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2009年第40卷第7期共收录45篇 7. Accession number: 20093312251354
Title: Design and experiment of 1QL-70 bed former for permanent raised beds
Authors: He, Jin1 ; Li, Hongwen1 ; Zhang, Xuemin1 ; Li, Wenying1 ; Zhang, Xirui1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Li, H. (lhwen@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 55-60
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Focusing on the problem of lacking suitable bed former for permanent raised beds (PRB) in one crop a year oasis agricultural region of northwest China, 1QL-70 bed former for PRB was designed, and the parameters of key components were analyzed and confirmed for bed-forming plough, combined forming-pressing device etc. Through adopting cultivated-type plough, the new bed-former could plough and smash the soil effectively. Combining with cylinder roller, the combined forming-pressing device could not only form the bed shape, but also press the beds effectively. Experiment results showed that the bed former was effective in forming and renovating the beds. Bed dimension and surface evenness after forming and renovating could meet the requirements of the agronomy in Hexi Corridor.
Number of references: 12
Main heading: Pressing (forming)
Controlled terms: Agricultural machinery - Agriculture - Experiments
Uncontrolled terms: Bed dimension - Bed former - Bed renovation - Cylinder rollers - Hexi corridor - Key component - NorthWest China - Permanent raised beds - Raised beds - Surface evenness
Classification code: 535.2.2 Metal Forming Practice - 812.3 Glass - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 23. Accession number: 20093312251374
Title: Optimization corn steep liquor-molasses fermentation medium for nisin
Authors: Lu, Jiahui1 ; Sun, Ying1 ; Jiang, Liyan1 ; Meng, Qingfan1 ; Li, Yang1 ; Teng, Lirong1
Author affiliation: 1 College of Life Science, Jilin University, Changchun 130012, China
Corresponding author: Teng, L. (tenglr@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 158-162
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: This work reviewed fermentation medium culture of nisin by single factor experiment. The results indicate that nisin activity was mainly influenced of molasses, corn steep liquor, K2HPO4 and MgSO4. Box-Behnken design and response surface analysis methods were applied to confirm optimum concentration of mainly effect factor. The results show that the optimum medium culture was corn steep liquor 233 g/L, molasses 27 g/L, K2HPO4 5 g/L, MgSO4 0.1 g/L. Under those conditions, nisin activity is 2491.8 IU/mL, which is in consistent with predicted value 2511.1 IU/mL.
Number of references: 14
Main heading: Surface analysis
Controlled terms: Antibiotics - Fermentation - Molasses - Surface properties
Uncontrolled terms: Box-Behnken design - Corn steep liquor - Effect factors - Fermentation medium - Nisin - Optimum concentration - Response surface analysis methods - Response surface methodology
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 822.3 Food Products - 805.1.1 Biochemical Engineering - 804.1 Organic Compounds - 951 Materials Science - 802.2 Chemical Reactions - 461.8 Biotechnology - 461.6 Medicine and Pharmacology - 423 Non Mechanical Properties and Tests of Building Materials - 801.2 Biochemistry
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 34. Accession number: 20093312251367
Title: Discriminant analysis of meat and bone meal content in ruminant feed based on NIRS
Authors: Yang, Zengling1 ; Han, Lujia1 ; Li, Qiongfei2 ; Fan, Xia3 ; Su, Xiaoou3
Author affiliation: 1 State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100091, China
2 School of Information Management, Shanghai Finance University, Shanghai 201209, China
3 Institute of Quality and Standards for Agri-product, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author: Han, L. (hanlj@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 124-128 142
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Representative ruminant concentrate supplement and MBM samples were collected, and 235 calibration samples and 152 external validation samples were prepared. The spectra were scanned from 400-2498 nm. The effect of spectrum pretreatment methods and spectrum region on the calibration results was considered. The calibration equations were established by SIMCA (soft independent modeling of class analogies) and DPLS (discriminant partial least squares) respectively. For external validation set, the accurate discriminant rate of SIMCA method was 96.1%, and the accurate discriminant rate of DPLS method was 100%. Comparing with NIRS quantitative analysis model of MBM in ruminant concentrate supplement, NIRS discriminant analysis model can detect if ruminant concentrate supplement was adulterated with MBM or not.
Number of references: 13
Main heading: Spectrum analysis
Controlled terms: Animals - Bone - Calibration - Discriminant analysis - Infrared devices - Infrared spectroscopy - Infrared transmission - Near infrared spectroscopy - Reflection
Uncontrolled terms: Calibration equations - Calibration samples - Discriminant analysis model - Discriminant partial least squares - Meat and bone meal - Near infrared reflectance spectroscopy - Pretreatment methods - Quantitative analysis model - Ruminant animal feed - Ruminant feeds - Soft independent modeling of class analogies
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 903.1 Information Sources and Analysis - 921 Mathematics - 922 Statistical Methods - 922.2 Mathematical Statistics - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 941 Acoustical and Optical Measuring Instruments - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 902.2 Codes and Standards - 461 Bioengineering and Biology - 461.2 Biological Materials and Tissue Engineering - 471 Marine Science and Oceanography - 711 Electromagnetic Waves - 822 Food Technology - 741.1 Light/Optics - 801 Chemistry - 814 Leather and Tanning - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 741.3 Optical Devices and Systems
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 35. Accession number: 20093312251344
Title: Hardware-in-the-loop simulation system for electronic control unit of continuously variable transmission
Authors: Li, Xincheng1 ; Fan, Guangqiang1 ; Zhu, Weixing2 ; Zhang, Yong3
Author affiliation: 1 Mechanical Engineering School, Jiangsu University, Zhenjiang 212013, China
2 Electric Information Engineering School, Jiangsu University, Zhenjiang 212013, China
3 Research Institute, Nanjing Automobile Group Company, Nanjing 210028, China
Corresponding author: Li, X. (lixincheng@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 6-9 50
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The hardware-in-the-loop simulation (HILS) system for continuously variable transmission (CVT) was developed for the study and development of electronic control unit (TCU) for CVT, and the construction and principle of the HILS system as well as control algorithm of TCU was described detailedly. The simulation system was used to carry out HILS experiment for TCU, and real vehicle test was carried out for simulation tested and optimized TCU. The results all indicate that the developed HILS system can provide real-time verification and optimal control to automotive integrated model and control algorithm of TCU, and a good simulation and test platform was provided for the development of TCU of CVT.
Number of references: 6
Main heading: Optimal control systems
Controlled terms: Algorithms - Industrial electronics - Light transmission - Power electronics - Proportional control systems - Remote control - Servomechanisms - Synthetic apertures - Variable speed transmissions
Uncontrolled terms: Continuously variable transmission - Control algorithms - Electronic control unit - Electronic control units - Hardware-in-the-loop simulation - Integrated models - Optimal controls - PID-control - Real vehicles - Simulation systems - Simulation tested - Test platforms
Classification code: 921.5 Optimization Techniques - 716.2 Radar Systems and Equipment - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 732.1 Control Equipment - 741.1 Light/Optics - 921 Mathematics - 716 Telecommunication; Radar, Radio and Television - 715 Electronic Equipment, General Purpose and Industrial - 714 Electronic Components and Tubes - 713.5 Other Electronic Circuits - 705 Electric Generators and Motors - 602.2 Mechanical Transmissions - 715.2 Industrial Electronic Equipment
Database: Compendex
47. Accession number: 20093312251356
Title: Improved double-foil shield for reducing spray drift
Authors: Zhang, Jing1 ; Yang, Xueling1 ; He, Xiongkui2 ; Song, Jianli2
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 College of Science, China Agricultural University, Beijing 100083, China
Corresponding author: Zhang, J. (yaodan0515@yahoo.com.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 67-71
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The flow field and droplets trajectory of the existing double-foil shield was analyzed by computational fluid dynamics software Fluent and improved scheme was put forward. Contrast experiment on flow field, droplets trajectory and droplet rate with shield before improvement and conventional spraying was carried out in simulative experiment and wind tunnel. The simulation experiment results indicate that improved double-foil shield was good for droplets to deposit and provided a deposit of 76.88% with the wind speed 3 m/s, more than that before improvement which was 63.26% and conventional spraying was 50.16%. The wind tunnel experiment results indicate that improved double-foil shield provided a deposit of 73.35% with the wind speed 3 m/s, more than that before improvement which was 66.90% and conventional spraying was 49.95%.
Number of references: 18
Main heading: Experiments
Controlled terms: Aerodynamics - Computational fluid dynamics - Deposits - Drop formation - Flow fields - Tunnels - Wind effects - Wind tunnels
Uncontrolled terms: Computational Fluid Dynamics software - Contrast experiment - Double-foil shield - Drift reduction - Droplet - Droplets trajectories - Improved scheme - On flow - Simulation - Simulation experiments - Spray drift - Wind speed - Wind tunnel experiment
Classification code: 651.1 Aerodynamics, General - 651.2 Wind Tunnels - 723.5 Computer Applications - 631.1.2 Gas Dynamics - 901.3 Engineering Research - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 921.6 Numerical Methods - 631.1.1 Liquid Dynamics - 408.1 Structural Design, General - 422.1 Test Equipment - 443.1 Atmospheric Properties - 401.2 Tunnels and Tunneling - 532 Metallurgical Furnaces - 617 Turbines and Steam Turbines - 631.1 Fluid Flow, General - 612 Engines
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 48. Accession number: 20093312251358
Title: Simulation analysis on air current field of pneumatic precision metering device for rapeseed
Authors: Liao, Qingxi1 ; Li, Jibo1 ; Qin, Guoliang1
Author affiliation: 1 College of Engineering and Technology, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author: Liao, Q. (liaoqx@mail.hzau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 78-82
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Metering device capability directly influences the performance of rapeseed planter. In order to define the mechanical structure parameters and the movement of air current in the pneumatic precision metering device, simulation research was respectively made on air current under positive and negative pressure with orthogonal method and ANSYS/CFX tools, and the research result was also validated by the experiment. The research shows that the quantity of holes in metering device disc is the pivotal factor of influencing the air current and seeding quality. When the quantity of hole is 25 and the pressure of hole in negative pressing area is -754 Pa, the seeding eligible index is 94.2%.
