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2008年第39卷第9期共收录42篇

1.  Accession number:084211646799
Title:Fuzzy PID control on semi-active air suspension
Authors:Yang, Qiyao; Zhou, Kongkang; Zhang, Wenna; Xu, Xing; Yuan,Chunyuan
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 24-29
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The Fuzzy-PID complex technology was adopted to solve the control technical problem of air suspension. The fuzzy reasoning was applied to the self-tuning of PID parameters, and the research was conducted on semi-active air suspension. A Fuzzy-PID controller was designed, which was used in Matlab/Simulink simulation and bench test of 1/4 model of the semi-active air suspension. A Fuzzy-PID module was constructed with S function and Fuzzy Inference System Toolbox in the simulation model. Compared with the traditional PID control, the control of the semi-active air suspension could be used to reduce the sprung mass acceleration and suspension action itinerary with better robustness advantages, and improve ride comfort. The simulated results agreed well with the testing data.
Number of references:12
Ei main heading:Fuzzy control
Ei controlled terms:Control theory  -  Fuzzy inference  - Proportional control systems  -  Suspensions (components)  -  Three term control systems  -  Time varying control systems  -  Two term control systems  -  Well testing
Uncontrolled terms:Fuzzy-PID control  -  Semi-active air suspension -  Vehicle  -  Air suspension  -  Semi-active  -  Fuzzy-PID  - Matlab/Simulink simulation  -  Ride comforts  -  Fuzzy-PID controllers  -  Fuzzy reasoning   -  Sprung mass acceleration  - P-I-D control  -  Simulation modelling  -  Fuzzy inference system  - PID parameters  -  S function  -  Self-tuning  -  Technical problems  -  Simulated results  -  Testing data
Ei classification codes:446.1 Water Supply Systems  -  512.1.2 Development Operations  -  512.2.2 Development Operations  -  601.2 Machine Components  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723.4 Artificial Intelligence  -  723.4.1 Expert Systems  -  731 Automatic Control Principles and Applications  -  731.1 Control Systems  - 921 Mathematics
Database:Compendex
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2.  Accession number:084211646800
Title:Handling stability simulation and analysis of five-axle heavy-vehicle based on all-wheel steering
Authors:Zhang, Junyou; Wang, Shufeng; Li, Huashi
Author affiliation:Shandong University of Technology, Zibo 255049, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 30-34
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Aimed at the big radius at low speed and bad stability at high speed of five-axle heavy-vehicle with front-wheel-steering, the multi-axle steering technology of five-axle heavy-vehicle was analyzed. A 2-DOF (2-degree of freedom) model and differential equations of five-axle vehicle with all-wheel steering were established. The steering angle ratios of different axles, state condition matrix, transfer functions were obtained based on zero side-slip angle of mass center control strategy. Finally, the handling stability performance of the five-axle vehicle with three steering models were simulated and compared. The results prove that multi-axle steering can decrease the steering radius at low speed and improve vehicle stability at high speed, and five-axle vehicle with all-wheel steering has the best handling stability.
Number of references:8
Ei main heading:Automobile parts and equipment
Ei controlled terms:Automobile frames  -  Automobile steering equipment  -  Axles  -  Difference equations  -  Differential equations  -  Differentiation (calculus)  -  Railroad cars  -  Speed -  Steering  -  Transfer functions   -  Vehicles  -  Wheels
Uncontrolled terms:Handling stability  -  Heavy-vehicle  - Multi-axle steering  -  Wheel steering  -  High speeds  -  Low speed -  Vehicle stability  -  Steering radius  -  Steering angles  - Control strategies   -  Mass centers  -  Side-slip angle  -  Degree of freedom
Ei classification codes:432 Highway Transportation  -  601.2 Machine Components  -  662.4 Automobile and Smaller Vehicle Components  - 663.2 Heavy Duty Motor Vehicle Components  -  671.2 Ship Equipment -  682.1.1 Railroad Cars  -  703.1 Electric Networks  -  731.1 Control Systems  -  741.1 Light/Optics  -  921 Mathematics  -  921.2 Calculus  -  921.6 Numerical Methods  -  931.1 Mechanics
Database:Compendex
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3.  Accession number:084211646801
Title:Simulation on braking running conditions for ABS bench test
Authors:Chen, Moran; Ding, Nenggen; Zhang, Wei; Wang, Weida; Yu, Guizhen
Author affiliation:Beihang University, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 35-37 34
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The running conditions of anti-lock brake system (ABS) should be simulated for ABS bench test. This paper studied the simulation method of the braking running conditions of ABS on
testing bench, designed the simulation interface and set running conditions. According to the wheel speed curves under various road surfaces and different vehicle speeds, the simulation running conditions of wheel speed ABS bench test need were constructed by the interface. In order to provide essential running condition for ABS bench test in various running conditions, the wheel speed signals simulation device was used to drive servo motor which rotates gear rings to produce the set wheel speed signals. The well running of ABS testing bench and the practical bench testing result of ABS obviously shows that the simulation wheel speed signals are applicable to bench test, and the simulation running conditions meet the requirements of bench test and the requests of intensified experimentation.
Number of references:7
Ei main heading:Theorem proving
Ei controlled terms:Speed  -  Systems engineering  -  Testing  - Well testing  -  Wheels
Uncontrolled terms:Anti-lock brake system  -  Running conditions simulation  -  Testing bench  -  Vehicles  -  Wheel speed signals
Ei classification codes:422.2 Test Methods  -  423.2 Test Methods  - 446.1 Water Supply Systems  -  512.1.2 Development Operations  - 512.2.2 Development Operations  -  601.2 Machine Components  - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723.4 Artificial Intelligence  -  912 Industrial Engineering and Management  -  921 Mathematics  -  931.1 Mechanics  -  961 Systems Science
Database:Compendex
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4.  Accession number:084211646802
Title:Analysis on efficiency characteristics of multi-range composite CVT system
Authors:Yang, Shujun; Cai, Xing
Author affiliation:East China Jiaotong University, Nanchang 330013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 38-42 78
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:A efficiency model of the multi-range composite CVT system working on the positive and negative phases was established. The relation curves between overall efficiency of the multi-range composite CVT system and transmission ratio of metal pushing V-belt CVT, transmission torque and input rotate speed, were obtained by simulation. The simulated results indicated that no matter the CVT system works on positive or negative phase, the system efficiency increases with the CVT transmission ratio, torque or input speed increased. The efficiency is higher than that of metal pushing V-belt CVT system obviously. Furthermore, the system can be applied in high-power vehicle transmission, which enlarges the speed ratio range of transmission and increases the overall power.
Number of references:13
Ei main heading:Variable speed transmissions
Ei controlled terms:Production platforms  -  Speed  -  Turbulent flow  -  Vehicle transmissions
Uncontrolled terms:Composite continuously variable transmission system  -  Efficiency  -  Multi-range  -  Metal pushing  -  V-belt CVT  -  Transmission ratios  -  Simulated results  -  High powers  - Rotate speed  -  System efficiencies   -  Negative phase  - Overall efficiency  -  Speed ratio  -  Overall power  -  Efficiency characteristics
Ei classification codes:602.2 Mechanical Transmissions  -  631.1 Fluid Flow, General  -  674.2 Marine Drilling Rigs and Platforms  - 931.1 Mechanics
Database:Compendex
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5.  Accession number:084211646804
Title:Design and experiment on the zigzag scraper transportation device for remnant plastic film and stubble
Authors:Zhang, Xuejun; Wu, Chengwu; Wang, Wei; Ma, Shaohui; Wang, Xufeng
Author affiliation:Tarim University, Alar 843300, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 49-51
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The structural principle of zigzag scraper transportation device in combine machinery for field cleaning and land preparation operations, which is used for remnant plastic film, stubble and
soil, was studied. Meanwhile, the resistance, the energy consumption and power were analyzed. An optimization mathematical model was established for the pursuit of minimal energy consumption. The optimization results including the length of scraper 890 mm, the width 260 mm, the distance 500 mm, the working speed 2.5 m/s and the working obliquity 33° were obtained by calculation. Finally, the results were validated by experiment. The optimal distance between the first scrapers and loosening shovels was 300 mm.
Number of references:4
Ei main heading:Tools
Ei controlled terms:ABS resins  -  Film preparation  -  Machine design  -  Machinery  -  Mathematical models  -  Optimization  - Plastic films  -  Protective coatings
Uncontrolled terms:Agricultural machinery  -  Combine machinery for field cleaning and land preparation operations  -  Loosening shovel -  Optimization design  -  Transport device  -  Zigzag scraper
Ei classification codes:539.2.2 Protecting Materials  -  601 Mechanical Design  -  603 Machine Tools  -  605 Small Tools and Hardware  -  712.1 Semiconducting Materials  -  813.1 Coating Techniques  -  813.2 Coating Materials  -  815.1.1 Organic Polymers -  817.1 Polymer Products  -  921 Mathematics  -  921.5 Optimization Techniques
Database:Compendex
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6.  Accession number:084211646803
Title:Development of conservation tillage
Authors:Gao, Huanwen; Li, Hongwen; Li, Wenying
Author affiliation:China Agricultural University, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 43-48
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Human beings are facing great challenges today on global warming, resources shortage, land degradation and population expansion. The development of CT (conservation tillage) should have big help to reply the challenges and promote sustainable agriculture forward. CT has become the major tillage method in American and Australian continents, also has development in European, Asian and African continents with different levels. The agronomy study of CT in China had started in early 60' last century, but the mechanized CT was started later. From 1991, quite a few of light as well power driven no-till planters, together with many CT field technologies have been created, thus, a sound base for CT demonstration and extension was formed.
