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2010年第41卷第12期共收录45篇
1. Accession number: 20110313600482
Title: Mechanization of citrus production
Authors: Hong, Tiansheng1 ; Yang, Zhou1 ; Song, Shuran1 ; Zhu, Yuqing1 ; Yue, Xuejun1 ; Su, Jian1
Author affiliation: 1 Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
Corresponding author: Hong, T. (tshong@scau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 105-110
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: China is one of the main producers of citrus in the world. The machinery and technologies for citrus production in some developed countries were studied from some key points, such as irrigation, fertilization, spraying, pruning, harvesting and conveying. Based on the analysis of domestic citrus production status and overseas developing experiences, the basic ideas and main technologies of mechanization for citrus production in China were discussed.
Number of references: 30
Main heading: Machinery
Controlled terms: Irrigation - Mechanization
Uncontrolled terms: Basic idea - Citrus - Citrus production - Developed countries - Keypoints
Classification code: 601 Mechanical Design - 821.3 Agricultural Methods
DOI: 10.3969/j.issn.1000-1298.2010.12.022
Database: Compendex 2. Accession number: 20110313600478
Title: Structure-improving and experiment of steel-roll round baler
Authors: Wang, Defu1 ; Jiang, Yiyuan1 ; Wang, Jiquan1
Author affiliation: 1 College of Engineering, Northeast Agricultural University, Harbin 150030, China
Corresponding author: Wang, D. (dfwang640203@sohu.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 84-88
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: For resolving plugging problem of the round baler with steel rolls, structure-improving of the steel-roll round baler was experimented. In the experimental study, single feeding roll and twin feeding rolls for enhancing feeding capability were experimented separately by feeding capability and reliability. By structure-improving experiment for five years, the round baler with twin feeding rolls was developed, which could resolve plugging in straw-baling course, and improve the adaptability for dry rice straw and green rice straw. It showed the round baler was practical to baling, and could enhance the reliability.
Number of references: 13
Main heading: Flight dynamics
Controlled terms: Experiments - Feeding
Uncontrolled terms: Baler - Experimental studies - Plugging problems - Rice straws - Round bale - Steel roll - Steel rolls - Structure-improving
Classification code: 691.2 Materials Handling Methods - 901.3 Engineering Research - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.12.018
Database: Compendex 3. Accession number: 20110313600492
Title: Design of framework for integrating 3D scene of crops production
Authors: Lu, Shenglian1 ; Guo, Xinyu1 ; Zhao, Chunjiang1 ; Xiao, Boxiang1 ; Wen, Weiliang1
Author affiliation: 1 National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
Corresponding author: Zhao, C. (zhaocj@nercita.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 153-159
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A flexible component and plugins-based hybrid framework for integrating 3D scene of crops growth and its process was presented. This framework was designed to facilitate the integration, reusability and interoperability of heterogeneous models and techniques. The proposed framework was consistd of a complete set of 3D-geometric components for modeling and visualization, including surfaces, height fields, terrain and lights, and a group of computing components, such as scene organization, rendering engine, collision detection, animation generation and so on. Based on the united defined plug-in interfaces, models for visual simulation of plant growth which developed by different research teams could be embedded into this framework. Users could create rapidly a prototype of 3D agricultural production scene and simulate the growth of crops, by using a graphical designing environment. The experimental results demonstrated that the interactive design and 3D scene rendering could be done in real time. The rendering speed would reach to 18 fps in 3D scene with up to 6000000 polygons.
Number of references: 15
Main heading: Three dimensional
Controlled terms: Animation - Crops - Integration - Interoperability - Reusability - Three dimensional computer graphics - Visualization
Uncontrolled terms: 3D scenes - Agricultural productions - Animation generation - Collision detection - Flexible components - Geometric component - Height fields - Heterogeneous models - Hybrid framework - Interactive design - Interactive modeling - Plant growth - Plug-ins - Real time - Rendering engine - Research teams - Scene integrationm - Visual simulation
Classification code: 902.1 Engineering Graphics - 821.4 Agricultural Products - 723 Computer Software, Data Handling and Applications - 921.2 Calculus - 718 Telephone Systems and Related Technologies; Line Communications - 716 Telecommunication; Radar, Radio and Television - 452.3 Industrial Wastes - 717 Optical Communication
DOI: 10.3969/j.issn.1000-1298.2010.12.032
Database: Compendex 4. Accession number: 20110313600481
Title: Response to salt stress about winter wheat in Huanghuaihai plain
Authors: Wu, Zhongdong1 ; Wang, Quanjiu2
Author affiliation: 1 Institute of Resources and Environment Engineering, Shandong University of Technology, Zibo 255048, China
2 Institute of Water Resources and Hydro-Electric Engineering, Xi'an University of Technology, Xi'an 710048, China
Corresponding author: Wang, Q. (wquanjiu@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 99-104
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To solve the shortage of freshwater resources in Huanghuaihai plain, salt stress experiments were carried out with different mineralization degrees slight saline water, the response of soil salt content of active rooting zone, yield and leaf area indexes to salt stress were analyzed. It showed that winter wheat has different responses under different rainfalls in growth duration. In order to obtain satisfactory yields, the highest degree of mineralization was 3 g/L in wet years and general years under local soil conditions, while in the drought years, the highest degree of mineralization could be used was 2 g/L without taking other measures. The results provided some basis for the rational development and use of local underground saline water resources.