Number of references: 14
Main heading: Pneumatics
Controlled terms: Research
Uncontrolled terms: Air current field - ANSYS/CFX - Metering - Rapeseed - Simulation
Classification code: 632.3 Pneumatics - 901.3 Engineering Research
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 49. Accession number: 20093312251373
Title: Optimization of xylanase production by Streptomyces F0107 under submerged fermentation
Authors: Li, Xiuting1 ; She, Yuanli1 ; Sun, Yun2 ; Lu, Yuegang1 ; Ma, Jiajin1 ; Song, Huanlu1
Author affiliation: 1 College of Chemistry and Environmental Engineering, Beijing Technology and Business University, Beijing 100048, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Li, X. (lixt@th.btbu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 153-157 186
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Fermentation conditions of xylanase production by Streptomyces F0107 were optimized. More than 80 actinomycetes obtained by isolating from dozens of decaying wood, debris and soil samples of different parts of China with corncob xylan as the sole carbon source, all degraded xylan and produced evident xylan hydrolyzed circles. Xylanase production by a newly isolated Streptomyces strain F0107 was studied by using submerged fermentation under shaking. Production of xylanase by F0107 on corncobs xylan was enhanced by optimizing the carbon source, nitrogen source, initial pH value of the culture medium, rotation rate and temperature. The results of single-factor experiment showed that insoluble corncob xylan was the best carbon source, a combination of yeast extract and peptone was the best nitrogen source, and the optimal initial pH value was 5.0. The optimal cultivation temperature and rotation rate were 32°C and 140 r/min, respectively. The maximum increase in xylanase production (41%) was observed in the presence of Tween 80 at a concentration of 0.4%. After optimization of various production parameters, the maximum xylanase yield (332.17 U/mL) was obtained with no carboxymethy cellulase activity in 8 days of cultivation. In addition, SDS-PAGE and zymography analysis of culture supernatant under denaturing conditions revealed the presence of two xylanases with the molecular mass of approximately 38.9 ku and 24.4 ku, respectively.
Number of references: 18
Main heading: Optimization
Controlled terms: Debris - Diffusers (optical) - Fermentation - pH effects - Rotation
Uncontrolled terms: Carbon source - Cellulase activity - Concentration of - Corncob xylan - Culture medium - Culture supernatant - Decaying wood - Denaturing conditions - Initial pH value - Nitrogen sources - Production parameters - Rotation rate - SDS-PAGE - Soil sample - Sole carbon source - Streptomyces - Submerged fermentation - Tween 80 - Xylanase - Xylanases - Yeast extracts - Zymography
Classification code: 931.1 Mechanics - 921.5 Optimization Techniques - 821.5 Agricultural Wastes - 805.1.1 Biochemical Engineering - 802.2 Chemical Reactions - 801.2 Biochemistry - 801.1 Chemistry, General - 741.3 Optical Devices and Systems - 601.1 Mechanical Devices - 461.8 Biotechnology - 452.3 Industrial Wastes
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 64. Accession number: 20093312251363
Title: Heat balance analysis of ceramic ball heat carrier and biomass powder
Authors: Li, Zhihe1 ; Yi, Weiming1 ; Liu, Huanwei1
Author affiliation: 1 School of Light Industry and Agricultural Engineering, Shandong University of Technology, Zibo 255091, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 103-106 97
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to investigate the heat exchange principle between the ceramic balls heat carrier and biomass powder, heat exchange experiments were conducted with ceramic balls of 90°C at 1.0, 1.2 and 1.4 kg/min and biomass powder of ambient temperature in a vertical down tube heat transfer reactor. The percentages of heat conduction and heat convection of the total endothermic flux of the biomass powder were determined at different ceramic balls mass flow by heat balance analytic method. The results indicate that the heat conduction was the dominant heat transfer mechanism which reached 61%-87% during the heat exchange between the solid heat carrier and biomass powder. The heat conduction ratio decreased distinctly and the heat convection increased over 19% when the ceramic balls mass flow increased from 1.0 kg/min to 1.4 kg/min.
Number of references: 11
Main heading: Spheres
Controlled terms: Biomass - Ceramic materials - Heat conduction - Heat convection - Heat exchangers - Mass transfer - Powders - Specific heat
Uncontrolled terms: Ambient temperatures - Analytic method - Ceramic ball - Ceramic balls - Heat balance - Heat balance analysis - Heat carriers - Heat exchange - Heat transfer mechanism - Mass flow - Vertical down
Classification code: 821.5 Agricultural Wastes - 812.1 Ceramics - 805.1.1 Biochemical Engineering - 804 Chemical Products Generally - 641.3 Mass Transfer - 641.2 Heat Transfer - 641.1 Thermodynamics - 631 Fluid Flow - 616.1 Heat Exchange Equipment and Components - 536 Powder Metallurgy - 525.1 Energy Resources and Renewable Energy Issues
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 75. Accession number: 20093312251377
Title: Identifying the navigation route based on TMS320DM642 for agriculture visual robot
Authors: Cao, Qian1 ; Wang, Ku1 ; Yang, Yonghui1 ; Shi, Xiaolei1
Author affiliation: 1 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Wang, K. (wang_ku@263.net)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 171-175
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In the farmland non-structurization natural environment, navigation route's extraction algorithm was studied based on machine vision. The distance and angle between camera and navigation route was gained by the perspective projection. The algorithm was successfully transplanted to TMS320DM642 hardware platform, and optimized on a C programming language level. In the examination, it shows that the biggest error of deviation angle between camera and navigation route is 2° and the biggest deviation distance between camera and navigation route is 5 cm.
Number of references: 16
Main heading: Routing algorithms
Controlled terms: Agriculture - C (programming language) - Cameras - Computer vision - Digital signal processors - Navigation - Robots - Sulfur compounds
Uncontrolled terms: C programming languages - Deviation angles - DSP - Extraction algorithms - Hardware platform - Natural environments - On-machines - Perspective projections - Self-orientation - Structurization - Visual navigation
Classification code: 731.5 Robotics - 731.6 Robot Applications - 741.2 Vision - 723.5 Computer Applications - 742.2 Photographic Equipment - 804.2 Inorganic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 804.1 Organic Compounds - 723.2 Data Processing and Image Processing - 434.4 Waterway Navigation - 655.1 Spacecraft, General - 716.1 Information Theory and Signal Processing - 431.5 Air Navigation and Traffic Control - 716.3 Radio Systems and Equipment - 723 Computer Software, Data Handling and Applications - 723.1.1 Computer Programming Languages - 722.4 Digital Computers and Systems
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 76. Accession number: 20093312251364
Title: Improved design and experiment of heat transfer platform for a down-flow tube
Authors: Yuan, Tingbi1 ; Yi, Weiming1 ; Li, Zhihe1 ; Yin, Zhe1 ; Liu, Huanwei2 ; Tian, Zhongjun1
Author affiliation: 1 School of Light Industry and Agricultural Engineering, Shandong University of Technology, Zibo 255091, China
2 School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
Corresponding author: Yi, W. (yiweiming@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 107-111
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The down-flow tube reactor was used for biomass pyrolysis liquefaction and proved effective. In order to study the characteristics of heat transfer between ceramic balls and biomass chars, an improved experimental platform of down-flow tube was designed based on the former research. In addition, the former experimental material biomass particles were replaced by chars, and the result of experiment would be indicative to the industry application. Based on the heat exchange experiment among the ceramic balls at different temperature (50, 60, 70°C) and the air at room temperature, by the analysis of thermal equilibrium, the convective heat exchange coefficient between ceramic balls and the air was worked out and the value was about 600 W/(m2·K). The result of heat transfer experiment between ceramic balls and chars shows that temperature in the vertical tube obeys linear rule as the edge effect is not considerd. The leading way of heat transfer in the down-flow tube is the convective heat exchange.
Number of references: 8
Main heading: Experiments
Controlled terms: Biomass - Ceramic materials - Feeding - Heat exchangers - Heat transfer - Industrial applications - Pyrolysis - Spheres - Tubes (components)
Uncontrolled terms: Biomass char - Biomass Particle - Biomass pyrolysis - Ceramic balls - Chars - Convective heat - Down-flow tube - Edge effect - Experimental materials - Experimental platform - Feeder - Flow tube - Flow tube reactor - Heat exchange - Industry applications - Linear rule - Room temperature - Thermal equilibriums - Vertical tube
Classification code: 913 Production Planning and Control; Manufacturing - 802.2 Chemical Reactions - 805.1.1 Biochemical Engineering - 812.1 Ceramics - 821.5 Agricultural Wastes - 901.3 Engineering Research - 901.4 Impact of Technology on Society - 691.2 Materials Handling Methods - 631 Fluid Flow - 619.1 Pipe, Piping and Pipelines - 616.1 Heat Exchange Equipment and Components - 525.1 Energy Resources and Renewable Energy Issues - 511.2 Oil Field Equipment - 641.2 Heat Transfer
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 77. Accession number: 20093312251359
Title: Fuzzy control system of combine cylinder based on FPGA
Authors: Ni, Jun1 ; Mao, Hanping1 ; Cheng, Xiuhua1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Ni, J. (nijun1218@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 83-87 92
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A design method of fuzzy control system of combine cylinder based on VHDL and FPGA was proposed. With the fuzzy logic toolbox of Matlab, the fuzzy inference rules and the algorithm architecture of cylinder were constructed. According to top-down mode, the VHDL modular design of the controller was carried out. Time simulation and function simulation of the fuzzy controller were proceeding on MAX PLUSII, and the design was realized. The results indicate that FPGA implementation of fuzzy control about combine cylinder has many advantages, such as timing test is convenient, inference speed is high, design modification is agile, and system integration is great. It is an efficient method to implement intelligent control strategy.