Number of references:39
Ei main heading:Electric instrument transformers
Ei controlled terms:Agricultural machinery  -  Agriculture  -  Crops -  Global warming  -  Soil conservation  -  Water conservation
Uncontrolled terms:Conservation tillage  -  Summary  -  Sustainable farming  -  Land degradation  -  No-till planters  -  Sustainable agriculture  -  European  -  Population expansion  -  Human beings
Ei classification codes:403.1 Urban Planning and Development  - 443.1 Atmospheric Properties  -  444 Water Resources  -  451 Air Pollution  -  483.1 Soils and Soil Mechanics  -  704 Electric Components and Equipment  -  714 Electronic Components and Tubes  - 821 Agricultural Equipment and Methods; Vegetation and Pest Control -  821.1 Agricultural Machinery and Equipment  -  821.3 Agricultural Methods  -  821.4 Agricultural Products  -  942.1 Electric and Electronic Instruments
Database:Compendex
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7.  Accession number:084211646805
Title:Research on the stress and oscillation of Pelton turbine's nozzle and bucket
Authors:Li, Qinggang; Song, Wenwu; Zhou, Min; Fu, Jie; Yang, Zuowei
Author affiliation:Xihua University, Chengdu 610039, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 52-55 59
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:With the aim to find out the reason for rupture and inefficiency of Pelton turbine runner, a 3-D model for the runner and nozzle of Pelton turbine was established by UG software. The stress analysis of the running single bucket was conducted on by ANSYS software, and stress distribution and maximum stress value point were determined. The natural frequency and oscillation shape of the runner and nozzle of Pelton turbine were obtained by model analysis. The results provide references for the bucket strength design and the nozzle oscillation research of multi-nozzle and multi-bucket turbine runner.
Number of references:4
Ei main heading:Engines
Ei controlled terms:Electric generators  -  Modal analysis  - Nozzles  -  Strength of materials  -  Stress concentration  -  Three dimensional  -  Turbines
Uncontrolled terms:3-D model  -  Bucket  -  Nozzle  -  Pelton turbine  -  Stress calculation
Ei classification codes:421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  612 Engines  -  612.3 Gas Turbines and Engines  -  617.1 Hydraulic Turbines  -  617.2 Steam Turbines  - 617.3 Steam Engines  -  631.1 Fluid Flow, General  -  654.2 Rocket Engines  -  705.2 Electric Generators  -  723.5 Computer Applications  -  902.1 Engineering Graphics  -  921 Mathematics  - 951 Materials Science
Database:Compendex
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8.  Accession number:084211646806
Title:Experiment and design on key parts of suaeda-heteroptera-kitag combine
Authors:Yan, Mingde; Jia, Weidong
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 56-59
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The mechanization harvesting of Suaeda-heteroptera-kitag, including threshing and clearing, is difficult because of the high water content and small seeds of Suaeda-heteroptera-kitag. A new method was put forward. By experiment, spike-teeth was used at the feeding part of cylinder teeth of the threshing mechanism, the combination of spike-teeth and arc teeth was used at the middle part, and the combination of spike-teeth and weed board was applied at the weeding part. The cylinder length could not be less than 1100 mm, rotating speed was 800 r/min, and rotate speed of axial-flow fan was 400-450 r/min. Finally, the spherical vibrating screen with the size of 1200 mm × 1000 mm was obtained by the table experiment of cleaning mechanism.
Number of references:7
Ei main heading:Dentistry
Ei controlled terms:Cylinders (shapes)  -  Experiments  -  Machinery -  Mechanisms  -  Speed  -  Water content
Uncontrolled terms:Cleaning mechanism  -  Combine  -  Cylinder teeth -  Experiment  -  Suaeda-heteroptera-kitag  -  Threshing part
Ei classification codes:408.2 Structural Members and Shapes  -  444 Water Resources  -  461.1 Biomedical Engineering  -  461.6 Medicine and Pharmacology  -  462.3 Dental Equipment and Supplies  -  601 Mechanical Design  -  601.3 Mechanisms  -  901.3 Engineering Research  -  931.1 Mechanics
Database:Compendex
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9.  Accession number:084211646807
Title:Double knife section reciprocating cutter and drive mechanismfor combine
Authors:Chen, Ni; Gong, Yongjian; Chen, Dejun; Yu, Hongjuan; Xiong,Yongsen
Author affiliation:Jinhua College of Profession and Technology,Jinhua 321017, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Societyof Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 60-63 29
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing,100083, China
Abstract:A double knife section reciprocating cutter was applied in a whole-feeding rice-wheat combine by setting a standing grain leading device and a stacked drive mechanism. The various parameters calculation equations of double knife section reciprocating cutter and drive mechanism ware established. The numerical analysis of cutting diagram was carried out with Matlab and the contrast determination of amplitude-frequency between single and double knife section reciprocating cutter was obtained. The results show that the stacked drive mechanism can shorten its own protractile width and not affect first travel operations of the whole feeding combine. The standing grain leading device can solve the grain leading and horizontal supports of the cutter without blade protection. The absolute velocity of double knife section reciprocating cutter is the twice of that of the single knife. The average cutting velocity is 1.58 m/s. The double knife section reciprocating cutter can improve the efficiency of the harvesting operations and lower the
trouble due to vibration.
Number of references:5
Ei main heading:Cutting
Ei controlled terms:Feeding  -  Grain (agricultural product)  - MATLAB  -  Mechanisms  -  Numerical analysis  -  Parameter estimation
Uncontrolled terms:Combine  -  Double knife section reciprocating cutter  -  Drive mechanism  -  Cutting velocity  - Amplitude-frequency  -  Parameters calculation
Ei classification codes:601.3 Mechanisms  -  604.1 Metal Cutting  - 606.2 Abrasive Devices and Processes  -  691.2 Materials Handling Methods  -  723.1.1 Computer Programming Languages  -  723.5 Computer Applications  -  731.1 Control Systems  -  821.4 Agricultural Products  -  921 Mathematics  -  921.6 Numerical Methods
Database:Compendex
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10.  Accession number:084211646808
Title:Simulation and experiments on the focusing ultrasonic levitation
Authors:Gao, Jianmin; Chen, Zhiwei; Ren, Ning
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 64-67
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:A three-dimensional parametric model of focusing ultrasonic levitation was built up with Pro/E, and a forth-symmetry finite element model of harmonic chamber was established based on the symmetry of harmonic chamber. The key working parameters of ultrasonic levitation were obtained by the modal analysis, and the harmonic analysis of the chamber model was carried out. The results showed that the capability of focusing levitation was better. Subsequently, the author analyzed the distributions and characteristics of the acoustic field in the chamber with various sizes. The corresponding experiments were carried out with the ultrasonic levitation system. The results indicate that the working properties parameters are in agreement with the simulated results.
Number of references:10
Ei main heading:Finite element method
Ei controlled terms:Acoustic fields  -  Acoustics  -  Focusing  - Fourier series  -  Harmonic analysis  -  Modal analysis  -  Three dimensional  -  Ultrasonics
Uncontrolled terms:Acoustic field  -  Finite element  -  Ultrasonic levitation  -  Chamber model  -  Working parameters  -  Working properties  -  Finite element model  -  Simulated results  - Parametric modeling
Ei classification codes:711.1 Electromagnetic Waves in Different Media  -  723.5 Computer Applications  -  741.1 Light/Optics  -  751 Acoustics, Noise. Sound  -  751.1 Acoustic Waves  -  753.1 Ultrasonic Waves  -  902.1 Engineering Graphics  -  921 Mathematics -  921.3 Mathematical Transformations  -  921.6 Numerical Methods  - 941.2 Acoustic Variables Measurements
Database:Compendex
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11.  Accession number:084211646809
Title:Preparation technology optimization of potassium carbonate from hickory hull
Authors:Chen, Xiangming; Yu, Zhimin; Jin, Jie
Author affiliation:Gansu Agricultural University, Lanzhou 730070, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 68-72
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Hickory Hull is a kind of forestry waste and severely pollutes ecological environment, so how to make use of forest resources is the aim of this research. The inorganic composition of Hickory Hull was analyzed by the atomic absorption spectrometry. The results showed that there were more K elements in Hickory Hull. It is nearly common that wet digestive method compared with dried digestive. The thermal treatment was studied on Hickory Hull to produce potassium carbonate, and orthogonalization test was projected on three elements, ashing temperature, time and material diameter. The best technology condition was determined by the experiment index of ash and K rate, the contents of potassium carbonate, through thermal analysis and X ray diffraction analysis. The results showed that the optimal conditions of ashing temperature 600°C, ashing time 6 h, material diameter 5-10 mm, the rate of K was about 30%; calcination temperature 600°C, calcination time about 0.5 hours, the purity of potassium carbonate can be up to 98%.