Number of references: 14
Main heading: Saline water
Controlled terms: Groundwater resources - Hardwoods - Mineralogy - Rain - Soils - Water content
Uncontrolled terms: Fresh water resources - Leaf Area Index - Rooting zones - Salt stress - Salt stresss - Soil conditions - Soil salt content - Winter wheat - Yield
Classification code: 443.3 Precipitation - 444 Water Resources - 444.2 Groundwater - 482 Mineralogy - 483.1 Soils and Soil Mechanics - 811.2 Wood and Wood Products
DOI: 10.3969/j.issn.1000-1298.2010.12.021
Database: Compendex 5. Accession number: 20110313600463
Title: Simulation and test on anti-skid system control for four-wheel drive of high clearance spray machine
Authors: Ni, Jing1 ; Mao, Hanping1 ; Han, Lühua1 ; Zhang, Xiaodong1 ; Gu, Jian2 ; Zuo, Zhiyu1
Author affiliation: 1 Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Edu. and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
2 Engineering Training Center, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Mao, H. (maohp@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 13-16 21
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A motion model of a high clearance four-wheel drive spray machine chassis of the work process was established and a slip control based on fuzzy control system was realized through the relative slip rate as control objectives. Anti-skid controller was designed, simulation had been carried out by Matlab/Simulink and the anti-skid electro-hydraulic system test device was constructed. The simulated test results showed that the four wheel drive high clearance spraying electro-hydraulic anti-skid control system worked well, the control response time was 1.85 s, and the control precision reached to as accurate as 97.3%.
Number of references: 8
Main heading: Hydraulic machinery
Controlled terms: Control systems - Fuzzy control - Hydraulic equipment - Hydraulics - Remote control - Testing - Wheels
Uncontrolled terms: Anti-skid control - Four-wheel drive - Simulation - Spray machines - Test
Classification code: 921 Mathematics - 731.1 Control Systems - 731 Automatic Control Principles and Applications - 632.2 Hydraulic Equipment and Machinery - 632.1 Hydraulics - 601.2 Machine Components - 423.2 Non Mechanical Properties of Building Materials: Test Methods
DOI: 10.3969/j.issn.1000-1298.2010.12.003
Database: Compendex 6. Accession number: 20110313600489
Title: Quality for super heated stream puffing and drying banana
Authors: An, Fengping1 ; Song, Hongbo1 ; Song, Jiangliang1
Author affiliation: 1 College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Corresponding author: Song, H. (sghgbode@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 138-142
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Banana was used as material to study adding citric acid to inhibit enzymatic browning and effect of hot air drying on nutrient component loss and browning. Uniform experimental design method was used for studying the effect of puffing conditions on the shear strength of banana chips and processing technology was optimized. Results showed that dipping banana slice into 0.3% citric acid solution for 20 min could effectively inhibit enzymatic browning. The nutrient component loss and color deterioration of banana slice were occurred mainly in the falling rate drying period. Banana chip was produced by pre-dried with 70°C hot-air to a moisture content on dry basis of 0.3630, then puffed by 156°C super heated steam remaining for 60 s, finally dried with 70°C hot air to safety moisture content. Obtained banana chip had good brittleness and light nutrient component loss and browning.