Number of references: 11
Main heading: Fuzzy control
Controlled terms: Controllers - Cylinders (shapes) - Design - Field programmable gate arrays (FPGA) - Fuzzy inference - Fuzzy systems - MATLAB
Uncontrolled terms: Algorithm architectures - Cylinder - Design method - Design modifications - Efficient method - FPGA - FPGA implementations - Function simulation - Fuzzy controllers - Fuzzy inference rules - Fuzzy logic toolbox of MATLAB - Modular designs - System integration - Time simulations - Topdown - VHDL
Classification code: 723.5 Computer Applications - 731 Automatic Control Principles and Applications - 731.1 Control Systems - 961 Systems Science - 732.1 Control Equipment - 921 Mathematics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 902.1 Engineering Graphics - 723.4.1 Expert Systems - 723.4 Artificial Intelligence - 408 Structural Design - 408.2 Structural Members and Shapes - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 721.2 Logic Elements - 721.3 Computer Circuits - 723.1.1 Computer Programming Languages
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 90. Accession number: 20093312251386
Title: Simulation of 3-axis milling based on solid model and instantaneous force
Authors: Zhu, Hu1 ; Lee, KunWoo2
Author affiliation: 1 College of Mechanical and Electrical Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang 110136, China
2 School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151742, Korea, Republic of
Corresponding author: Zhu, H. (zhuhu100@yahoo.com.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 222-226
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: By introducing the concept of surface generation points, an instantaneous force based tool deformation calculation method and the solid modeling method of deformed tool swept volume were proposed, and the solid model of machining simulation including geometry and physical errors were generated. The machining process was shown by computer graphics dynamically and the measurement method for solid model of machining simulation was also presented. The whole system was implemented by using OpenGL and PARASOLID modeling kernel. The result of machining simulations case study and the actual machining experiments indicate that the maximum and minimum simulation errors were 0.012 mm and 0.004 mm respectively, and the average error was 0.008 mm.
Number of references: 9
Main heading: Simulators
Controlled terms: Computer graphics - Errors - Machine tool attachments - Machining - Surface chemistry
Uncontrolled terms: Average errors - Deformation calculation - Instantaneous force - Machining experiments - Machining Process - Machining simulation - Measurement methods - NC machining simulation - Simulation error - Solid model - Solid-modeling - Surface generations - Swept volume - Whole systems
Classification code: 922.2 Mathematical Statistics - 671 Naval Architecture - 723.5 Computer Applications - 731 Automatic Control Principles and Applications - 801.4 Physical Chemistry - 921 Mathematics - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 662.1 Automobiles - 655.2 Satellites - 654.1 Rockets and Missiles - 621 Nuclear Reactors - 604.2 Machining Operations - 603.2 Machine Tool Accessories - 657.1 Solar Energy and Phenomena
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 105. Accession number: 20093312251345
Title: Forward modeling and simulation on vehicle equipped with CVT
Authors: Qian, Lijun1 ; Xu, Fei1
Author affiliation: 1 School of Machinery and Automobile Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author: Qian, L. (hfutqlj@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 10-14
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Forward simulation approach can simulate vehicle with accuracy according to actual situations. With this method, simulation on CVT vehicle is conducted to get performance evaluation. By analysis of simulation results, and by adjustment of performance parameters, the credibility and accuracy of simulation are increased, the design of control strategy is realized, and the design period and cost are reduced. Comparing with the road test report, the simulation gives good predictions for the CVT vehicle.
Number of references: 9
Main heading: Vehicle transmissions
Controlled terms: Light transmission - Variable speed transmissions - Vehicles
Uncontrolled terms: Continuously variable transmission - Control strategies - Design period - Forward modeling - Forward simulation - Performance evaluation - Performance parameters - Road tests - Simulation result
Classification code: 432 Highway Transportation - 602.2 Mechanical Transmissions - 741.1 Light/Optics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 120. Accession number: 20093312251346
Title: Parametric torque converter dynamic model with variable shock loss coefficient
Authors: Li, Xiaotian1 ; Wang, Anlin1 ; Ci, Jian1
Author affiliation: 1 College of Mechanical Engineering, Tongji University, Shanghai 201804, China
Corresponding author: Li, X. (xiaotian3881@hotmail.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 15-19
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to overcome the prediction error of classic torque converter model which caused by inaccurate shock loss prediction, a torque converter dynamic model with variable shock loss coefficient was developed. Using bond graph method, the model analyzes working wheel's performance and energy losses to construct model formulas by geometry parameters, and variable shock loss coefficient method was used to improve model's accuracy. Test result shows classic constant coefficient method's percent error can reach to 15%-60% in speed ratio range between 0 and 1, but the result of variable shock loss coefficient is less than 10% in all conditions, which is better than that with classic constant coefficient method.
Number of references: 9
Main heading: Torque converters
Controlled terms: Cascades (fluid mechanics) - Dynamic models - Energy dissipation - Graph theory - Hydraulic torque converters - Structures (built objects) - Torque
Uncontrolled terms: Bond graph - Bond graph method - Constant coefficients - Construct models - Dimensionless performance - Energy loss - Geometry parameter - Prediction errors - Shock loss - Speed ratio - Test results - Variable shock loss coefficient
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory - 921 Mathematics - 662.4 Automobile and Smaller Vehicle Components - 632.2 Hydraulic Equipment and Machinery - 631.1 Fluid Flow, General - 602.1 Mechanical Drives - 602 Mechanical Drives and Transmissions - 525.4 Energy Losses (industrial and residential) - 421 Strength of Building Materials; Mechanical Properties - 408 Structural Design
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 136. Accession number: 20093312251366
Title: Simulation analysis of 3-D flow field within gas replacement devices of modified atmosphere packaging machine with trays
Authors: Lu, Lixin1 ; Wang, Jie1
Author affiliation: 1 Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China
Corresponding author: Lu, L. (lulx@jiangnan.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 119-123
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The gas replacement device is the key part of the modified atmosphere packaging machine. The structures of two typical kinds of gas replacement devices with trays were analyzed. The mathematical model of 3-D turbulent gas flow field within the tray was proposed, and then the numerical simulation of the gas-flow field was conducted by means of the Fluent software. The distributions of the flow field within trays for two kinds of gas replacement devices were obtained. The evaluation indexes of the flow field for ensuring the quality of gas replacement within tray were established. Effect of the arrangement mode of gas inlet and outlet on properties of gas replacement was analyzed. The results show that, compared to the typical traditional structure, the new gas replacement devices has better performance in replacement ratio of gas, static pressure distribution, average velocity of flow, and gas consumption.
Number of references: 12
Main heading: Gases
Controlled terms: Computer simulation languages - Computer software - Flow fields - Flow of gases - Flow simulation - Mathematical models - Packaging machines - Three dimensional
Uncontrolled terms: 3-D flow field - Average velocity - Evaluation index - FLUENT software - Gas consumption - Gas flow field - Gas flows - Gas inlet - Key parts - Modified atmosphere packaging - Numerical simulation - Replacement ratio - Simulation analysis - Static pressure distributions
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 921 Mathematics - 902.1 Engineering Graphics - 723.5 Computer Applications - 723.1.1 Computer Programming Languages - 723 Computer Software, Data Handling and Applications - 694.3 Packaging Equipment - 631.1.2 Gas Dynamics - 631.1 Fluid Flow, General
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 137. Accession number: 20093312251355
Title: Sprayer-cultivator-combined weeder for permanent raised bed system
Authors: Hu, Yaxian1 ; Wang, Xiaoyan1 ; Li, Hongwen1 ; He, Jin1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Wang, X. (xywang@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 61-66
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To control the problems of weeds which are frequently and massively occurring under permanent raised bed (PRB) system in Hexi Corridor, a sprayer-and-cultivator-combined multifunctional weeder was designed with the compound configurations of chemical sprayer and mechanical cultivator which were set up on a three-section foldable frame and could be applied alternatively or mutually as to the specific requirement. Three pieces of foldable shields were installed to reduce the drift of the chemicals. As most of the weeds are perennial in the area and can hardly be eliminated by chemical spraying, and also some annual weeds can not be simply cut off by mechanical cultivator, this sprayer-cultivator-combined weeder could function as a manner of integrated weed control along the whole growing period of wheat and maize. Field experiments show that the chemical and mechanical combined treatment managed a significantly better weed-control performance (97.3%) which was higher than either spraying treatment (94.6%) or cultivating treatment (89.2%). That means under permanent raised bed system chemical sprayer and mechanical cultivator combined mode is the optimum pattern to get effective weeds control.
Number of references: 13
Main heading: Weed control
Controlled terms: Agricultural machinery - Cultivation
Uncontrolled terms: Anti-drift shields - Chemical spraying - Combined treatment - Control performance - Cut-off - Field experiment - Growing period - Hexi corridor - Mechanical cultivator - Permanent raised bed - Weeder
Classification code: 821.3 Agricultural Methods - 821.2 Agricultural Chemicals - 821.1 Agricultural Machinery and Equipment - 803 Chemical Agents and Basic Industrial Chemicals - 681.1 Railway Plant and Structures, General - 407.2 Waterways - 406.2 Roads and Streets
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 138. Accession number: 20093312251385
Title: Modeling and mechanism of anodic smoothing of pulse electrochemical finishing
Authors: Ma, Ning1 ; Xu, Wenji1 ; Wang, Xuyue1 ; Pang, Guibing2 ; Tao, Bin1
Author affiliation: 1 Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, China
2 College of Mechanical Engineering and Automation, Dalian Polytechnic University, Dalian 116034, China
Corresponding author: Xu, W. (wenjixu@dlut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 217-221
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The surface of the bearing inner raceway was finished by pulse electrochemical finishing (PECF). A mathematical model was developed and the effects of finishing parameters, such as the interelectrode gap, current density and the finishing time, on the anodic smoothing was analyzed. The results show that predictive results based on the developed mathematical model are in good agreement with the experimental results. The developed model can not only explain the mechanism of anodic smoothing, but also be used as a guideline for accurately choosing finishing parameters.