Number of references:8
Ei main heading:Potash
Ei controlled terms:Absorption spectroscopy  -  Absorption  - Atomic absorption spectrometry  -  Atomic spectroscopy  - Bioactivity  -  Calcination  -  Carbonation  -  Heat treatment  -
Potassium  -  Theorem proving   -  Thermoanalysis
Uncontrolled terms:AAS  -  Hickory Hull  -  Potassium carbonate  - Preparation  -  Technology optimization
Ei classification codes:461.6 Medicine and Pharmacology  -  537.1 Heat Treatment Processes  -  549.1 Alkali Metals  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723.4 Artificial Intelligence  -  741 Light, Optics and Optical Devices  -  741.3 Optical Devices and Systems  - 801 Chemistry  -  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  804.2 Inorganic Compounds  -  821.2 Agricultural Chemicals  -  921 Mathematics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  931.3 Atomic and Molecular Physics  - 941.3 Optical Instruments  -  941.4 Optical Variables Measurements
Database:Compendex
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12.  Accession number:084211646810
Title:Preparation process of FAME with Zr-modified solid acid catalysis
Authors:Jiang, Shaotong; Zhang, Yi; Su, Jiayu
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 73-78
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Solid acid catalyst can be applied to the transterification as a substitute of homogeneous acid catalyst. Zr-modified solid super acid S2O82--TiO2/ Fe3O4 was prepared as the catalyst for FAME production and the catalysis activity was studied by single-factor and orthogonal experiments. The results show that the esterification rate and product yield can realize to 94% and 90% respectively when the volume to mass ratio of methyl alcohol to acid is 3 mL/g, the reaction temperature is 65°C, the reaction time is 6 h, and the amount of catalyst is 12% of mass of fatty acid. The recovered catalyst can be reused effectively.
Number of references:11
Ei main heading:Acids
Ei controlled terms:Catalysis  -  Zirconium
Uncontrolled terms:Biodiesel  -  Fatty acid methyl ester  -  Solid catalyst  -  Technology optimization
Ei classification codes:549.3 Others, including Bismuth, Boron, Cadmium, Cobalt, Mercury, Niobium, Selenium, Silicon, Tellurium and Zirconium  -  802.2 Chemical Reactions  -  803 Chemical Agents and Basic Industrial Chemicals  -  804 Chemical Products Generally
Database:Compendex
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13.  Accession number:084211646811
Title:Preparing androstenones by microbial degradation of phytosterol in biphasic system
Authors:Yang, Ying; Jiang, Shaotong; Cao, Lili; Li, Yue
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 79-82 86
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The technology of obtaining androstenones (AD) from phytosterol by microbial degradation in biphasic systems and the effects of substrate concentration, surfactants and 9α-hydroxylase inhibitor on biotransformation were studied by experiment. The results show that sunflower oil-aqueous biphasic system is the most suitable for bioconversion, and the concentration of substrate and low-concentration of 9α-hydroxylase inhibitor can increase the rate of biotransformation to a certain extent. Finally, the sunflower oil-aqueous biphasic system of fermentation is optimized by orthogonal experiment, and the optimal condition is as following: systems with the concentration of 20% sunflower oil, 0.4% substrate and 0.005% HgCl2. Under this condition the transformation rate of AD is 83.4%.
Number of references:13
Ei main heading:Concentration (process)
Ei controlled terms:Biochemical engineering  -  Biodegradation  - Degradation  -  Mercury compounds  -  Substrates  -  Surface active agents  -  Vegetable oils
Uncontrolled terms:Androst-4-ene-3, 17-dione  -  Biphasic systems  - Microbial degradation  -  Phytosterol
Ei classification codes:461 Bioengineering and Biology  -  461.8 Biotechnology  -  712.1 Semiconducting Materials  -  714.2 Semiconductor Devices and Integrated Circuits  -  801 Chemistry  - 801.2 Biochemistry  -  802.2 Chemical Reactions  -  802.3 Chemical Operations  -  803 Chemical Agents and Basic Industrial Chemicals  - 804.1 Organic Compounds  -  804.2 Inorganic Compounds  -  805.1.1 Biochemical Engineering  -  813.1 Coating Techniques  -  822.3 Food Products
Database:Compendex
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14.  Accession number:084211646812
Title:Sensitivity comparison of acetylcholinesterase from different sources in rapid detection of organphosphorous pesticide residues
Authors:Wang, Xiaoyu; Sun, Xia; Wang, Xiangyou; Sun, Dongxia
Author affiliation:Shandong University of Technology, Zibo 255049, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 83-86
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The commercial acetylcholinesterase (AChE) from Musca domestica, and the acetylcholinesterase made by the researchers themselves from fowl liver and cyprinoids brain, were used for pesticides detection. The inhibition of AChE activity under different concentrations of omethoate, trichlorfon and dichlorvos were compared. The results show that the inhibition of AChE activity of Musca domestica is the highest of the three above. Three kinds of Acetylcholinesterase are not sensitive to omethoate. AChE from cyprinoids brain can be used for rapid detection of dichlorvos in the case of high detection precision is not needed. AChE from fowl liver can be used for rapid detection of trichlorfon.
Number of references:11
Ei main heading:Pesticides
Ei controlled terms:Liver
Uncontrolled terms:Acetylcholinesterase  -  Detection  -  Inhibition -  Pesticide residues
Ei classification codes:461.2 Biological Materials and Tissue Engineering  -  803 Chemical Agents and Basic Industrial Chemicals -  821.2 Agricultural Chemicals
Database:Compendex
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15.  Accession number:084211646814
Title:Canopy spectral reflectance feature of rice infected with Sogatella furcifera and insect number inversion
Authors:Qiu, Baijing; Chen, Guoping; Cheng, Qiwen
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 92-95 99
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The canopy hyperspectral reflectance data were recorded at the main harm stages of rice infected with Sogatella furcifera. Statistic multianalysis method was conducted on the correlation between canopy reflectance data and the Sogatella furcifera number of per hundred individual rice. Three bands, near infrared band 779 nm, 1685 nm and visible light band 558 nm, were confirmed being sensitive to insect pest of Sogatella furcifera. Combining two bands reflectance (779 nm and 558 nm) into vegetation indices of RVI (ratio vegetation index) and NDVI (normalized difference vegetation index), five single variables of linear function models against the Sogatella furcefera number were established based on sensitive bands, RVI and NDVI. The results show that the five types of function models have significant correlation if a = 0.01. The model established by using of the band 779 nm is optimal as using sensitive band and the correlation coefficient is 0.921. The model established by using of RVI is optimal as using vegetation index and the correlation coefficient is 0.802.
Number of references:10
Ei main heading:Vegetation
Ei controlled terms:Arid regions  -  Correlation methods  - Electromagnetic waves  -  Reflection
Uncontrolled terms:Canopy  -  Inversion  -  Rice  -  Sogatella furcifera  -  Spectral feature
Ei classification codes:443 Meteorology  -  444 Water Resources  - 461.9 Biology  -  525.1 Energy Resources and Renewable Energy Issues -  711 Electromagnetic Waves  -  741.1 Light/Optics  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  - 901.4 Impact of Technology on Society  -  922.2 Mathematical Statistics
Database:Compendex
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16.  Accession number:084211646815
Title:Distinguishing barnyard-grass from rice using spectrum analysis technology
Authors:Chen, Shuren; Li, Yixin; Mao, Hanping; Shen, Baoguo
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 96-99
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The spectral reflectance of rice and barnyard-grass was determined in the range from 350 to 2500 nm using the Analytical Spectral Device Full Range FieldSpec Pro (ASD) on laboratory. The discrimination analysis was carried out with the statistical software package SAS. The spectral reflectance at the green peak (555 nm) was chosen as denominator, and wavelength ratios were calculated as variables to discriminate. Wavelength ratios were selected using the STEPDISC procedure. With the selected variables, the discrimination models were developed using the DISCRIM procedure in SAS. Four wavelength ratios including 395/555, 535/555, 705/555 and 1105/555, were utilized to gain good classification performance (100% accuracy) for distinguishing barnyard-grass from rice. The ratio of spectral reflectance at 705 nm in the red edge to spectral
reflectance at 555 nm contributes more to the discrimination model.