Number of references: 8
Main heading: Drying
Controlled terms: Citric acid - Curing - Fracture mechanics - Fruits - Hydraulics - Moisture - Moisture determination - Nutrients - Shear strength
Uncontrolled terms: Banana chip - Citric acid solution - Experimental design method - Falling rate drying - Hot air - Hot air drying - Moisture contents - Nutrient components - Processing technologies - Puffing - Quality - Super heated stream
Classification code: 944.2 Moisture Measurements - 822.3 Food Products - 822 Food Technology - 821.4 Agricultural Products - 821.2 Agricultural Chemicals - 815.1 Polymeric Materials - 801.4 Physical Chemistry - 642.1 Process Heating - 632.1 Hydraulics - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties
DOI: 10.3969/j.issn.1000-1298.2010.12.029
Database: Compendex 7. Accession number: 20110313600491
Title: Water absorption properties of ultrasonic treated brown rice
Authors: Cui, Lu1 ; Yue, Tianli1 ; Pan, Zhongli2 ; Peng, Bangzhu1 ; Tang, Ya'nan1
Author affiliation: 1 College of Food Science and Engineering, Northwest A and F University, Shaanxi Yangling 712100, China
2 Processed Foods Research Unit, USDA-ARS West Regional Research Center, Berkeley CA94710, United States
Corresponding author: Yue, T. (yuetl@nwsuaf.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 148-152
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Water absorption characteristics of brown rice and ultrasonic treated brown rice were measured at six temperatures. Peleg's equation was used to model the water absorption below 60°C, and the water absorption character of brown rice above 60°C was also investigated. It revealed that ultrasonic treatment significant accelerated the water absorption properties of brown rice. Peleg's equation fit the measured moisture data below 60°C well, the coefficients of regressions r2≥0.996 and there had no significant difference between the measured and predict moisture content (R<5%).
Number of references: 29
Main heading: Water absorption
Controlled terms: Moisture - Ultrasonics - Water treatment
Uncontrolled terms: Absorption characteristics - Brown rice - Moisture contents - Moisture data - Peleg's equation - Ultrasonic treatments - Water absorption properties
Classification code: 445.1 Water Treatment Techniques - 753.1 Ultrasonic Waves - 801.4 Physical Chemistry - 802.3 Chemical Operations
DOI: 10.3969/j.issn.1000-1298.2010.12.031
Database: Compendex 8. Accession number: 20110313600486
Title: Multivariate approach to determinate sugar content of fragrant pears with temperature variation by visible/NIR spectroscopy
Authors: Xu, Huirong1 ; Chen, Xiaowei1 ; Ying, Yibin1
Author affiliation: 1 School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
Corresponding author: Ying, Y. (yingyb@zju.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 126-129 147
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Nondestructive determination of sugar content (SC) of fragrant pears with temperature variation (5°C, 10°C, 15°C and 20°C) was studied by visible-NIR spectroscopy coupled with multivariate calibration methods. In the region of 500~900 nm, five multivariate calibration models: stepwise multiple linear regression (SMLR), partial least squares (PLS), least squares-support vector machines (LSSVM1, only 30 bands spectral data obtained by SMLR analysis inputted as X variable), LSSVM2 (both 30 bands spectral data and sample temperature inputted as X variable) and genetic algorithm-partial least squares (GAPLS) were compared. The results showed that the prediction performance was in the order of LSSVM2, LSSVM1, GAPLS, PLS and SMLR.
Number of references: 12
Main heading: Multivariable systems
Controlled terms: Calibration - Fruits - Infrared devices - Linear regression - Near infrared spectroscopy - Sugar (sucrose) - Temperature distribution
Uncontrolled terms: Fragrant pears - Multivariate calibration - NIR spectroscopy - Nondestructive determination - Sugar content
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 961 Systems Science - 922.2 Mathematical Statistics - 821.4 Agricultural Products - 741.3 Optical Devices and Systems - 641.1 Thermodynamics - 822.3 Food Products
DOI: 10.3969/j.issn.1000-1298.2010.12.026
Database: Compendex 9. Accession number: 20110313600480
Title: Variable range of precision spraying of lawn sprinkler for control strategy by variable pressure technology
Authors: Tang, Yue1 ; Luo, Yin1 ; Yuan, Shouqi1 ; Liu, Junping1
Author affiliation: 1 Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Tang, Y. (tomt@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 93-98
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: There are several factors influence the range of complete fluidic sprinkler. They are inlet press, sprinkler elevation, sectional area, rotate speed, step frequency, pipe length, signal junction depth and so on. Experimental studies of these factors were carried out respectively, the regularity of range influencing factors was found. The inlet press and sectional area were direct proportion to the range of the sprinkler, rotate speed and step frequency were inverse proportion to the range of the sprinkler, pipe length and signal junction depth were less-influence the range of the sprinkler. Orthogonal array of five factors and four levels were selected to carry out the experiment. The dates were analyzed by the method of synthesis point rating. The graduations of range influencing factors were achieved after the orthogonal experiments. They were inlet press, sprinkler elevation, sectional area, signal junction depth, pipe length in sequence. The results showed that compared with active static slice method, varible frequency speed control could save energy by 27%.