Number of references: 9
Main heading: Mathematical models
Controlled terms: Computer simulation - Experiments - Metal finishing
Uncontrolled terms: Developed model - Finishing time - Interelectrode gaps - Pulse electrochemical finishing
Classification code: 604.2 Machining Operations - 723.5 Computer Applications - 901.3 Engineering Research - 921 Mathematics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 139. Accession number: 20093312251369
Title: Apple surface damage and inner decay detection based on laser scattering image analysis
Authors: Chen, Yuyan1 ; Tu, Kang1 ; Chai, Liyue1 ; Pan, Leiqing1
Author affiliation: 1 College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
Corresponding author: Tu, K. (KangTu@njau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 133-137
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The semiconductor laser beam and computer vision technology were used to monitor the surface damage and inner decay of apples (c.v. gala). In the experiments, the damage was produced by falling of a spherical steel ball (diameter: 16 mm, weight: 96 g) on the apples from a height of 20 cm, to simulate the damage caused during the picking and transportation. In order to simulate the inner decay, 15 μL suspensions at 105/mL conidia of Penicillium expansum was injected into the inner of the apples by a micro-injection. The laser scattering image analysis indicates that the number of the pixels of the images (S3) reached the maximum (3964) after 36 hours after damaged, and had significant differences with the control group during 84 hours after damaged (P&le0.05). After injecting the suspensions, the number of the pixels of S3 reached the maximum (3682) on the 4th day, and showed significant differences with the control group on the 7th day (P&le0.05). This trial laid a theoretical basis for applying low power laser beam to monitor the surface damage and inner decay of apples.
Number of references: 16
Main heading: Semiconductor lasers
Controlled terms: Computer vision - Damage detection - Decay (organic) - Fruits - Image analysis - Laser beams - Lasers - Pixels
Uncontrolled terms: Apple - Computer vision technology - Control groups - Inner decay - Laser scattering - Low power laser beams - Micro-injection - Penicillium expansum - Steel balls - Surface damage - Surface damages - Theoretical basis
Classification code: 821.4 Agricultural Products - 741.2 Vision - 742.2 Photographic Equipment - 744.1 Lasers, General - 744.4.1 Semiconductor Lasers - 744.8 Laser Beam Interactions - 801.2 Biochemistry - 802.2 Chemical Reactions - 811.2 Wood and Wood Products - 741 Light, Optics and Optical Devices - 421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 712.1 Semiconducting Materials - 731.6 Robot Applications - 714.2 Semiconductor Devices and Integrated Circuits - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 722.2 Computer Peripheral Equipment
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 151. Accession number: 20093312251351
Title: Path iterative learning of inertial guided AGV with magnets correction
Authors: Zhu, Congmin1, 2 ; Huang, Yumei1 ; Ma, Binliang1 ; Xiao, Jie1
Author affiliation: 1 Faculty of Mechanical and Precision Instrumental Engineering, Xi'an University of Technology, Xi'an 710048, China
2 Institute of Construction Engineering of General Logistic Department of PLA, Xi'an 710032, China
Corresponding author: Zhu, C. (zcm8901111@hotmail.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 40-44
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Pairs of magnets were installed in the path at certain interval and were detected by a magnetic ruler to correct accumulation error of position and orientation of inertial guided AGV. It was difficult to get the absolute position of magnets because of obstacles in job shop and this often caused trouble in debugging AGV. A teach-in method was used to record the position of magnets, and iterative learning control was introduced to update the aim point of AGV. After several times' learning, AGV can run through magnets accurately. This method is easy to use in AGV path tracking. Accumulation of error can be eliminated when correction is done. The results of experiments in a tricycle AGV tugger were given to demonstrate the efficiency.
Number of references: 11
Main heading: Magnets
Controlled terms: Education - Error correction - Inertial navigation systems - Learning algorithms - Learning systems
Uncontrolled terms: Absolute position - Accumulation errors - AGV - Aim point - Inertial guidance - Iterative learning - Iterative learning control - Job shop - Path tracking
Classification code: 731.5 Robotics - 723.5 Computer Applications - 723.4 Artificial Intelligence - 723 Computer Software, Data Handling and Applications - 901.2 Education - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 704 Electric Components and Equipment - 461.4 Ergonomics and Human Factors Engineering - 431.5 Air Navigation and Traffic Control - 708.4 Magnetic Materials
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 152. Accession number: 20093312251370
Title: Plasticity model for pressing of sunflower seeds
Authors: Zhang, Yaxin1 ; Zheng, Xiao1 ; Lin, Guoxiang1
Author affiliation: 1 School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
Corresponding author: Zheng, X. (zhengxiao@whpu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 138-142
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The experiments for stress-strain and lateral pressure of sunflower seeds by uniaxial pressing were carried out. The results show that sunflower seeds conform to the model of three power curve. By using of Kuhn's yield criterion, plasticity constitutive equations were developed. Sunflower seed strain of theoretical and experimental value of the actual value of the maximum relative error is 19.7%, with an average error of 5.3%. The constitutive model can show a better description of sunflower seeds in the press process of plastic deformation. Kuhn's yield criterion can be used as theoretical basis for plasticity model of sunflower seeds.
Number of references: 8
Main heading: Constitutive equations
Controlled terms: Plasticity - Seed
Uncontrolled terms: Average errors - Experimental values - Lateral pressures - Maximum relative errors - Plasticity model - Power curves - Press process - Pressing - Stress-strain - Sunflower seeds - Theoretical basis - Uni-axial pressing - Yield criteria - Yield criterion
Classification code: 408 Structural Design - 821.4 Agricultural Products - 921 Mathematics - 951 Materials Science
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 171. Accession number: 20093312251379
Title: Expert system based on WebGIS for forecast and prediction of agricultural pests
Authors: Liu, Minghui1 ; Shen, Zuorui1 ; Gao, Lingwang1 ; Zhang, Yuejin2 ; Wang, Jianqiang2 ; Jiang, Yuying2
Author affiliation: 1 College of Agro-Biotechnology, China Agricultural University, Beijing 100193, China
2 National Agro-Tech Extension and Service Center, Beijing 100026, China
Corresponding author: Gao, L. (lwgao@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 180-186
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Based on the MapGuide module of WebGIS and. net technology, the expert system for prediction and forecast of agricultural pests on the Web was designed and developed. The pest categories were bio-regionalized in the system. The experts' knowledge, abstracted from their experiences and including the description of the knowledge, the critical values for the description, terms for distinguishes, and the grade of pests harm, formed a Web model and was stored in tables supported by SQL Server 2000. Expert-knowledge-based forward reasoning and case-based reasoning (CBR) were employed in the inference engine. Users can provide the necessary field-monitoring data to the system with the wizard and the guide of hint in the interface, and can get the potential grade of pests harm in GIS thematic map, chart and text. The demonstrations show that the system is easy to use and the prediction is accurate and intuitive.
Number of references: 16
Main heading: Case based reasoning
Controlled terms: Expert systems - Forecasting - Maps
Uncontrolled terms: Agricultural pests - Critical value - Forward reasoning - NET technology - Prediction and forecast - SQL server 2000 - Web models - WebGIS
Classification code: 921 Mathematics - 912.2 Management - 903.1 Information Sources and Analysis - 922.2 Mathematical Statistics - 902.1 Engineering Graphics - 723.4 Artificial Intelligence - 405.3 Surveying - 723.4.1 Expert Systems
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 189. Accession number: 20093312251349
Title: Numerical and experimental study on V-cone flowmeter for the vehicle exhaust gas flow measurement
Authors: Liu, Jun1 ; Xie, Wenlei1 ; Gao, Jianli1 ; Mu, Guizhi1 ; Liu, Zhiqiang1
Author affiliation: 1 School of Vehicle and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Liu, J. (liujun@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 29-34
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to accurately test the fuel consumption with carbon balance method, a series of characteristic studies were carried out on V-cone flowmeters for exhaust flow measurement. The Fluent was used to simulate the flow of V-cone flowmeter, and the influence of key factors on the permanent pressure loss and discharge coefficient such as different values of equivalent diameter ratio, fore-and-aft V-cone and Reynolds number etc. were studied. Then, two V-cone flowmeters were designed and comparison experiment with Venturi tubes was carried out. Finally, two fitting formulas which were deduced from the Venturi tubes' test were used as calculation models. The result of the experiment indicates that the simulation and the experiment have strong consistency and the flowmeters are of great accuracy and stability, and they can be used to measure the vehicle exhaust gas flow.
Number of references: 8
Main heading: Flow measurement
Controlled terms: Aerodynamics - Air pollution - Computer simulation - Computer simulation languages - Experiments - Flow of gases - Flow simulation - Flowmeters - Hydraulics - Nozzles - Reynolds number
Uncontrolled terms: Calculation models - Carbon balance method - Discharge coefficients - Equivalent diameter ratio - Exhaust flow measurement - Fitting formula - Key factors - Numerical and experimental study - Numerical simulation - Permanent pressure loss - Strong consistency - V-cone flowmeter - Vehicle exhausts - Venturi tube
Classification code: 943.2 Mechanical Variables Measurements - 943.1 Mechanical Instruments - 931.2 Physical Properties of Gases, Liquids and Solids - 901.3 Engineering Research - 723.5 Computer Applications - 723.1.1 Computer Programming Languages - 651.1 Aerodynamics, General - 632.1 Hydraulics - 631.1.2 Gas Dynamics - 631.1 Fluid Flow, General - 451 Air Pollution
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 190. Accession number: 20093312251352
Title: Optimization experiment of structure parameters of rototilling and stubble breaking universal blade
Authors: Jia, Honglei1 ; Ji, Wenfeng1 ; Han, Weifeng1 ; Tan, Hongjie2 ; Liu, Zhaochen2 ; Ma, Chenglin1
Author affiliation: 1 Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
2 Jilin Province Academy of Agricultural Machinery, Changchun 130022, China
Corresponding author: Jia, H. (jiahl@vip.163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 45-50
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Based on the L-type stubble breaking blade and the wide rototilling blade, nine kinds of universal blades were designed. The optimum structure parameters of the universal blade were determined through the power consumption (torque) test of a single blade in a soil bin. The main structure parameters of the universal blade were as follows: the bend angle was 67°, bending radius was 20 mm, sliding cutting angle of the frontal cutting edge was 12°, and the working width of a single blade was 60 mm. The rototilling contrast tests between the universal blade and national standard rototilling blade and stubble cutting contrast tests between the universal blade and the mass produced stubble breaking blade were conducted. The test results show that: the power consumption per unit working width of the universal blade was less than that of national standard rototilling blade, but more than that of the typical stubble breaking blade. When they had the same width, the universal blade power consumed was less than the national standard rototilling blade and the typical stubble breaking blade, which proved that it was reasonable and feasible to select the structure parameters of the universal blade.