Number of references:10
Ei main heading:Reflection
Ei controlled terms:Electromagnetic waves  -  Law enforcement  - Spectrum analyzers  -  Synthetic aperture sonar
Uncontrolled terms:Rice  -  Spectrum analysis  -  Weed discrimination  -  Spectral reflectances  -  Statistical software  - Red edge  -  Discrimination model  -  Classification performance  - Discrimination analysis
Ei classification codes:711 Electromagnetic Waves  -  741.1 Light/Optics  -  751.1 Acoustic Waves  -  752.1 Acoustic Devices  - 902.3 Legal Aspects  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  - 943 Mechanical and Miscellaneous Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  971 Social Sciences
Database:Compendex
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17.  Accession number:084211646816
Title:Image segmentation method for sugarcane diseases based on color and shape features
Authors:Zhao, Jinhui; Luo, Xiwen; Zhou, Zhiyan
Author affiliation:South China Agricultural University, Guangzhou 510642, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 100-103 133
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:An image segmentation algorithm for the sugarcane diseases was proposed according to the characteristics of the sugarcane seedling red rot disease and ring spot disease images. Firstly, non-green plants including diseased spots, soils etc. were extracted using the color features of 2G-R-B and 2R-G-B. Secondly, some connected regions of non-green plants including soils etc. were removed using the segmentation based on area threshold. Finally, the shape features for the remaining connected regions of non-green plants including diseased spots, soils etc. were calculated using chain code, and the diseased spots were extracted according to the width, rectangle degree and roundness of the connected regions. The experimental results showed that this algorithm could effectively extract red rot diseased spots and ring spot diseased spots, the accurate rate of image segmentation for ring spot diseases was 93%, the accurate rate of image segmentation for red rot diseases was 95%.
Number of references:8
Ei main heading:Image segmentation
Ei controlled terms:Boolean functions  -  Codes (symbols)  - Digital image storage  -  Image processing  -  Metal working shapers -  Soils
Uncontrolled terms:Color feature  -  Disease  -  Shape feature  - Sugarcane
Ei classification codes:483.1 Soils and Soil Mechanics  -  603.1 Machine Tools, General  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  - 722.1 Data Storage, Equipment and Techniques  -  722.4 Digital Computers and Systems  -  723.2 Data Processing and Image Processing -  741 Light, Optics and Optical Devices  -  741.1 Light/Optics  - 741.3 Optical Devices and Systems  -  921.1 Algebra
Database:Compendex
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18.  Accession number:084211646817
Title:Locust information extraction using hue and shape feature
Authors:Mao, Wenhua; Zheng, Yongjun; Yuan, Yanwei; Zhang, Xiaochao
Author affiliation:Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 104-107
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The locust detection and count method based on image processing was developed. The method was used to extract the number of locusts from color videos captured by a novel locust plague forecasting system with a super-low altitude helicopter. The color of locust is sandy beige, and the locusts' habitat is mainly composed of green leaves. Therefore, the region of locust was segmented at first from the habitat according to the color feature of the hue space. Then some single locusts were detected by the area and compactness of the segmented locust area, and the mean area of them was used to compute the number of locusts for the characteristic that the infestation locusts have generally same size. The experimental results showed that the precision of the number of locusts achieved 85%.
Number of references:9
Ei main heading:Feature extraction
Ei controlled terms:Color  -  Ecology  -  Image processing  -  Ocean habitats  -  Optical properties
Uncontrolled terms:Forecasting  -  Hue  -  Locust  -  Shape
Ei classification codes:454.3 Ecology and Ecosystems  -  472 Ocean Engineering  -  716 Telecommunication; Radar, Radio and Television -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  741 Light, Optics and Optical Devices  -  741.1 Light/Optics  -  751.1 Acoustic Waves
Database:Compendex
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19.  Accession number:084211646818
Title:Recognition of the stored-grain pests based on simulated annealing algorithm and support vector machine
Authors:Hu, Yuxia; Zhang, Hongtao
Author affiliation:Zhengzhou University, Zhengzhou 450001, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 108-111
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The design of the classifier is an important part for the image recognition system of the stored-grain pests. The simulated annealing algorithm (SAA) was proposed to optimize parameters C and g in the classifier based on support vector machine (SVM), and it was compared with the grid-search optimization. The results indicated that the optimizing efficiency was improved about 3.91 times, and the recognition ratio of the SVM classifier was raised by 5.56%. The nine species of the stored-grain pests in grain-depot were automatically recognized by the classifier based on simulated annealing algorithm and support vector machine, the correct recognition ratio was over 95.56%. The experimental results prove that the method is practical and feasible.
Number of references:10
Ei main heading:Simulated annealing
Ei controlled terms:Annealing  -  Boolean functions  -  Classifiers -  Grain (agricultural product)  -  Image recognition  -  Image retrieval  -  Learning systems  -  Machine design  -  Optimization -  Support vector machines   -  Vectors
Uncontrolled terms:Classification  -  Recognition  -  Stored-grain pests  -  Simulated annealing algorithm  -  Recognition ratio  - SVM classifiers  -  Grid-search
Ei classification codes:461.4 Ergonomics and Human Factors Engineering  -  537.1 Heat Treatment Processes  -  601 Mechanical Design  -  716 Telecommunication; Radar, Radio and Television  - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723 Computer Software, Data Handling and Applications  -  723.2 Data Processing and Image Processing  -  723.4 Artificial Intelligence  -  723.5 Computer Applications  -  731.5 Robotics  -  741 Light, Optics and Optical Devices  -  741.1 Light/Optics  -  751.1 Acoustic Waves  -  802.1 Chemical Plants and Equipment  -  821.4 Agricultural Products  -921 Mathematics  -  921.1 Algebra  -  921.5 Optimization Techniques
Database:Compendex
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20.  Accession number:084211646819
Title:Trajectory planning of tissue culture plantlet transplanting robot in transporting seedling
Authors:Yang, Li; Zhang, Tiezhong; Zhang, Kailiang
Author affiliation:China Agricultural University, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 112-117
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Aimed at different working courses of conveying and grasping plantlet, the method of using quintic polynomial in joint space and beeline in Cartesian coordinate space was adopted to plan the motion trajectory of the 5-DOF tissue culture plantlet transplanting robot. The robot could take out plantlet fleetly from culture bottle and not hit with the bottle at the same time. The mathematics model of the motion trajectory was established and the computer simulation on the motion trajectory of the robot was carried out. The simulated trajectory curves of the robot were smooth and successive, which could assure the robot working normally. The practical tests show that the robot can run according to the trajectory planning basically and the average warp is less
than 0.5 mm. It can realize the precision of transporting seedling.
Number of references:14
Ei main heading:Robots
Ei controlled terms:Computational methods  -  Computer simulation  - Mathematical models  -  Robotics  -  Tissue culture  -Trajectories
Uncontrolled terms:Robot  -  Tissue culture plantlet  -  Trajectory planning  -  Transplanting
Ei classification codes:404.1 Military Engineering  -  461.2 Biological Materials and Tissue Engineering  -  654.1 Rockets and Missiles  -  655.2 Satellites  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory -  723.5 Computer Applications  -  731.5 Robotics  -  731.6 Robot Applications  -  801.2 Biochemistry  -  921 Mathematics
Database:Compendex
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21.  Accession number:084211646820
Title:Numerical calculation and energy consumption analysis for air condition system driven by biogas engine
Authors:Xu, Zhenjun; Yang, Zhao
Author affiliation:Tianjin University, Tianjin 300072, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 118-121
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The heat pump air condition driven by biogas engine (BHPAC) is a new-style air condition system, which is composed of the heat  pump driven by biogas engine (BHP), the primary heat exchanger, the  second heat exchanger, the water spraying chamber and other auxiliary equipment such as fans, water pumps etc. The mathematic model including the primary heat exchanger model, the second heat exchanger model, the water spraying chamber model, the mixed air model and the BHP model, was established to study the BHPAC system. The primary energy ratio for air condition was defined to evaluate the performance of the air condition. The results show that the air condition driven by biogas engine can save more energy than the heat pump air condition driven by electricity engine. The saving primary energy percentage for BHP is 75% in summer, and the saving primary energy percentage for BHP is 71% in winter. The BHP with the wet processing can be used in more areas than the common BHP.