Number of references: 13
Main heading: Sprinkler systems (irrigation)
Controlled terms: Energy conservation - Experiments - Pipe - Presses (machine tools) - Rotation - Spray nozzles - Water supply
Uncontrolled terms: Complete fluidic sprinkler - Control strategies - Energy saving - Experimental studies - Influencing factor - Inverse proportions - Junction depth - Orthogonal array - Orthogonal experiment - Rotate speed - Rotating nozzle - Save energy - Slice method - Sprinkler irrigation - Step frequency - Synthesis point - Variable pressure water supply - Variable range
Classification code: 821.1 Agricultural Machinery and Equipment - 631.1 Fluid Flow, General - 619.1 Pipe, Piping and Pipelines - 901.3 Engineering Research - 603.1 Machine Tools, General - 525.2 Energy Conservation - 446.1 Water Supply Systems - 601.1 Mechanical Devices
DOI: 10.3969/j.issn.1000-1298.2010.12.020
Database: Compendex 10. Accession number: 20110313600499
Title: Bilateral servo control of tele-robot based on electro hydraulic manipulator
Authors: Ni, Tao1 ; Zhao, Dingxuan1 ; Zhang, Hongyan1
Author affiliation: 1 College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
Corresponding author: Zhao, D. (zdx@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 190-194
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Aiming at the problem of low stiffness and indistinctive force perception existing in current electronic manipulator, an electro-hydraulic force feedback manipulator was set up. The manipulator had two rotational degree of freedom along X and Y direction in horizontal space, and each was driven by a single hydraulic servoing motor. Therefore, the motion of the manipulator along its different rotational axes would not interfere each other. Synthesizing the advantages of traditional bilateral control algorithm of force reflection servo type and parallel type, a combination of force/position deviation bilateral control strategy was put forward. Taking the hydraulic manipulator as the master and a 4-DOF construction robot as the salve, a tele-robot operation experiment was tested to study the bilateral servoing algorithm. Experiment showed that the combination of force/position deviation bilateral control strategy could effectively improve the dynamic response and stableness of the system.
Number of references: 6
Main heading: Manipulators
Controlled terms: Algorithms - Degrees of freedom (mechanics) - Dynamic response - Hydraulics - Pneumatic control equipment - Robots
Uncontrolled terms: Bilateral control - Bilateral control strategy - Bilateral servo control - Combination of force/position deviation - Construction robots - Electro-hydraulics - Force perception - Force reflection - Hydraulic manipulator - Parallel type - Robot operations - Rotational axes - Rotational degree of freedom - Servoing - Stableness - Tele-robot
Classification code: 408.1 Structural Design, General - 632.1 Hydraulics - 632.4 Pneumatic Equipment and Machinery - 723 Computer Software, Data Handling and Applications - 731.5 Robotics - 921 Mathematics
DOI: 10.3969/j.issn.1000-1298.2010.12.039
Database: Compendex 11. Accession number: 20110313600488
Title: Electronic nose monitoring for myrica rubra juice using different treatment techniques
Authors: Zhang, Yongjun1 ; He, Jiemin1 ; Jiang, Jiaxin1 ; Yang, Shengli2 ; Qian, Junqing2
Author affiliation: 1 College of Life Sciences, China Jiliang University, Hangzhou 310018, China
2 College of Pharmacology, Zhejiang University of Technology, Hangzhou 310014, China
Corresponding author: Zhang, Y. (yjzhang@vip.163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 134-137
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: An electronic nose (PEN3) was used to characterize and classify three different treatment methods of the myrica rubra juice. This method firstly sampled aroma composition emanating from the myrica rubra juice by PEN3 systems and then obtained response values of PEN3. After this, data analysis was conducted by using principal component analysis(PCA) and linear diserimination analysis(LDA). The results of this study showed that electronic nose was able to identify the different treatment methods of the myrica rubra juice by PCA and LDA. The basic research data and approach was provided for the myrica rubra juice processing with the blend modified polysulfone membrane determinations using a portable electronic nose.