Number of references: 10
Main heading: Structural optimization
Controlled terms: Bins - Electric power utilization - Soils - Standards - Testing
Uncontrolled terms: Bend angle - Bending radius - Cutting angles - Cutting edges - Main structure - National standard - Per unit - Power consumed - Power consumption - Structure parameter - Structure parameters - Stubble breaking universal blade - Test results
Classification code: 921.5 Optimization Techniques - 902.2 Codes and Standards - 706.1 Electric Power Systems - 694.4 Storage - 483.1 Soils and Soil Mechanics - 423.2 Test Methods - 422.2 Test Methods
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 191. Accession number: 20093312251350
Title: Sine wave replication control method on hydro-pneumatic suspension force loading system
Authors: Zhang, Hui1 ; He, Jingfeng1 ; Han, Junwei1
Author affiliation: 1 School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
Corresponding author: Zhang, H. (hitzhanghui@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 35-39 34
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A mathematic model of electro-hydraulic servo driving force control system for a hydro-pneumatic suspension was established. This paper analyzed the control method usually used in wave form reappeared. The fixed step phase and amplitude control method use ADALINE neural network based on Widrow-Hoff learning algorithm was emphatically introduced aiming at sine wave reappearing. This paper put forward phase and amplitude control improved method use relative quantity based on the analyses of the algorithm the convergence speed influencing factors. This learning algorithm and absolute amount control method were used to control a kind of hydro-pneumatic suspension force loading system model. The convergence rate, the relationship between convergence time and input signal's frequency and amplitude, the relationship between algorithm convergence value and input signal's frequency and amplitude was presented. Outcome shows that using the relative value as the input of the phase and amplitude control could improve the convergence speed and the reappeared precision of sine wave effectively. The phase and amplitude control can get better practical effect.
Number of references: 11
Main heading: Pneumatic control equipment
Controlled terms: Convergence of numerical methods - Electric converters - Hydraulic machinery - Learning algorithms - Learning systems - Model structures - Pneumatic control - Simulators - Suspensions (components)
Uncontrolled terms: Adaline neural network - Algorithm convergence - Control methods - Convergence rates - Convergence speed - Convergence time - Driving force control - Electrohydraulic servos - Hydro-pneumatic suspension - Improved methods - Influencing factor - Input signal - Load simulation test equipment - Loading system - Mathematic model - Phase and amplitude control - Relative value - Sine wave regained - Sine-wave - Wave forms - Widrow-Hoff learning algorithm
Classification code: 704.2 Electric Equipment - 705.3 Electric Motors - 723 Computer Software, Data Handling and Applications - 723.4 Artificial Intelligence - 671 Naval Architecture - 723.5 Computer Applications - 731.5 Robotics - 732.1 Control Equipment - 921.6 Numerical Methods - 731.1 Control Systems - 662.1 Automobiles - 461.4 Ergonomics and Human Factors Engineering - 601.2 Machine Components - 621 Nuclear Reactors - 632.2 Hydraulic Equipment and Machinery - 408 Structural Design - 632.3 Pneumatics - 654.1 Rockets and Missiles - 655.2 Satellites - 657.1 Solar Energy and Phenomena - 632.4 Pneumatic Equipment and Machinery
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 192. Accession number: 20093312251382
Title: Rapid variant design approach based on design template
Authors: Lu, Changming1, 2 ; Zhang, Libin1 ; Jiang, Jiandong1 ; Xu, Fang1 ; Zhang, Xian1
Author affiliation: 1 MOE Key Lab. of Mechanical Manufacture and Automation, Zhejiang University of Technology, Hangzhou 310014, China
2 Department of Mechanical Engineering, Zhejiang Institute of Mechanical and Electrical Engineering, Hangzhou 310053, China
Corresponding author: Lu, C. (luchangming@hz.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 197-202
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Problems such as complex variant process and the easiness of generating conflict of constraints existed in traditional variant design methodology. Aiming at the problem of the complexity of dependent relations among parts as well as configuration and variation in design process must be alternated and intervened by designer, a rapid variant design approach under design template frame was proposed. Taking advantage of flexibility and information carrier function of templates, concept of variable element was put forward. Rapid variation of artifacts was realized within definition domain of template through creation of interrelation among variable elements to relate parameters with each other. An example of gearbox of small agricultural machinery was used to verify that serialization through structural variation and diversification of product through changing the geometric parameters in same series.
Number of references: 9
Main heading: Product design
Controlled terms: Agricultural machinery
Uncontrolled terms: Definition domain - Design process - Design template - Design templates - Geometric parameter - Information carriers - Product family - Rapid variant design - Rapid variation - Structural variations - Variable element - Variant design
Classification code: 821.1 Agricultural Machinery and Equipment - 913.1 Production Engineering
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 208. Accession number: 20093312251360
Title: Performance test of short-rasp-bar of axial flow threshing and separating unit
Authors: Li, Yaoming1 ; Li, Hongchang1 ; Xu, Lizhang1 ; Zhao, Zhan1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Li, Y. (ymli@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 88-92
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to solve major problems of the high power consumption of threshing and separating of rice combine harvesters, more short trash in product, uneven distribution, and so on, a new threshing drum with short-rasp-bar tooth was developed, and then the experiments were conducted. The experimental results show that this new device has lower power consumption while threshing rice, less impurity contents and comparative uniform distribution, thus reducing the cleaning load effectively. Furthermore, by means of regression analysis, applying DPS software, the mathematical models of threshing and separating system-short-rasp-bar-plate-tooth drum were established with grid concave, including threshing and separating grain losses rate, power consumption and distribution of outlier along cylinder's axial direction. Lastly, a multi-objective optimization was applied on the system based on Matlab optimum toolbox, so as to get the comprehensively optimistic operating parameters.
Number of references: 12
Main heading: Mathematical models
Controlled terms: Agriculture - Axial flow - Bars (metal) - Combines - Computer simulation - Dentistry - Electric power utilization - Experiments - Harvesters - MATLAB - Multiobjective optimization - Regression analysis
Uncontrolled terms: Axial direction - Combine harvesters - High power consumption - Impurity content - Lower-power consumption - Multi-objective optimizations - New devices - Operating parameters - Performance tests - Power Consumption - Separating systems - Short-rasp-bar - System-based - Threshing and separating unit - Uniform distribution
Classification code: 922.2 Mathematical Statistics - 723.5 Computer Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research - 921 Mathematics - 921.5 Optimization Techniques - 723.1.1 Computer Programming Languages - 631.1 Fluid Flow, General - 535.1.2 Rolling Mill Practice - 462.3 Dental Equipment and Supplies - 461.6 Medicine and Pharmacology - 461.1 Biomedical Engineering - 706.1 Electric Power Systems
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 209. Accession number: 20093312251368
Title: Selection of NIR characteristic wavelength bands for soluble solids content in Nanfeng mandarin fruit
Authors: Sun, Xudong1 ; Zhang, Hailiang1 ; Ouyang, Aiguo1 ; Liu, Yande1
Author affiliation: 1 School of Mechatronics Engineering, East China Jiaotong University, Nanchang 330013, China
Corresponding author: Liu, Y. (jxliuyd@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 129-132
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In the wavelength range of 350-1800 nm, different pre-processing methods were developed to improve the predictive ability and robustness of model, but the effect was not better than interval partial least square (iPLS). The characteristic wavelength bands of 642-787 nm, 861-1006 nm, 1080-1152 nm and 1226-1371 nm were determined by iPLS characteristic wavelength bands selection method. The performance of the model calibrated with sensitive wavelength bands was predicted by 30 unknown Nanfeng mandarin fruits, the correlation coefficient and root mean square error for prediction (RMSEP) were 0.95 and 0.55° Birx respectively. It was suggested that near infrared spectroscopy (NIRS) combination with iPLS characteristic wavelength bands selection method was a powerful tool to improve the predictive ability and robustness of nondestructive measurement model.
Number of references: 12
Main heading: Infrared spectroscopy
Controlled terms: Fruits - Infrared devices - Near infrared spectroscopy - Spectroscopic analysis - Textiles - Wavelength
Uncontrolled terms: Characteristic wavelength bands - Correlation coefficient - Interval partial least square - Interval partial least-squares (iPLS) - Nanfeng mandarin fruit - Non-destructive measurement - Pre-processing method - Predictive abilities - Robustness of model - Root mean square errors - Selection methods - Sensitive wavelengths - Soluble solids content - Wavelength band - Wavelength ranges
Classification code: 941.4 Optical Variables Measurements - 931.3 Atomic and Molecular Physics - 931.2 Physical Properties of Gases, Liquids and Solids - 821.4 Agricultural Products - 819 Synthetic and Natural Fibers; Textile Technology - 801 Chemistry - 753.1 Ultrasonic Waves - 751.1 Acoustic Waves - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 711 Electromagnetic Waves
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
210. Accession number: 20093312251357
Title: Analysis on performance of an air-blowing vertical-rotor type precision seed-metering device
Authors: Sun, Yujing1 ; Ma, Chenglin1 ; Li, Meng2
Author affiliation: 1 Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
2 College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Corresponding author: Ma, C. (mcl@cc.jl.public.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 72-77 60
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Uniform design was used to test the soybean seeding performance of an air-blowing vertical-rotor type precision seed-metering device in laboratory. Based on test results, regression models of seeding performance were constructed by uniform design software UST 1.0. The effects of designing and operating parameters of air-blowing vertical rotor seeder on its performance were investigated. The results suggest that seeding performance is sensitive to air pressure and operating speed in air-blowing condition. The qualified seeding rate is over 85% in 1.4-1.8 kPa air pressure and can satisfy the needs to seed soybean at over 8?km/h operating speed. Seeding performance of the air-blowing vertical-rotor type precision seed-metering device is insensitive to seed-filling angle and seed-cleaning angle. The optimized results for seed-filling angle and seed-cleaning angle are consistent with the results at atmospheric pressure, which are 46.35° and 55° for seed-filling angle and seed-cleaning angle respectively. There is no remarkable influence of the air-blowing direction on seeding performance.