Number of references:11
Ei main heading:Energy conservation
Ei controlled terms:Auxiliary equipment  -  Biogas  -  Engines  - Heat exchangers  -  Heat pump systems  -  Mathematical models  - Numerical analysis  -  Pesticides  -  Pumps  -  Solar water heaters -  Spraying  -  Water analysis
Uncontrolled terms:Air condition system  -  Energy consumption analysis  -  Heat pump driven by biogas engine  -  Heat wet processing  -  Numerical calculation
Ei classification codes:445.2 Water Analysis  -  522 Gas Fuels  - 525.2 Energy Conservation  -  612 Engines  -  616.1 Heat Exchange Equipment and Components  -  617.3 Steam Engines  -  618.2 Pumps  -641.2 Heat Transfer  -  642.1 Process Heating  -  643.2 Space Heating Equipment and Components  -  654.2 Rocket Engines  -  657.1 Solar Energy and Phenomena  -  801 Chemistry  -  803 Chemical Agents and Basic Industrial Chemicals  -  813.1 Coating Techniques  - 821.2 Agricultural Chemicals  -  821.5 Agricultural Wastes  -  901 Engineering Profession  -  921 Mathematics  -  921.6 Numerical Methods
Database:Compendex
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22.  Accession number:084211646821
Title:Product optimizing configuration method oriented green design
Authors:Zhang, Lei; Liu, Guangfu; Liu, Zhifeng; Huang, Haihong
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 122-128
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Targeting on optimizing green performance of configurable product, taking environment performance into consideration of product configuration design, a green design oriented product optimizing configuration method was given based on product family function-structure mapping. The quantified analysis was given to green performance of product family inner structure unit from four aspects: disassembly performance, recycle performance, lifespan and environmental influence. On the foundation of standardizing quantified results, targeting on the optimized green performance of configurable product, an optimized mathematic model was established and the corresponding algorithm was given. Finally, the configuration and design of spindle box of a vertical milling machine was exemplified to validate the method.
Number of references:7
Ei main heading:Structural design
Ei controlled terms:Design  -  Machine design  -  Mathematical models  -  Milling (machining)  -  Optimization  -  Product design
Uncontrolled terms:Green design  -  Product configuration  - Product family  -  Optimizing configuration  -  Green designs  - Configurable  -  Product families  -  Mathematic modeling  - Environmental influences  -  Life spans   -  Inner structures  - Quantified analysis  -  Vertical milling  -  Product configuration design
Ei classification codes:408 Structural Design  -  408.1 Structural Design, General  -  601 Mechanical Design  -  604.2 Machining Operations  -  902.1 Engineering Graphics  -  913.1 Production Engineering  -  921 Mathematics  -  921.5 Optimization Techniques
Database:Compendex
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23.  Accession number:084211646822
Title:Grey robust optimization design of high dimension multi-objective with hybrid discrete variables
Authors:Luo, Youxin; Liao, Degang; Che, Xiaoyi; Liu, Qiyuan
Author affiliation:Hu'nan University of Arts and Science, Changde 415000, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 129-133
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:A method for robust design was presented based on sensitivity analysis with hybrid discrete variables, and two multi-objective robust optimization design models were established for robust optimization design based on adjunctive function of sensibility analysis. The models were solved with absolute degree of grey incidences. The models and method could reasonably deal with
value adopting problems of hybrid discrete variables in optimization design. A chaos emigration operator was introduced to carry out improvement on the fundamental genetic algorithm, and the grey compound genetic algorithmic program GSCHGA for the multi-objective optimization of hybrid discrete variables was developed. Finally, the engineering design example shows that this algorithm has no special requirements on the characteristics of optimal designing problems, good universal adaptability, reliable operation of program, and strong ability of overall convergence.
Number of references:16
Ei main heading:Optimization
Ei controlled terms:Boolean functions  -  Design  -  Genetic algorithms  -  Multiobjective optimization  -  Sensitivity analysis -  Time varying systems
Uncontrolled terms:Absolute degree of grey incidences  -  Hybrid discrete variables  -  Robust design  -  Discrete variables  - Multi objectives  -  Robust optimization  -  Engineering designs  -Optimization designs  -  Sensibility analysis  -  Reliable operations   -  Robust designs  -  High dimensions
Ei classification codes:408 Structural Design  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  902.1 Engineering Graphics  -  921 Mathematics  -  921.1 Algebra  -  921.5 Optimization Techniques  -  961 Systems Science
Database:Compendex
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24.  Accession number:084211646823
Title:Optimization design of particle swarm with self-adaptive parameter adjusting
Authors:Liu, Daohua; Yuan, Sicong; Zhang, Jinhua; Wu, Tao
Author affiliation:Xinyang Normal University, Xinyang 464000, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 134-137 143
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:This paper introduced the simulated annealing mechanism into the particle swarm optimization. In the method, only a part of particles were involved in the speed and location renewal operation with certain probability. Two fuzzy logic controllers about inertia and learning factor were built in order to improve convergence speed and obtain global optimal solution. The optimization results of the main beam cross-section for crane structure from conventional optimization method, genetic algorithm and particle swarm optimization, were compared with one another. The comparison analysis indicates that the proposed particle swarm optimization method based on fuzzy logic parameter adjusting has advantages such as better self-adaptive capacity, higher computation efficiency and design accuracy.
Number of references:6
Ei main heading:Simulated annealing
Ei controlled terms:Annealing  -  Fuzzy logic  -  Fuzzy sets  - Fuzzy systems  -  Genetic algorithms  -  Machine design  -  Optical communication  -  Optimization  -  Particle swarm optimization (PSO) -  Risk assessment   -  Speed  -  Structural optimization
Uncontrolled terms:Fuzzy logic controller  -  Particle swarm optimization  -  Self-adaptive parameter adjusting  -  Simulated annealing algorithm
Ei classification codes:537.1 Heat Treatment Processes  -  601 Mechanical Design  -  717.1 Optical Communication Systems  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723 Computer Software, Data Handling and Applications  -  723.4 Artificial Intelligence  -  731.1 Control Systems  -  914.1 Accidents and Accident Prevention  -  921 Mathematics  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  921.5 Optimization Techniques  -  922.1 Probability Theory  -  931.1 Mechanics  -  961 Systems Science
Database:Compendex
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25.  Accession number:084211646824
Title:Experiment on reduction of soil adhesion force and sliding resistance of earthworm non-smooth surface
Authors:Liu, Guomin; Li, Jianqiao; Tian, Ximei; Zou, Meng; Li, Yinwu
Author affiliation:Jilin University, Changchun 130025, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 138-143
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Taking earthworm (Eisenia foetida) as the study object, six surface specimens including motionless, extending and shrinking of the forehead and body were prepared according as its movement characteristic. The soil adhesion force and sliding resistance experiments of earthworm non-smooth surface specimens and steel specimen were conducted on via a tiny adhesion testing system. The results showed that the shrinking specimen had best reducing soil adhesion force and sliding resistance ability, then were motionless specimen and the extending specimen respectively. The forehead sample had better reducing soil adhesion force and sliding resistance ability than the body sample. In the test condition, the soil adhesion force and sliding resistance of the forehead sample were 25% and 61% of that of the steel specimen respectively. The soil adhesion force and sliding resistance of the body sample were 44% and 71% of that of the steel specimen respectively.
Number of references:13
Ei main heading:Soil testing
Ei controlled terms:Adhesion  -  Codes (symbols)  -  Shrinkage  - Soils  -  Steel testing  -  Steel  -  Surface testing
Uncontrolled terms:Bionics  -  Earthworm  -  Experiment  - Non-smooth  -  Reducing adhesion and resistance
Ei classification codes:421 Strength of Building Materials; Mechanical Properties  -  422.2 Test Methods  -  423.2 Test Methods-  483.1 Soils and Soil Mechanics  -  537.1 Heat Treatment Processes -  545.3 Steel  -  723.2 Data Processing and Image Processing  - 801 Chemistry  -  931.2 Physical Properties of Gases, Liquids and Solids  -  951 Materials Science
Database:Compendex
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26.  Accession number:084211646825
Title:Mechanism design and kinematic analysis on a three rotation degree-of-freedom spatial parallel manipulator
Authors:Cui, Guohua; Wang, Guoqiang; Zhao, Chunjiang; Gao, Weixian
Author affiliation:Jilin University, Changchun 130025, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 144-148
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:According to the theories of the structure synthesis of parallel robot mechanisms, a new 3-DOF parallel manipulator with 3-rotation was synthesized and investigated. The manipulator consists of a moving platform, a fixed base, four kinematic chains of UPS and a restricted support chain. One of the four UPS legs is passive whereas each of the remaining three legs is driven by a linear actuator. To gain better understanding of the mechanisms, a methodology for analyzing the kinematics of such manipulator was presented subsequently. Finally, a case of a tunnel erecter mechanical arm was used as an example to illustrate the methodology.
Number of references:7
Ei main heading:Machine design
Ei controlled terms:Kinematics  -  Manipulators  -  Mechanisms  - Power supply circuits  -  Rotation  -  Ultraviolet spectroscopy  -
Uninterruptible power systems
Uncontrolled terms:3-DOF  -  Kinematic analysis  -  Mechanism design -  Parallel manipulator  -  Tunnel erecter
Ei classification codes:601 Mechanical Design  -  601.1 Mechanical Devices  -  601.3 Mechanisms  -  691.1 Materials Handling Equipment -  703.1 Electric Networks  -  706.1 Electric Power Systems  - 713.5 Other Electronic Circuits  -  731.5 Robotics  -  801 Chemistry -  931.1 Mechanics  -  931.3 Atomic and Molecular Physics  -  932.2 Nuclear Physics
Database:Compendex
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27.  Accession number:084211646826
Title:Design of three-degree of freedom parallel machine tool with ultrasonic vibration drilling device
Authors:Wang, Lei; Wang, Guicheng; Zhong, Donghua; Ma, Luzhong
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 149-152
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Based on high frequency vibration cutting theory, a kind of three-degree of freedom (3-DOF) parallel machine tool with ultrasonic longitudinal vibration drilling device for micro holes was designed, which was composed by ultrasonic longitudinal vibration drilling device and 3-DOF parallel machine tool. The results show that high rotary and feed movement of machine tool can be achieved easily, which afford advantageous condition to precision and ultra-precision machining of micro holes in all soft materials. It can improve the machining accuracy and surface quality of micro holes.