Number of references: 7
Main heading: Principal component analysis
Controlled terms: Artificial organs - Industrial research
Uncontrolled terms: Basic research - Data analysis - Electronic NOSE - Juice processing - Myrica rubra juice - Polysulfone membranes - Portable electronic nose - Treatment methods - Treatment techniques
Classification code: 462.4 Prosthetics - 901.3 Engineering Research - 922.2 Mathematical Statistics
DOI: 10.3969/j.issn.1000-1298.2010.12.028
Database: Compendex 12. Accession number: 20110313600505
Title: A cutting simulation algorithm of spiral bevel gears based on analytic calculation
Authors: Han, Jiaying1, 2 ; Wang, Taiyong1 ; Li, Qing1 ; Zheng, Huijiang1
Author affiliation: 1 College of Mechanical Engineering, Tianjin University, Tianjin 300072, China
2 College of Maritime, Tianjin University of Technology, Tianjin 300191, China
Corresponding author: Han, J. (hanjiaying@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 223-227
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A cutting simulation algorithm of spiral bevel gears was put forward to verify the movement in the CNC machine cutting process. The algorithm separated the cutting process into a series of discrete cutting movements. The cutting movement number was quantified by computing the amount of cutting blades. For any discrete movement, the algorithm interpreted the cutter blades and the spiral bevel gear as cones and layer circles respectively. So the data points on the gear tooth surface were generated by calculating the intersection points of the cones and circles. The algorithm adopted analytic calculation and was applied on the multiple cutting movements simulation of the spiral bevel gear. The programming languages were used to develop the algorithm and fit the tooth surface data points into NURBS surface of solid model. The cutting simulation results showed good precision and better efficiency compared with those in CAD/CAM software.
Number of references: 15
Main heading: Bevel gears
Controlled terms: Algorithms - Computer control systems - Computer software - Coordinate measuring machines - Cutting tools - Gear cutting - Gear teeth - Machinery - Splines
Uncontrolled terms: Analytic calculations - Cad/cams - CNC machine - Cutter blade - Cutting blades - Cutting movement - Cutting process - Cutting simulation - Data points - Gear tooth surface - Intersection points - NURBS surface - Programming language - Solid model - Spiral bevel gears - Tooth surface
Classification code: 601 Mechanical Design - 601.2 Machine Components - 604.1 Metal Cutting - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 943.3 Special Purpose Instruments
DOI: 10.3969/j.issn.1000-1298.2010.12.045
Database: Compendex 13. Accession number: 20110313600476
Title: Design of potato digger in poke finger's wheel type
Authors: Wu, Jianmin1 ; Li, Hui2 ; Sun, Wei1 ; Huang, Xiaopeng1 ; Sun, Bugong1
Author affiliation: 1 College of Engineering, Gansu Agricultural University, Lanzhou 730070, China
2 Logistics Department, Lanzhou City University, Lanzhou 730070, China
Corresponding author: Wu, J. (wujm@gsau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 76-79
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A certain potato digger in poke finger's wheel type which fit walking tractor was designed. The machine used the fense-like digging device and the separation device in poke finger's wheel type. The structure parameters of the device for separating potato and soil was determined based on theoretical analysis. Field experimental results showed that potato digger performed smoothly in digging, lifting and transporting without any block, and potatoes were separated effectively from soil. Damage rate was 4.5%, losing rate was 3.6%, and obvious rate was 96.5%.
Number of references: 10
Main heading: Agricultural products
Controlled terms: Design - Soils - Wheels
Uncontrolled terms: Damage rate - Field experiment - Poke finger's wheel - Potato digger - Separation devices - Structure parameter - Wheel-type
Classification code: 408 Structural Design - 483.1 Soils and Soil Mechanics - 601.2 Machine Components - 821.4 Agricultural Products
DOI: 10.3969/j.issn.1000-1298.2010.12.016
Database: Compendex 14. Accession number: 20110313600466
Title: Analysis of structural parameters and experiment of plastic film collector for corn fields during seedling period
Authors: Yang, Li1 ; Zhang, Dongxing1 ; Hou, Shulin1 ; Xu, Fei1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Zhang, D. (zhangdx@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 29-34
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Focusing on the problem of fragmentation of plastic film and difficult recovery using machine, combining with the flexible features of corn seedlings, a plastic film collector which could recover plastic film during corn seedling period was designed. The plastic film was picked up by using pick-up wheels which had inclined fingers, and separated from the wheels by using flat belt and sent to collecting box by using sweeping wheel. The key structural parameters were determined by mechanism analysis and tests. The main factors which influenced picking up of plastic film were inclined angle θ and length l of the inclined fingers. The picking up rate was no less than 95% and passing ability of the collector was good when θ=20° and l=40 mm. Experiment results showed that the recovery rate was 92.1% and the injury rate to corn seedlings was less than 7.2% when the height of corn seedlings was lower than 30 cm. The collector could fulfill to pick up plastic film during corn seedling period.