Number of references: 15
Main heading: Air cleaners
Controlled terms: Atmospheric pressure - Computer simulation - Design - Mathematical models - Pneumatic materials handling equipment - Regression analysis - Seed - Software design
Uncontrolled terms: Air pressures - Blowing direction - Operating parameters - Operating speed - Performance - Regression model - Seed-metering device - Seeding rate - Test results - Uniform design
Classification code: 921 Mathematics - 902.1 Engineering Graphics - 821.4 Agricultural Products - 723.5 Computer Applications - 723.1 Computer Programming - 922.2 Mathematical Statistics - 691.1 Materials Handling Equipment - 632.4 Pneumatic Equipment and Machinery - 451.2 Air Pollution Control - 443.1 Atmospheric Properties - 408 Structural Design - 651.2 Wind Tunnels
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 211. Accession number: 20093312251362
Title: Design of 6BX-40 ramie-stripping machine
Authors: Deng, Jianfeng1 ; Yang, Yaoduan2
Author affiliation: 1 Department of Mechanical and Electrical Engineering, Yiyang Vocational and Technical College, Yiyang 413049, China
2 Department of Mechanical and Electrical Engineering, Loudi Vocational and Technical College, Loudi 417000, China
Corresponding author: Deng, J. (djf27@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 98-102
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Based on the principle of variable-gap and fixed-pressure, the design idea and technology scheme of rotary-cutting ramie-stripping machine were presented. The working principle and technical characteristics of rotary-cutting mechanism for the arc variable-gap and fixed-pressure in double floating fulcrums were analyzed. According to the stress conditions of rotary-cutting mechanism, the relevant process parameters which affect the quality of ramie-stripping were tested and measured, on the basis of which, the main structures and parameters of rotary-cutting were designed and calculated, and the research on power and motion parameters of the mechanical model was made deeply in theory. The 6BX-40 prototype's trial and test showed that its stripping efficiency was raised 2-3 times than traditional methods, the glue content in fiber 25.8%, impurity rate 4.6%, loss rate of fiber 4.3% and the stripping quality met the national standards for quality requirements.
Number of references: 9
Main heading: Stripping (dyes)
Controlled terms: Hemp - Machine design - Mechanisms - Stresses
Uncontrolled terms: Cutting mechanisms - Design ideas - In-fiber - Loss rates - Main structure - Mechanical model - Motion parameters - National standard - Process parameters - Quality requirements - Ramie - Stress condition - Stripping efficiency - Stripping machine - Technical characteristics - Variable-gap and fixed-pressure - Working principles
Classification code: 819.1 Natural Fibers - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 821.4 Agricultural Products - 601.3 Mechanisms - 421 Strength of Building Materials; Mechanical Properties - 408.1 Structural Design, General - 601 Mechanical Design
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 212. Accession number: 20093312251901
Title: Optimizing control parameters for a piezoelectric hydroelectric servo-valve
Authors: E, Shiju1 ; Yang, Zhigang2 ; Cheng, Guangming2 ; Zhou, Miaolei2
Author affiliation: 1 College of Transportation, Zhejiang Normal University, Jinhua 321004, China
2 College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
Corresponding author: E, S. (esx_2001@zjnu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 208-211
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Performance of nozzle-flapper servo-valve driven by piezoelectric bimorph is decided in a great extend by the parameters of control system. Proposed a new control method of the integral separate PID for a piezoelectric hydroelectric servo-valve based on working mode of the servo-valve and the need to debug, a digital controller is designed based on the optimal control parameters of control system of the servo valve. The control effect is investigated through experiments, and how control parameters effecting on performance of servo-valve is analyzed. Response time of servo-valve is less than 6 ms when the proportion coefficient is 5.3, integral coefficient is 0.35 and differential coefficient is 3.0. Consequently, it is shown that the digital controller can meet the needs of designing and improving the servo-valve.
Number of references: 9
Main heading: Controllers
Controlled terms: Control system analysis - Optimal control systems - Optimization - Piezoelectric transducers - Piezoelectricity - Pneumatic control equipment
Uncontrolled terms: Control methods - Control parameter - Control parameters - Differential coefficient - Digital controller - Digital controllers - Optimal controls - Optimizing control - Piezoelectric bimorphs - Piezoelectric hydroelectric servo-valve - Response time - Servo-valve - Working mode
Classification code: 752.1 Acoustic Devices - 732.1 Control Equipment - 731.1 Control Systems - 921.5 Optimization Techniques - 708.1 Dielectric Materials - 701.1 Electricity: Basic Concepts and Phenomena - 632.4 Pneumatic Equipment and Machinery - 704 Electric Components and Equipment
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 227. Accession number: 20093312251380
Title: Generation process of product family modularization based on complex network
Authors: Fan, Beibei1 ; Qi, Guoning1 ; Ji, Yangjian1
Author affiliation: 1 Institute of Contemporary Manufacturing Engineering, Zhejiang University, Hangzhou 310027, China
Corresponding author: Fan, B. (sally_fanbeibei@yahoo.com.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 187-191
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Main structure of product family can be depicted as a directed complex network. Parameters such as node betweenness, edge betweenness and Q function values were calculated through simple-path detecting algorithm for obtaining distributing curve of Q and clustering dendrogram. Division results can be gained from clustering dendrogram. The results were adjusted and optimized according to parts usage times and entities with sign. As an example, a product family of the industry steam turbine was analyzed with this algorithm and some practical results were obtained.
Number of references: 17
Main heading: Modular construction
Controlled terms: Marine engines
Uncontrolled terms: Betweenness - Complex network - Complex networks - Dendrograms - Edge betweenness - Generation process - Main structure - Mass customization - Modularizations - Module division - Product families - Product family - Q-functions - Usage time
Classification code: 405.2 Construction Methods - 612 Engines - 671.2 Ship Equipment
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 228. Accession number: 20093312251383
Title: Adaptive control of nonlinear cracked rotor seal chaotic system
Authors: Yin, Yufeng1 ; Yao, Dechen1 ; Li, Jie1
Author affiliation: 1 School of Machinery and Electronics Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
Corresponding author: Yin, Y. (yinyufeng_ty@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 203-207 216
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: With the increase of structural parameters of a rotary machine, the sealing induced airflow excitation on the rotor increases significantly. By taking Muszynska's model for sealing force, the nonlinear dynamic equation of a rotor with cracked foundation was derived. According to adaptive control theory, a multi-parametric adaptive algorithm was presented. Numerical simulations on the rotor system were performed with this method. The results show that the parametric adaptive control method possesses strong capability of stability in control. The methodology is appropriate to the complexity of multiple parameters of non-self-governing chaotic system, when the system goes into chaos by outside disturb, and the working state can be adjusted to normal timely. The research results also provide the theoretical foundation for theory design of rotary machine and fault dynamic monitoring, and have high practical value.
Number of references: 13
Main heading: Adaptive control systems
Controlled terms: Adaptive algorithms - Chaotic systems - Computer simulation languages - Control theory - Machine design - Nonlinear equations - Rotating machinery
Uncontrolled terms: Adaptive control - Airflow induce - Cracked rotor - Fault dynamics - In-control - Induced airflow - Multiple parameters - Nonlinear dynamic equations - Numerical simulation - Parametric adaptive control - Research results - Rotary machine - Rotor systems - Sealing force - Structural parameter - Theoretical foundations - Working state
Classification code: 961 Systems Science - 931 Classical Physics; Quantum Theory; Relativity - 921.1 Algebra - 921 Mathematics - 731.1 Control Systems - 723.1.1 Computer Programming Languages - 723 Computer Software, Data Handling and Applications - 601.1 Mechanical Devices - 601 Mechanical Design
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 229. Accession number: 20093312251343
Title: Torque control strategies based on RecurDyn and Simulink for electric drive tracked vehicle
Authors: Li, Bo1 ; Zhang, Chengning1 ; Li, Junqiu1
Author affiliation: 1 School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
Corresponding author: Li, B. (mzsp66@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 1-5
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The dynamic model and the ground model were built by multi-body dynamics software RecurDyn, and the drive motor control system model was set up by Matlab/Simulink. The dynamic model and control system model were integrated to structure an entire vehicle virtual prototype model. Analyzing and building the strategies of torque adjustment, analyzing the driver's intent, the control logic was built by Stateflow. Based on the virtual prototype, the co-simulation approach and the testing of the prototype were applied to verify the torque control strategies.
Number of references: 6
Main heading: Electric drives
Controlled terms: Dynamic models - Model structures - Torque control - Vehicles
Uncontrolled terms: Control logic - Control strategies - Control system models - Cosimulation - Drive motors - Electric drive tracked vehicle - Ground models - Matlab/Simulink - Multi-body dynamic - RecurDyn - Simulink - STATEFLOW - Tracked vehicle - Virtual prototype
Classification code: 408 Structural Design - 432 Highway Transportation - 705 Electric Generators and Motors - 731.3 Specific Variables Control - 921 Mathematics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 240. Accession number: 20093312251353
Title: Design and experiment of 2BYS-6 type paddy weeding-cultivating machine
Authors: Wu, Chongyou1 ; Zhang, Min1 ; Jin, Chengqian1 ; Tu, Anfu1 ; Lu, Yan1 ; Xiao, Tiqiong1
Author affiliation: 1 Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
Corresponding author: Wu, C. (cywu59@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 51-54
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: This paper briefly describes the main structure, work principle and design of critical components of 2BYS-6 type paddy weeding-cultivating machine, and also analyzes the kinematical characteristics of the rotative weeding and the swing weeding. The experimental result of the machine in the field in which rice was transplanted by rice transplanter shows that the between rows average cleaning rate (relative cleaning rate) was 78.1%, the average cultivating depth was 4.39 cm, the injury seedling rate was under 6.89%, and the other various performances came to the design requirements.