Number of references:8
Ei main heading:Drilling
Ei controlled terms:Lattice vibrations  -  Machine design  - Machine tools  -  Machinery  -  Machining  -  Precision engineering -  Tools  -  Ultrasonics  -  Vibrations (mechanical)
Uncontrolled terms:Design  -  Parallel machine tool  -  Ultrasonic machining  -  Vibration drilling
Ei classification codes:601 Mechanical Design  -  603 Machine Tools -  603.1 Machine Tools, General  -  604.2 Machining Operations  - 605 Small Tools and Hardware  -  714.2 Semiconductor Devices and Integrated Circuits  -  741.3 Optical Devices and Systems  -  753.1 Ultrasonic Waves  -  761 Nanotechnology  -  902.2 Codes and Standards  -  931.1 Mechanics  -  933.1.1 Crystal Lattice
Database:Compendex
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28.  Accession number:084211646827
Title:Robotic kinematics parameters error identification based on genetic algorithm
Authors:Zhang, Yonggui; Huang, Yumei; Gao, Feng
Author affiliation:Lanzhou University of Technology, Lanzhou 730050, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 153-157
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Aimed at the tedious error modeling and parameters identification in the process of robot calibration, establishing parameter error equations directly based on relative distance error using the kinematics model considering the parameters error was proposed. The hybrid genetic algorithm was adopted to solve the equations. As the given calculation example, the feasibility of identification parameters error using different measured data (complete distance info or incomplete distance info) was analyzed by numerical simulation. The results show that the robotic kinematics parameters error can be obtained if the data were measured enough. This result provides a theoretic support for using of incomplete distance measuring method in robot calibration process.
Number of references:10
Ei main heading:Identification (control systems)
Ei controlled terms:Algorithms  -  Boolean functions  -  Calibration -  Computer simulation  -  Flight dynamics  -  Genetic algorithms-  Kinematics  -  Mathematical models  -  Mechanics  -  Parameter estimation   -  Robotics  -  Robots
Uncontrolled terms:Distance error  -  Error identification  - Genetic algorithm  -  Robot
Ei classification codes:652.1 Aircraft, General  -  654.1 Rockets and Missiles  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  723 Computer Software, Data Handling and Applications  -  723.5 Computer Applications  -  731.1 Control Systems  -  731.5 Robotics  -  731.6 Robot Applications  -  902.2 Codes and Standards  -  921 Mathematics -  921.1 Algebra  -  931.1 Mechanics  -  941 Acoustical and Optical Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
Database:Compendex
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29.  Accession number:084211646828
Title:Application of genetic algorithm on optimization of high power beam cutting paths
Authors:Sun, Huiping; Li, Jian; Guo, Weigang
Author affiliation:Ningbo Polytechnic, Ningbo 315800, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 158-160 165
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:It is a basically problem to optimize the cutting paths for increasing the efficiency of high power beam cutting. The optimization of cutting paths is different from the traditional traveling salesman problem (TSP) on the limitation that a local circle in cutting paths should be cut in a certain order. A transformation method for optimization problem of cutting paths to TSP was introduced to solve this problem, and the TSP was solved by genetic algorithm. The optimum results for the TSP can be transformed back to the solution for optimization of cutting paths. The numerical simulated results show that this method is effective on optimization of high power beam cutting paths.
Number of references:11
Ei main heading:Traveling salesman problem
Ei controlled terms:Algorithms  -  Boolean functions  -  DC generators  -  Genetic algorithms  -  Mathematical transformations-  Optimization  -  Problem solving
Uncontrolled terms:Genetic algorithm  -  High power beam cutting  - Optimization of cutting paths  -  High powers  -  Simulated results-  Optimiz ation problems  -  Transformation method  -  Traveling salesman
Ei classification codes:705.2.2 DC Generators  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory,Programming Theory  -  723 Computer Software, Data Handling and Applications  -  723.4 Artificial Intelligence  -  912.3 Operations Research  -  921 Mathematics  -  921.1 Algebra  -  921.3 Mathematical Transformations  -  921.5 Optimization Techniques
Database:Compendex
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30.  Accession number:084211646829
Title:Modeling and virtual machining of chamfering tooth crest of spiral bevel gear
Authors:Xu, Yanwei; Xiao, Tieling; Wei, Wei; Liu, Dequan; Zhang, Lianhong
Author affiliation:Tianjin University, Tianjin 300072, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 161-165
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Chamfering tooth crest of spiral bevel gears can effectively relieve stress concentration and reduce noise when spiral bevel gears are meshed, it can also extend service life and increase transmission stability of spiral bevel gears. A model of tool's track on chamfering tooth crest of the bull spiral bevel gear was proposed based on analysis of the mechanism for chamfering tooth crest of the bull spiral bevel gear. The NC machine tool and virtual simulation machining models for chamfering the bull spiral bevel gear were carried out with VERICUT. The models of tool's track and virtual simulation machining were verified by virtual simulation chamfering tooth crest on one given bull spiral bevel gear with the tool's track calculated by Matlab. The measuring results indicate that the model of virtual simulation machining for chamfering the bull spiral bevel gear can meet the design requirements.
Number of references:7
Ei main heading:Bevel gears
Ei controlled terms:Computer simulation  -  Concentration (process)-  Dentistry  -  Gears  -  MATLAB  -  Machinery  -  Machining  -Stress concentration
Uncontrolled terms:Spiral bevel gear  -  Tooth crest chamfering  - Virtual machining  -  Spiral bevel gears  -  Virtual simulations  - Design requirements  -  Machining modelling
Ei classification codes:421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  461.1 Biomedical Engineering  -  461.6 Medicine and Pharmacology  -  462.3 Dental Equipment and Supplies  - 601 Mechanical Design  -  601.2 Machine Components  -  604.2 Machining Operations  -  723.1.1 Computer Programming Languages  - 723.5 Computer Applications  -  802.3 Chemical Operations  -  921 Mathematics
Database:Compendex
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31.  Accession number:084211646830
Title:Numerical simulation and optimization of aluminum alloy auto panel forming by multivariate nonlinear regressing
Authors:Zhao, Maoyu; Xue, Kemin; Li, Ping
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 166-169 186
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Based on the three-parameter Barlat-Lian yield criteria, the aluminum alloy auto panel strength beam forming was simulated by Dynaform software. The data of max equivalent stress and max thinning were acquired by designing the draw bead section punch radius and the draw bead depth. The mathematics model between max equivalent stress, max thinning and draw bead section punch radius, draw bead depth, was built by multivariate nonlinear regressing. The multivariate nonlinear objective model was transformed into single objective model using the weighting function method, then the mathematics model was optimized and the optimized draw bead section values were obtained. Finally, the auto panel was simulated again based on the optimized result and the simulated results showed that the result was available.
Number of references:9
Ei main heading:Mathematical models
Ei controlled terms:Alloys  -  Alumina  -  Aluminum alloys  - Aluminum metallurgy  -  Computer simulation  -  Light metals  - Mathematical techniques  -  Optimization  -  Soldered joints
Uncontrolled terms:Aluminum alloy  -  Auto panel  -  Draw bead  - Multivariate nonlinear regressing  -  Numerical simulation  - Single objective optimization
Ei classification codes:531.1 Metallurgy  -  538.1.1 Soldering  - 541.1 Aluminum  -  541.2 Aluminum Alloys  -  542.1 Beryllium and Alloys  -  542.2 Magnesium and Alloys  -  542.3 Titanium and Alloys -  723.5 Computer Applications  -  804.2 Inorganic Compounds  - 812.1 Ceramics  -  921 Mathematics  -  921.5 Optimization Techniques
Database:Compendex
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32.  Accession number:084211646831
Title:Influence of non-linear weld line arrangement on laser tailor-welded blanks forming performances
Authors:Chen, Wei; Li, Weiguo; Yang, Jichang; Zhang, Jiahua
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 170-173
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Four different non-linear weld lines were arranged on the box with laser tailor-welded blanks (LTWBs) with different thicknesses, and the formability of box with LTWBs based on different arrangements of non-linear weld line was studied by means of dynamic explicit finite element method. The simulated results demonstrate that different arrangements of non-linear weld line have important effect on the weld line movement of LTWBs box and deformation of connecting region of the weld line. The weld line movement on the flange of the box is validated by experiment. The simulated results are in good agreement with the experimental results.