Number of references: 20
Main heading: Plastic films
Controlled terms: Experiments - Grain (agricultural product) - Protective coatings - Recovery - Seed - Vehicles - Wheels
Uncontrolled terms: Corn fields - Inclined Angle - Injury rate - Maize - Mechanism analysis - Passing ability - Picking up - Recovery rate - Seedling period - Structural parameter
Classification code: 901.3 Engineering Research - 821.4 Agricultural Products - 817.1 Polymer Products - 813.2 Coating Materials - 601.2 Machine Components - 531 Metallurgy and Metallography - 432 Highway Transportation
DOI: 10.3969/j.issn.1000-1298.2010.12.006
Database: Compendex 15. Accession number: 20110313600502
Title: Quantitative measurement and evaluation of entity product handling comfort
Authors: Liu, Mingzhou1 ; Hu, Jing1 ; Li, Yeti1 ; Ge, Maogen1 ; Gong, Renbo1
Author affiliation: 1 School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author: Liu, M. (liumingzhou0551@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 205-209
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Aiming at the problem of quantitative evaluation of entity product handling comfort, and based on the analysis of the handling mechanism from psychology and physiology aspects, a quantifiable handling feedback model was built, and the definition of the handling comfort was introduced. With the human model of body joints and segments, the real physical values of connecting joints could be obtained, and the correlative curves were completed. Taking the index of force smoothness as an example, the handling comfort grade was calculated, and the weight of each index was ensured by the method of objective successive comparison, thus the handling comfort index (I) was finally figured out. Finally, a measurement and evaluation system of entity product handling comfort was established. And the representative entity product with two handling devices was measured and evaluated with this system in order to testify the validity and practicability of this method.
Number of references: 8
Uncontrolled terms: Comfort index - Entity product - Evaluation system - Feedback model - Handling comfort - Handling device - Handling feedback model - Human Model - Product handling - Psychology and physiology - Quantitative evaluation - Quantitative measurement
DOI: 10.3969/j.issn.1000-1298.2010.12.042
Database: Compendex 16. Accession number: 20110313600464
Title: Strength of adhesively bonded single lap for differential bondline thickness and tension loading prediction
Authors: Li, Long1 ; Hu, Ping2 ; Liu, Lizhong2
Author affiliation: 1 College of Automobile Engineering, Jilin University, Changchun 130025, China
2 College of Automobile Engineering, Dalian University of Technology, Dalian 116024, China
Corresponding author: Hu, P. (pinghu@dlut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 17-21
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Adhesively bonded lap is used extensively in the manufacture of automotive structures. In order to explore the strength of the structures with lap joints, the adhesively bonded single lap joints with differential bondline thickness were tested in tension loading which creates shear across the bondline. Various parameters were investigated such as the bondline thickness and spew fillet. The equivalent stress was obtained through finite element analysis to define the effect of spew fillet for thick bondline, which helped to get the conclusions that strength of single lap was decreasing as bondline thickness increasing and spew fillet could reduce the peak value of stress so as to enhance the strength of lap joints. Hart-Smith factor was used to compute the tension load of single lap joints, which helped to get conservative prediction of strength.
Number of references: 12
Main heading: Forecasting
Controlled terms: Automobile manufacture - Finite element method
Uncontrolled terms: Auto body - Bondline thickness - Shear tests - Single lap joints - Spew fillet - Strength prediction
Classification code: 662.1 Automobiles - 921 Mathematics - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1000-1298.2010.12.004
Database: Compendex 17. Accession number: 20110313600500
Title: Attachment force test of locust on slippery trapping plates
Authors: Wang, Lixin1 ; Zhou, Qiang1 ; Luo, Ruilong1 ; Xu, Shuyan1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Zhou, Q. (zq@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 195-198
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to provide technological reference for selecting materials and setting slanting angle of slippery trapping plates in plague locust capturing machine, attachment force testing system (the resolution is 1 mN, the measurement range is 0~3 N) was designed, and attachment force of locust on the plates with different materials and slanting angles were measured with this system. The experiment results exhibited that with the different materials of the plates, like zinc plate, PVC plate and silicate glass plate, the attachment force of locusts decreased apparently as the slanting angle increased. For the fixed slanting angle, the attachment force of locusts on zinc plate showed the much lower values. Based on the experiment results, zinc plate was more suitable for the plate and the minimum slanting angle should be 35°~40°.