Number of references: 8
Main heading: Machine design
Controlled terms: Machine components - Roads and streets
Uncontrolled terms: Paddy field - Parameters - Performance - Structure - Weeding-cultivating machine
Classification code: 406.2 Roads and Streets - 601 Mechanical Design - 601.2 Machine Components
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 255. Accession number: 20093312251365
Title: Progress in effects of high oxygen on postharvest physiology and quality of fresh fruits and vegetables
Authors: Liu, Zhanli1, 2 ; Wang, Xiangyou2 ; Zhu, Jiying2 ; Wang, Juan2
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 School of Light Industry and Agriculture Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author: Wang, X. (wxy@sdut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 112-118
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: High oxygen (21%-100%) is effective in inhibiting anaerobic fermentation, enzymatic discoloration and flavor loss, so it has been a new way of storage. The effects of high oxygen on postharvest physiology, biochemistry, chemical components and quality of fresh fruits and vegetables were reviewed, including respiration, ethylene production, tissue browning, reactive oxygen species metabolism, volatile compounds, nutrients, color, texture and decay. The limitations of research were discussed. It provides a reference for further research on high oxygen.
Number of references: 58
Main heading: Quality control
Controlled terms: Biochemistry - Chemical compounds - Ethylene - Fruits - Oxygen - Physiology - Volatile organic compounds
Uncontrolled terms: Anaerobic fermentation - Chemical component - Controlled atmosphere storage - Ethylene production - Fresh fruits - High oxygen - Postharvest - Quality - Reactive oxygen species - Tissue browning - Volatile compounds
Classification code: 821.4 Agricultural Products - 804.2 Inorganic Compounds - 804.1 Organic Compounds - 913.3 Quality Assurance and Control - 804 Chemical Products Generally - 461.9 Biology - 451.1 Air Pollution Sources - 801.2 Biochemistry
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 256. Accession number: 20093312251376
Title: Recognition and classification for vision navigation application environment of agricultural vehicle
Authors: Zhao, Bo1 ; Wang, Meng2 ; Mao, Enrong2 ; Zhang, Xiaochao1 ; Song, Zhenghe2
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Zhao, B. (zhaoboshi@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 166-170
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The influence of the various illumination, weed, and shadow environment to the path recognition was investigated. A new research method for vision navigation system of agricultural vehicle in the application environment was proposed. The various navigation environments were classified automatically by neural network. According to classification results, different path recognition methods were applied in navigation system. Experimental results of the recognition and the classification prove that the method is effective and can improve the practicability and reliability of vision navigation system. The classification correct rate is 95%, and the average cost time is 23 ms.
Number of references: 12
Main heading: Navigation
Controlled terms: Intelligent networks - Navigation systems - Neural networks - Vehicles
Uncontrolled terms: Agricultural vehicle - Agricultural vehicles - Application environment - Average cost - Classification results - Navigation environment - Path recognition - research methods - Vision navigation
Classification code: 718 Telephone Systems and Related Technologies; Line Communications - 717 Optical Communication - 716.3 Radio Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 723.4 Artificial Intelligence - 655.1 Spacecraft, General - 434.4 Waterway Navigation - 432 Highway Transportation - 431.5 Air Navigation and Traffic Control - 461.1 Biomedical Engineering
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 257. Accession number: 20093312251375
Title: Rapid crop-row detection based on improved Hough transformation
Authors: Zhao, Ruijiao1 ; Li, Minzan1 ; Zhang, Man1 ; Liu, Gang1
Author affiliation: 1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
Corresponding author: Li, M. (limz@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 163-165 221
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A rapid detection method of crop-row based on improved Hough transformation was suggested to detect the position of crop-rows after analyzing the characteristics of field crop planting. The true color images containing crop-row and soil background were captured as the research objects. Since the histogram projection is easily disturbed by external factors and the Hough transformation has a low speed, a combination of these two algorithms was developed. First, a true color image of field crops was processed with 2G-R-B gray and OTSU to separate plants from soil. Second, the noise was eliminated by fast median filtering algorithm, and then the image was divided into ten horizontal strips to get the anchor points according to the geometric distribution of the crop-rows. Finally, the centerline of crop rows was obtained by Hough transformation using those points. Test results show that the processing speed of the improved Hough transformation method is four times faster than that of original Hough transformation with the similar positioning accuracy, and the centerline detected can highly match the crop-row.
Number of references: 10
Main heading: Crops
Controlled terms: Carbon fiber reinforced plastics - Computer vision - Soils
Uncontrolled terms: Anchor point - Centerlines - Crop rows - External factors - Field crops - Geometric distribution - Histogram projection - Hough transformation - Low speed - Machine vision - Median filtering algorithm - Positioning accuracy - Processing speed - Rapid detection - Research object - Test results - True colors
Classification code: 821.4 Agricultural Products - 817.1 Polymer Products - 741.2 Vision - 731.6 Robot Applications - 723.5 Computer Applications - 483.1 Soils and Soil Mechanics - 415.2 Plastics Structural Materials
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 258. Accession number: 20093312251348
Title: Influence of mounting position on vehicle vibration input energy
Authors: Zhang, Junhong1 ; Bi, Fengrong1 ; Ni, Guangjian1
Author affiliation: 1 State Key Laboratory for Internal Combustion Engine and Combustion, Tianjin University, Tianjin 300072, China
Corresponding author: Zhang, J. (zhangjh@tju.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 25-28 44
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to choose the reasonable powertrain mounting locations, the finite element models of a certain type of engine block, transmission and powertrain were established, and their dynamic characteristics were analyzed separately. The results show that the middle mounting point located on flywheel is better than which on clutch shell. Engine vibration severity has decreased from 3.92 mm/s to 3.20 mm/s, and powertrain vibration severity has decreased from 4.13 mm/s to 3.43 mm/s by changing the mounting locations. The experimental validation shows that reasonable choice of powertrain mounting locations is useful to reduce engine vibration transmission and increase ride comfort.
Number of references: 3
Main heading: Finite element method
Controlled terms: Clutches - Light transmission - Mountings - Vibration control
Uncontrolled terms: Dynamic characteristics - Engine blocks - Engine vibration - Experimental validations - Finite element analysis - Finite element models - Input energy - Mounting points - Powertrain - Powertrain vibration - Ride comforts - Vehicle vibrations
Classification code: 601.2 Machine Components - 602.2 Mechanical Transmissions - 731.3 Specific Variables Control - 741.1 Light/Optics - 921.6 Numerical Methods
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 259. Accession number: 20093312251361
Title: Numerical simulation for soil water movement of gutter under water conservation in arbor-shrub-hedge-gutter
Authors: Guo, Xianghong1 ; Sun, Xihuan1 ; Ma, Juanjuan1
Author affiliation: 1 College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Corresponding author: Sun, X. (sunxihuan@tyut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 93-97
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: 2-D mathematic model of unsaturated soil moisture movement of gutter on the condition of water conservation in arbor-shrub-hedge-gutter was established based on the theory of soil water dynamics and the characteristics of soil moisture movement. The finite element method was used to solve it. A series of indoor experiments were conducted to verify the model. The computational results derived from the model of water front and soil moisture content were in accordance with the experimental results. It indicated that the mathematic model of soil water movement is correct and solving of the model with finite element method is feasible.
Number of references: 9
Main heading: Finite element method
Controlled terms: Computer simulation languages - Fences - Geologic models - Groundwater - Mathematical models - Moisture determination - Permittivity - Roofs - Simulators - Soil conservation - Soil moisture - Underwater soils - Water conservation - Water content
Uncontrolled terms: Computational results - Indoor experiment - Mathematic model - Moisture movement - Numerical simulation - Soil moisture content - Soil water dynamics - Soil water movement - Under water - Unsaturated soil - Water front
Classification code: 944.2 Moisture Measurements - 655.2 Satellites - 657.1 Solar Energy and Phenomena - 662.1 Automobiles - 671 Naval Architecture - 701 Electricity and Magnetism - 708.1 Dielectric Materials - 723.1.1 Computer Programming Languages - 821.3 Agricultural Methods - 921 Mathematics - 921.6 Numerical Methods - 654.1 Rockets and Missiles - 402 Buildings and Towers - 403.1 Urban Planning and Development - 408.2 Structural Members and Shapes - 444 Water Resources - 621 Nuclear Reactors - 444.2 Groundwater - 481.1 Geology - 483.1 Soils and Soil Mechanics - 619.2 Tanks - 471.1 Oceanography, General
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 292. Accession number: 20093312251347
Title: Torus streamline method design of 3-element centripetal-turbine hydraulic torque converters
Authors: Liu, Shiping1, 2 ; Quan, Long1
Author affiliation: 1 Institute of Mechatronic Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2 Department of Mechanical Engineering, North China Institute of Water Conservancy and Hydro-electric Power, Zhengzhou 450011, China
Corresponding author: Liu, S. (liushiping@ncwu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 20-24 44
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The design method of 3-element centripetal-turbine hydrodynamic torque converters was investigated. A new design method based on torus streamline was proposed. The particle movement inside the hydrodynamic torque converter was considered as the curvilinear movement on a torus surface, and could be decomposed into meridional component movement and circumferential component movement. The meridional streamline equations and torus streamline equations were derived. The blade influence on streamline was analyzed and a streamlined thickness function was put forward. The equations of blade camber line combined with the thickness function, the blade surface equation was obtained. The research result shows that either a meridional streamline or a torus streamline is an approximate parabola.