Number of references:10
Ei main heading:Welding
Ei controlled terms:Finite element method  -  Laser beam welding  - Welding machines  -  Welds
Uncontrolled terms:Formability  -  Laser tailor-welded blanks  - Non-linear weld line  -  Weld lines  -  Non-linear  -  Tailor-welded blanks  -  Simulated results  -  Dynamic explicit finite element method
Ei classification codes:538.2 Welding  -  538.2.1 Welding Processes -  538.2.2 Welding Equipment  -  744.9 Laser Applications  -  921.6 Numerical Methods
Database:Compendex
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33.  Accession number:084211646832
Title:Contact angular calculation and analysis of high-speed angular contact ball bearing
Authors:Wang, Baomin; Mei, Xuesong; Hu, Chibing; Wu, Zaixin
Author affiliation:Lanzhou University of Technology, Lanzhou 730050, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 174-178
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Based on the elastic theory, dynamics and raceway control theory of the rolling bearing, inner ring radial displacement of angular contact ball bearing caused by centrifugal force was calculated. In consideration of inner ring radial displacement, interference fit and preload, the comprehensive method and its corresponding program were given for calculating the contact angular of angular contact ball bearing during high-speed rotating. The calculated results taking 7012/CD bearing as an example show that because of inner ring centrifugal displacement, inner contact angular tend to decrease and the decrease of outer contact angular tend to slow with the increase of rotation speed when its rotation speed exceed a certain number; axial preload can restraint the variation of contact angular with the rotation speed; the interference fit has no effect on this variation of contact angular.
Number of references:12
Ei main heading:Bearings (structural)
Ei controlled terms:Ball bearings  -  Bearings (machine parts)  - Control theory  -  Rotation  -  Speed
Uncontrolled terms:Angular contact ball bearing  -  Contact angular -  Effect factor  -  Angular contact ball bearings  -  Inner rings -  Rotation speeds  -  High speeds  -  Radial displacements  - Interference fits  -  Comprehensive method   -  Preload  -  Axial preload  -  Centrifugal Forces  -  Rolling bearings  -  Elastic theory
Ei classification codes:401.1 Bridges  -  408.2 Structural Members and Shapes  -  601.1 Mechanical Devices  -  601.2 Machine Components-  731.1 Control Systems  -  931.1 Mechanics
Database:Compendex
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34.  Accession number:084211646833
Title:Non-conservative fussy reliability design of automobile back-axle housing
Authors:Wang, Tie; Wu, Jing; Zhou, Shuwen; Zhang, Guozhong
Author affiliation:Shenyang Ligong University, Shenyang 110168, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 179-182
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Considering safety and lightening of intensity, the non-conservative fuzzy reliability design formulas about automobile back-axle housing were deduced by integrating probability density and function density. The forces, intensities and geometry dimension of component etc. are normal distribution, and subordinate is parabola of exponential k. Firstly, the integral change was achieved according to initial data, function imported and extent of integrated. Secondly, the number result about the non-conservative fuzzy reliability design of automobile back-axle housing with VB program in the computer was achieved by using middle-points integral calculus and Romberg integration. The results show that this program can be used in design of automobile back-axle housing for rising up level of design.
Number of references:11
Ei main heading:Probability density function
Ei controlled terms:Axles  -  Design  -  Differential equations  - Housing  -  Integral equations  -  Integration  -  Normal distribution  -  Probability distributions  -  Reliability  -Wheels
Uncontrolled terms:Automobile  -  Back-axle housing  -  Fussy  - Non-conservative design
Ei classification codes:403.1 Urban Planning and Development  -  408 Structural Design  -  421 Strength of Building Materials; Mechanical Properties  -  601.2 Machine Components  -  662.4 Automobile and Smaller Vehicle Components  -  663.2 Heavy Duty Motor Vehicle Components  -  682.1.1 Railroad Cars  -  902.1 Engineering Graphics -  913.3 Quality Assurance and Control  -  921 Mathematics  -  921.2 Calculus  -  922.1 Probability Theory  -  922.2 Mathematical Statistics
Database:Compendex
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35.  Accession number:084211646834
Title:On-line monitor technology of micro-hole drilling based on electrical current of the principal axis electromotor
Authors:Li, Xue; Yang, Zhaojun; Jia, Qingxiang; Sun, Yanhong
Author affiliation:Nanjing Institute of Technology, Nanjing 211167, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 183-186
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:This paper studied the on-line monitor of micro-hole drilling based on electrical current of the principal axis electromotor. Taking 50 high speed steel twist drills with the diameter of 0.5 mm as the samples, the high-point voltage value corresponding to electrical current of the principal axis
electromotor was monitored when the micro-drill was broken during drilling H62 brass. Through parameters estimating and tentative proving, the results that the high-point voltage value obeys three parameters Weibull distribution were gained, and the access method of the monitored voltage thresholds corresponding to electrical current of the principal axis electromotor was built up. Finally, the experiments of on-line monitoring were carried out with different reliable levels. The results showed that the drill breaking ratio of decreased from 40% to 0 when reliable level was selected to be 0.99 and the drill utilization ratio was the same.
Number of references:5
Ei main heading:Drills
Ei controlled terms:Drilling  -  Parameter estimation  -  Weibull distribution
Uncontrolled terms:Current of the principal axis electromotor  - Micro-hole drilling  -  On-line monitoring  -  Principal axis  -Electrical current  -  Micro holes  -  Access methods  -  Weibull  - Three parameters  -  Micro drills   -  High-speed steel
Ei classification codes:603.2 Machine Tool Accessories  -  604.2 Machining Operations  -  731.1 Control Systems  -  922.2 Mathematical Statistics
Database:Compendex
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36.  Accession number:084211646794
Title:Simulation on NOx emission of dual-fuel engine based on fractal theory
Authors:Tang, Dong; Yin, Mingqiang; Lai, Chaofeng; Luo, Fuqiang
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 1-5 14
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:A quasi-dimensional combustion model for a dual-fuel engine was developed based on a double-zone fuel spray entrainment model, which uses fractal theory to describe the geometry of flamelets in turbulent combustion and its propagation as well as its emission performance. The double-zone fuel spray entrainment model is consisted of ignition delay model, fuel spray and air entrainment model, and flame propagation model. Subsequently, the simulation for combustion processes in a biogas diesel dual-fuel engine was conducted on to forecast its NOx emission characteristics. The relative error between the simulated results and experimental data is no more than 5%. The NOx emission of the biogas diesel dual-fuel engine increases with the increase of pilot fuel quantity and the advancement of fuel delivery advance angle.
Number of references:12
Ei main heading:Air entrainment
Ei controlled terms:Biogas  -  Combustion  -  Flammability  -  Fluid mechanics  -  Fuels  -  Ignition  -  Leakage (fluid)  -  Pesticides-  Smoke  -  Spraying   -  Thermochemistry
Uncontrolled terms:Dual-fuel engine  -  Emission  -  Fractal  - Simulation
Ei classification codes:451.1 Air Pollution Sources  -  452.1 Sewage -  452.3 Industrial Wastes  -  483.1 Soils and Soil Mechanics  - 521.1 Fuel Combustion  -  521.4 Flame Research  -  522 Gas Fuels  - 523 Liquid Fuels  -  524 Solid Fuels  -  619.1 Pipe, Piping and Pipelines  -  631.1 Fluid Flow, General  -  641.1 Thermodynamics  - 801.3 Colloid Chemistry  -  801.4 Physical Chemistry  -  802.3 Chemical Operations  -  803 Chemical Agents and Basic Industrial Chemicals  -  804 Chemical Products Generally  -  813.1 Coating Techniques  -  821.2 Agricultural Chemicals  -  821.5 Agricultural Wastes  -  914.2 Fires and Fire Protection  -  931.1 Mechanics
Database:Compendex
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37.  Accession number:084211646795
Title:Experiment on blended combustion of dimethyl ether (DME) with diesel
Authors:Zhu, Changji; Li, Jun; Gao, Ying; Yang, Tao
Author affiliation:Jilin University, Changchun 130025, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 6-9
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:An experimental study on blended combustion for dimethyl ether (DME) with diesel was carried out for a 4-cylinder diesel engine. DME was premixed with air through a mixer and then was entered the cylinder. Diesel was supplied by original fuel system. The experimental results show that the auto-ignition is advanced with more DME and the pre-ignition is obvious, which leads to the engine operation roughness and combustion deterioration. When the ignition inhibitor (LPG) added into DME is exceeded 30%, it can retard the auto-ignition and control the start of combustion effectively.