Number of references: 8
Main heading: Materials testing
Controlled terms: Experiments - Instruments - Silicates - Zinc
Uncontrolled terms: Attachment force - Force test - Force testing - Locust - Measurement range - Silicate glass - Slippery trapping plate - Testing system
Classification code: 951 Materials Science - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 901.3 Engineering Research - 812 Ceramics, Refractories and Glass - 546.3 Zinc and Alloys - 423 Non Mechanical Properties and Tests of Building Materials - 422 Strength of Building Materials; Test Equipment and Methods - 414 Masonry Materials
DOI: 10.3969/j.issn.1000-1298.2010.12.040
Database: Compendex 18. Accession number: 20110313600465
Title: Comparative analysis of three ridge-loosing cutters based on permanent raised bed conservation tillage
Authors: Cai, Guohua1 ; He, Jin1 ; Li, Hongwen1 ; Wang, Qingjie1 ; Li, Hui1 ; Lu, Caiyun1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Li, H. (lihongwen@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 22-28
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In view of poor water lateral infiltration into the centers of wide beds under the system of PRB conservation tillage, three structural kinds of cutters including flat cutter, two-edge cutter and V-shaped cutter were designed respectively based on soil mechanics model. To get strength checking and comparative analysis, ANSYS software was adopted to analyze the cutters. The stress of the cutters applied was calculated based on pure-shear and two-wedge models, and got the stress pattern and deformed shape. The results showed that all of these cutters' strength met the demand, and deformed shape was very small. With AHP and effect coefficient methods, and using theoretical resistance, operation fuel consumption and soil moisture as evaluation indexes, V-shaped cutter was found to be the most suitable considering the integrated benefits.
Number of references: 20
Main heading: Soil conservation
Controlled terms: Agricultural machinery - Agriculture - Geologic models - Soil mechanics - Soil moisture - Static analysis
Uncontrolled terms: ANSYS software - Coefficient methods - Comparative analysis - Conservation tillage - Deformed shape - Evaluation index - Mechanics models - Properties comparison - Raised beds - Ridge-loosing cutter - Stress patterns
Classification code: 481.1 Geology - 483.1 Soils and Soil Mechanics - 723.1 Computer Programming - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment
DOI: 10.3969/j.issn.1000-1298.2010.12.005
Database: Compendex 19. Accession number: 20110313600468
Title: Design and experiment on no-till planter in horizontal residue-throwing finger-wheel type for maize
Authors: Zhang, Xirui1 ; He, Jin1 ; Li, Hongwen1 ; Wang, Qingjie1 ; Wu, Shasha1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Li, H. (lhwen@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 39-43
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The no-till planter in horizontal residue-throwing finger-wheel type for maize was designed. The residue-throwing finger-wheel, furrow opener, seeding and covering device were mainly analyzed. Furthermore, the key parameters were analyzed and determined. The field experiment showed that, though adopting the anti-blocking principle that combined horizontal residue-throwing finger-wheel device with residue-cutting by knife type opener, the machine could solve the residue and weed blocking effectively and show a good performance of passing and cutting stubble. Compared with strip-rotating maize no-tillage planter, the maize no-till planter could not only seed and fertilize at the suitable depths, but also decrease soil disturbance and fuel consumption by 69.7% and 19.3%, respectively. It indicated that this new planter could meet the requirements of agronomy.
Number of references: 15
Main heading: Wheels
Controlled terms: Agriculture - Design - Experiments
Uncontrolled terms: Blocking mechanisms - Field experiment - Furrow openers - Key parameters - Maize - No-till planters - No-tillage planter - Residue-throwing finger-wheel - Soil disturbances - Wheel-type
Classification code: 408 Structural Design - 601.2 Machine Components - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.12.008
Database: Compendex 20. Accession number: 20110313600493
Title: Synthetical evaluation of agriculture machine navigation system
Authors: Ji, Ying1, 2 ; Zhang, Man1 ; Liu, Gang1 ; Liu, Zhaoxiang1 ; He, Bei1
Author affiliation: 1 Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
2 College of Information Science and Technology, Agricultural University of Hebei, Baoding 071000, China
Corresponding author: Liu, G. (pac@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 160-164
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The multi-index evaluation model of agriculture machine navigation system was proposed, and the cost, accuracy, adaptability, stability and computing complexity were used as five indexes which mainly affect the navigation system performance. The weight of each index was decided by combining AHP and entropy method, which has the advantages of subjective and objective. The RBF neural network was used to build the evaluation model. Data analyses showed that the method was easy to use, and overcomed the influence of subjective factors.