Number of references: 11
Main heading: Hydraulic torque converters
Controlled terms: Design - Fluid dynamics - Hydraulic motors - Hydraulics - Hydrodynamics - Torque - Turbines
Uncontrolled terms: Blade - Blade Surface - Design method - New design - Particle movement - Research results - Streamline method - Thickness function - Torus streamline - Turbine hydraulics
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 631.1.1 Liquid Dynamics - 631.2 Hydrodynamics - 632.1 Hydraulics - 632.2 Hydraulic Equipment and Machinery - 902.1 Engineering Graphics - 931.1 Mechanics - 631.1 Fluid Flow, General - 617.1 Hydraulic Turbines - 612.3 Gas Turbines and Engines - 602 Mechanical Drives and Transmissions - 421 Strength of Building Materials; Mechanical Properties - 408 Structural Design - 617.2 Steam Turbines
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 293. Accession number: 20093312251384
Title: Roundness on-machine measurement method based on IRM and wavelet transform
Authors: Zhang, Yumei1, 2 ; Zuo, Chuncheng1 ; Li, Chunfang1
Author affiliation: 1 College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
2 Department of Vocational Education, Chifeng University, Chifeng 024000, China
Corresponding author: Zuo, C. (zcc@mail.jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 212-216
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Aiming at solving two key problems namely main shaft movement error (MSME) separation and the signals' denoising existing in improving the measurement accuracy of the roundness on-machine measurement, a new roundness on-machine measurement method was proposed. In this method, the improved reverse method (IRM) was introduced to minimize the influence of the MSME on the roundness error. Wavelet transform based denoising technique was applied to separate the noise and the high frequency components from the roundness signals. The experimental results show that the measurement accuracy of the proposed method nearly reaches that of the coordinate measuring machine, the relative error is 4% on average, and the repeatability is nearly the same.
Number of references: 10
Main heading: Measurements
Controlled terms: Mining - Mixer circuits - Wavelet transforms
Uncontrolled terms: De-noising - De-noising techniques - High frequency components - IRM - Key problems - Main-shaft - Measurement accuracy - Movement error - On-machine measurement - Relative errors - Roundness - Roundness error
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.3 Mathematical Transformations - 713.3 Modulators, Demodulators, Limiters, Discriminators, Mixers - 502.1 Mine and Quarry Operations
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 294. Accession number: 20093312251371
Title: Application of cascade control system in starch production-line based on rapid prototyping of DSP
Authors: Shen, Gang1 ; Huang, Qitao1 ; He, Jingfeng1 ; Cong, Dacheng1 ; Bai, Xiaodong1 ; Han, Junwei1
Author affiliation: 1 School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150080, China
Corresponding author: Shen, G. (shenganghit@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 143-148 123
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Cascade control PID was used to adjust the density of the starch production-line. After analyzing and comparing the principle of traditional PID and Smith prediction PID, a mathematical model about cascade control loop of starch production-line was proposed. Then, these two controllers and their outer loop controller were designed and simulated by using tradition PID and Smith prediction PID respectively. The simulation results show that the cascade control system with Smith prediction PID on its outer loop is better than traditional PID. In the end, the implementation of a rapid prototyping control system was presented, which involves the design of DSP algorithms by using Matlab/Simulink blocksets to setup the Simulink module of the starch production-line, automated code generation in the CCS integrated development environment, and downloading of executable code to the Texas Instruments' TMS320C2812 and TMS320C6713.
Number of references: 16
Main heading: Proportional control systems
Controlled terms: Cascade control systems - Concurrent engineering - Control system analysis - Controllers - Digital signal processors - Job analysis - Mathematical models - Rapid prototyping - Starch - Web services
Uncontrolled terms: Cascade control PID - Density - Simulation - Smith prediction PID - Starch production-line
Classification code: 815.1.1 Organic Polymers - 822.3 Food Products - 903.4 Information Services - 912 Industrial Engineering and Management - 913.1 Production Engineering - 913.6 Product Development; Concurrent Engineering - 921 Mathematics - 804.1 Organic Compounds - 716.1 Information Theory and Signal Processing - 722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 723.5 Computer Applications - 731.1 Control Systems - 732.1 Control Equipment
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 309. Accession number: 20093312251381
Title: Networked integration manufacturing based on different numerical control systems
Authors: Li, Jubo1 ; Deng, Xiaozhong1, 2 ; Xu, Aijun2 ; Yang, Jianjun2 ; Zhang, Hua2
Author affiliation: 1 School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
2 Electromechanical Engineering College, Henan University of Science and Technology, Luoyang 471003, China
Corresponding author: Li, J. (lipo168202@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 192-196 175
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To meet the requirement of networked manufacturing, an architecture of networked integration communication based on different numerical control systems in the workshop level was established, which integrating the information of the equipment level and the workshop applications level so as to realize integration and information interactions between shop-floor equipment and top-level application systems networked communication mechanism of communication system was constructed, information integration of applied equipment, and its information integration within enterprise based on common object request broker architecture (CORBA), information integration between enterprises based on Web services were discussed. This communication system is helpful to integrate manufacturing information within and between enterprises in the networked manufacturing system.
Number of references: 10
Main heading: Common object request broker architecture (CORBA)
Controlled terms: Architectural design - Communication systems - Computer architecture - Information retrieval - Integration - Manufacture - Middleware - Numerical control systems - Web services
Uncontrolled terms: Application systems - Communication mechanisms - Equipment level - Information integration - Information interaction - Networked manufacturing - Networked manufacturing systems - Shop floor
Classification code: 921.2 Calculus - 913.4 Manufacturing - 903.4 Information Services - 903.3 Information Retrieval and Use - 731.1 Control Systems - 723.5 Computer Applications - 723.1 Computer Programming - 723 Computer Software, Data Handling and Applications - 722 Computer Systems and Equipment - 716 Telecommunication; Radar, Radio and Television - 537.1 Heat Treatment Processes - 408.1 Structural Design, General - 402 Buildings and Towers
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 310. Accession number: 20093312251372
Title: Quick determination method of milk powder quality by near-infrared spectroscopy
Authors: Yan, Hui1, 2 ; Chen, Bin1 ; Zhu, Wenjing1
Author affiliation: 1 College of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
2 School of Biological and Environmental Engineering, Jiangsu University of Science and Technology, Zhenjiang 212018, China
Corresponding author: Chen, B. (ncp@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 149-152 137
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Eighty milk powder samples which represented over 10 formulae of ingredients from 11 commercial brands were collected and a PDA type near-infrared spectrometer was used to obtain their diffusion reflectance spectra (1 nm resolution) within the wavelengths of 1089-2219 nm. The obtained spectra were pre-treated with standard normal variate correction (SNV), wavelet denoise and 1-order differentiation method. Through comparing the weighted distribution of the milk powder's five principal ingredients at various wavelengths, different ranges of wavelength were selected to establish calibration models and to analyze their prediction accuracy. The results showed that spectrum information of milk powder's protein and fat composition was mainly distributed within the wavelengths of 1100-1400 nm and 1800-2200 nm. It was shown that wavelet denoise was an excellent method for pre-processing spectra, which could significantly enhance the stability of calibration models and prediction accuracy. The present study reveals that it is feasible to determine the concentrations of protein and fat in milk powder of various origins with a PDA type near-infrared spectrometer.
Number of references: 13
Main heading: Infrared spectroscopy
Controlled terms: Calibration - Dairy products - Infrared spectrometers - Personal digital assistants - Pile foundations - Powders - Spectrometry - Spectroscopic analysis - Textiles - Wavelength
Uncontrolled terms: Milk power - Near-infrared spectroscopy - Quality detection - Wavelength selection - Wavelet denoise
Classification code: 819 Synthetic and Natural Fibers; Textile Technology - 822.3 Food Products - 902.2 Codes and Standards - 931.2 Physical Properties of Gases, Liquids and Solids - 941 Acoustical and Optical Measuring Instruments - 941.4 Optical Variables Measurements - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 804 Chemical Products Generally - 483.2 Foundations - 536 Powder Metallurgy - 711 Electromagnetic Waves - 722 Computer Systems and Equipment - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 751.1 Acoustic Waves - 753.1 Ultrasonic Waves - 801 Chemistry
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc. 321. Accession number: 20093312251378
Title: Algorithm of path navigation line for robot in forestry environment based on machine vision
Authors: Wu, Jiayi1 ; Yang, Qinghua1 ; Bao, Guanjun1 ; Gao, Feng1
Author affiliation: 1 MOE Key Laboratory of Mechanical Manufacture and Automation, Zhejiang University of Technology, Hangzhou 310014, China
Corresponding author: Wu, J. (wu_jiayi@yahoo.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 7
Issue date: July 2009
Publication year: 2009
Pages: 176-179
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: An algorithm of producing navigation line for robot in forestry environment based on machine vision was developed. By scanning an image, boundaries between the tree bottom and earth are recorded, and the central points between both tree bottom sides are gained and a straight line generated by least-square fitting to perform as the navigating line. A central line was obtained as the navigation guidance line. Matlab simulation results show the arithmetic efficiency in various forestry environments, in accordance with human vision recognition. The reliability and stability are demonstrated during batch processing.
Number of references: 11
Main heading: Timber
Controlled terms: Computer vision - Forestry - Intelligent robots - MATLAB - Navigation
Uncontrolled terms: Batch processing - Central point - Human vision - Least-square fitting - Machine vision - Matlab simulations - Navigation guidance - On-machines - Path navigation - Reliability and stability - Straight lines
Classification code: 821.0 Woodlands and Forestry - 811.2 Wood and Wood Products - 741.2 Vision - 731.6 Robot Applications - 723.5 Computer Applications - 921 Mathematics - 723.1.1 Computer Programming Languages - 655.1 Spacecraft, General - 434.4 Waterway Navigation - 431.5 Air Navigation and Traffic Control - 415.3 Wood Structural Materials - 716.3 Radio Systems and Equipment
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
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