Number of references:6
Ei main heading:Ignition
Ei controlled terms:Combustion  -  Cylinders (shapes)  -  Diesel engines  -  Engine cylinders  -  Ethers  -  Experiments  -  Organic compounds  -  Smoke  -  Synthetic fuels  -  Thermochemistry
Uncontrolled terms:Combustion performance  -  Dimethyl ether  - Dual-fuel engine  -  Experiment
Ei classification codes:408.2 Structural Members and Shapes  - 451.1 Air Pollution Sources  -  521.1 Fuel Combustion  -  522 Gas Fuels  -  523 Liquid Fuels  -  524 Solid Fuels  -  612.1.1 Internal Combustion Engine Components  -  612.2 Diesel Engines  -  641.1 Thermodynamics  -  801.3 Colloid Chemistry  -  801.4 Physical Chemistry  -  804 Chemical Products Generally  -  804.1 Organic Compounds  -  901.3 Engineering Research
Database:Compendex
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38.  Accession number:084211646796
Title:Estimation of combustion status in diesel engine based on vibration signal
Authors:Cheng, Yong; Wu, Yalan; Ji, Shaobo; Tang, Juan; Yang, Bin; Huang, Wanyou
Author affiliation:Shandong University, Ji'nan 250061, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 10-14
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The vibration signal generated by combustion in diesel engine can be converted from one-dimensional time domain signal to a two-dimensional time-frequency domain using S-transform and time-frequency domain, which contains richer information of combustion status. A FIR band-pass filter was designed according to the frequency range of the time-frequency domain. The vibration signals generated by combustion in different combustion statuses were passed through the band-pass filter and the filtered signal had well relation with combustion status. A sample bank could be built using the filtered signals. The similar degree between the measured signal and the templates were calculated and the combustion status of the diesel engine was estimated according to the peak magnitude of similar degree. Finally, the simulated results show that the method is feasible.
Number of references:8
Ei main heading:Frequency estimation
Ei controlled terms:Combustion  -  Diesel engines  -  Diesel locomotives  -  Frequency domain analysis  -  Lattice vibrations  - Machine vibrations  -  Smoke  -  Thermochemistry  -  Vibrations (mechanical)  -  Wave filters
Uncontrolled terms:Combustion status  -  Diesel engine  -  Pattern recognition  -  S-transform  -  Vibration signal
Ei classification codes:451.1 Air Pollution Sources  -  521.1 Fuel Combustion  -  601.3 Mechanisms  -  612.2 Diesel Engines  -  641.1 Thermodynamics  -  682.1.2 Locomotives  -  703.1.1 Electric Network Analysis  -  703.2 Electric Filters  -  716.1 Information Theory and Signal Processing  -  731.1 Control Systems  -  751 Acoustics, Noise. Sound  -  801.3 Colloid Chemistry  -  801.4 Physical Chemistry  -  804 Chemical Products Generally  -  921.3 Mathematical Transformations  -  931.1 Mechanics  -  933.1.1 Crystal Lattice
Database:Compendex
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39.  Accession number:084211646797
Title:Design of EGR electronic control system for diesel
Authors:Peng, Meichun; Huang, Hua; Hu, Qiang
Author affiliation:Guangdong University of Technology, Guangzhou 510090, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 15-19
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:EGR electronic control system for diesel DL190-12 was developed. The hardware and software of EGR electronic control system was designed respectively. The design of hardware includes the ECU design, data signal acquisition processing circuit design, implementing agencies drive circuit design and display circuit design. The design of control software is modular. The engine table tests showed that NOx emission of the ethanol-diesel blend fuel engine DL190-12 equipped with the EGR was reduced by 50%-90% than that of the original diesel.
Number of references:7
Ei main heading:Control systems
Ei controlled terms:Concurrency control  -  Control system analysis -  Data processing  -  Design  -  Electronics industry  - Industrial electronics  -  Integrated circuit manufacture  - Networks (circuits)  -  Power electronics  -  Remote control   - Servomechanisms  -  Signal processing
Uncontrolled terms:Diesel  -  Electronic control system  -  Exhaust gas recycle  -  Electronic control systems  -  Circuit designs  - Drive circuits  -  Table tests  -  Control software  -  Data signals -  Hardware and software
Ei classification codes:408 Structural Design  -  703.1 Electric Networks  -  705 Electric Generators and Motors  -  712 Electronic and Thermionic Materials  -  713 Electronic Circuits  -  713.5 Other Electronic Circuits  -  714 Electronic Components and Tubes  - 714.2 Semiconductor Devices and Integrated Circuits  -  715 Electronic Equipment, General Purpose and Industrial  -  715.2 Industrial Electronic Equipment  -  716 Telecommunication; Radar, Radio and Television  -  716.1 Information Theory and Signal Processing  -  723.2 Data Processing and Image Processing  -  723.3 Database Systems  -  731.1 Control Systems  -  731.3 Specific Variables Control  -  732.1 Control Equipment  -  902.1 Engineering Graphics
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
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40.  Accession number:084211646798
Title:Gasoline engine knocking control system design and judgment technology
Authors:Zhong, Xianglin; Yu, Xiumin; Gao, Lei; Liang, Jingjing
Author affiliation:China Automotive Technology and Research Center, Tianjin 300162, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 20-23
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:A common used non-resonance piezoelectric knock sensor based on body vibration principle was studied. The knocking signal was processed using knocking signal processing chip HIP9011 and ATmegal6L microprocessor under the control of main singlechip 80C196KC. Moreover, a knocking judgment method was studied based on HIP9011 and knocking judgment procedure was designed. The results prove that processing knocking signal using HIP9011 and further actualizing knocking feedback control is feasible. The method can satisfy the demand of engine ignition and management system to the knocking check.
Number of references:7
Ei main heading:Control systems
Ei controlled terms:Liquid fuels  -  Petroleum products  -  Sensor networks  -  Signal processing
Uncontrolled terms:Control system  -  Engines  -  Judgment  - Knocking
Ei classification codes:513.3 Petroleum Products  -  523 Liquid Fuels  -  716.1 Information Theory and Signal Processing  -  731.1 Control Systems  -  732 Control Devices
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
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41.  Accession number:084211646835
Title:Application of HHT for modal parameters identification to cantilever beam structure
Authors:Wang, Hui; Liu, Zhengshi; Chen, Enwei; Bi, Rong; Liu, Huanjin
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 187-191 202
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The practical application of Hilbert-Huang transformation (HHT) method for structural modal parameters identification to a cantilever beam was investigated according to measured data of the acceleration response time histories for the cantilever beam under impulse excitation. The natural frequencies and modal damping ratios of the cantilever beam were identified using HHT method in combination with measured data. The identification results for the natural frequencies were compared with theoretical natural frequencies and those provided by the power spectrum method. Finally, the identification results for the modal damping ratios were compared with those provided by the half-power bandwidth method, the ZOOM FFT method and the time history decaying method, separately. The results demonstrate that HHT method is effective, robust and promising to structural parameters identification. Some problems of HHT method, such as it can not identify full modes and maybe identify "false modes", are found.
Number of references:11
Ei main heading:Identification (control systems)
Ei controlled terms:Cantilever beams  -  Composite beams and girders -  Damping  -  Earthquake resistance  -  Interactive devices  - Modal analysis  -  Natural frequencies  -  Pile foundations  -Power spectrum
Uncontrolled terms:Data processing  -  Hilbert-Huang transformation -  Modal parameters identification  -  Modal damping ratios  - Measured data  -  Impulse excitations  -  Acceleration responses  -  Power spectrum method  -  FFT method  -  Time history   - Structural parameters  -  Cantilever beam structure
Ei classification codes:405.2 Construction Methods  -  408 Structural Design  -  408.2 Structural Members and Shapes  -  412 Concrete  -  483 Soil Mechanics and Foundations  -  483.2 Foundations  -  484.3 Earthquake Resistance  -  711 Electromagnetic Waves  -  711.1 Electromagnetic Waves in Different Media  -  722.2 Computer Peripheral Equipment  -  731.1 Control Systems  -  741.1 Light/Optics  -  751.1 Acoustic Waves  -  921 Mathematics  -  931.1 Mechanics  -  941 Acoustical and Optical Measuring Instruments
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.
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42.Accession number:084211646813
Title:Visualization modeling on plant petal based on plane deformation
Authors:Lu, Ling; Wang, Lei; Yang, Yong; Song, Wenlin
Author affiliation:East China Institute of Technology, Fuzhou 344000, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 9
Issue date:September 2008
Publication year:2008
Pages:p 87-91
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:A simple modeling method for plant petal was presented. The modeling process could be realized easily. The initial shape of the model was a rectangle surface. A variety of deformation functions were adopted to change rectangle outline and approach petal outline. The surface-position vector of plane surface was modified by adding a perturbation function. The geometric shape of petal was obtained from curved surface and concave-convex texture. The combination of some basic functions was applied to the color simulation of the petal. The results show that the various plant petal modes can be designed quickly using the method, the shape and color of the petal can vary continuously, and the growth model can be built easily.
Number of references:7
Database:Compendex
Compilation and indexing terms, ? 2008 Elsevier Inc.