Number of references: 11
Main heading: Neural networks
Controlled terms: Agricultural machinery - Agriculture - Analytic hierarchy process - Entropy - Hierarchical systems - Navigation - Navigation systems - Radial basis function networks
Uncontrolled terms: Analytic hierarchy - Computing complexity - Data analysis - Entropy methods - Evaluation models - Multi-index - RBF Neural Network - Subjective factors - Synthetical evaluation
Classification code: 921 Mathematics - 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 961 Systems Science - 723.4 Artificial Intelligence - 641.1 Thermodynamics - 434.4 Waterway Navigation - 716.3 Radio Systems and Equipment
DOI: 10.3969/j.issn.1000-1298.2010.12.033
Database: Compendex 21. Accession number: 20110313600504
Title: Integrated platform oriented to spiral bevel gear networked manufacturing
Authors: Deng, Xiaozhong1 ; Li, Jubo2 ; Li, Tianxing1 ; Gao, Zhenshan1 ; Zhang, Hua1
Author affiliation: 1 School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China
2 School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Deng, X. (DXZ01@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 215-222
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to improve the machining accuracy and efficiency of spiral bevel gear and implement the informatization of spiral bevel gear manufacturing, the information flow of spiral bevel gear networked manufacturing was deeply analyzed. A functional architecture of spiral bevel gear networked manufacturing integrated platform was proposed, and the application integration and software architecture of the integrated platform were implemented based on Web services. Finally, the prototyped system of the integrated platform was designed and constructed, and the feasibility and practicality of the integrated platform were proved through a networked manufacturing experiment of a pair of spiral bevel gears. The experimental results showed that the integrated platform proposed in the paper could commendably enhance the production efficiency and meet the networked manufacturing requirements of spiral bevel gear.
Number of references: 14
Main heading: Bevel gears
Controlled terms: Gear manufacture - Software architecture - Web services
Uncontrolled terms: Application integration - Functional architecture - Information flows - Informatization - Integrated platform - Machining Accuracy - Networked-manufacturing - Production efficiency - Spiral bevel gears
Classification code: 601.2 Machine Components - 723 Computer Software, Data Handling and Applications
DOI: 10.3969/j.issn.1000-1298.2010.12.044
Database: Compendex 22. Accession number: 20110313600501
Title: Generation and evaluation of disassembly sequences in green design
Authors: Zhang, Ling1, 2 ; Wang, Zhengxiao1 ; Pan, Xiaohong1 ; Dong, Tianyang3
Author affiliation: 1 Institute of Manufacturing Engineering, Zhejiang University, Hangzhou 310027, China
2 School of Economics and Management, Zhejiang University of Science and Technology, Hangzhou 310023, China
3 College of Computer, Zhejiang University of Technology, Hangzhou 310032, China
Corresponding author: Wang, Z. (wangzhengxiao@zju.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 199-204
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: After analyzing the characteristics of disassembly systematically, a multi-objective optimization model that could be employed to generate and evaluate appropriate disassembly sequences in green design efficiently was presented. The hierarchical attributed liaison graph(HALG) was built according to bill of material (BOM) and the knowledge in demanufacturing domains, and the disassembly sequence was generated automatically from HALG through recursively decomposing the assembly into subassemblies. This approach addressed the geometric feasibility of disassembly, the economic value of disassembly, and so on. For more, this approach could be used in the disassembly planning of the complicated products. To verify the validity and efficiency of the approach, the disassembly sequence planning system in green design was implemented and a variety of assemblies including some complicated products were tested, then the corresponding results were presented.
Number of references: 12
Main heading: Product design
Controlled terms: Multiobjective optimization - Planning - Recycling
Uncontrolled terms: Bill of materials - Complicated products - Demanufacturing - Disassembly planning - Disassembly sequence - Disassembly sequence planning - Economic values - Geometric feasibility - Green designs - Liaison graphs - Multi-objective optimization models - Product recycling - Sequence planning
Classification code: 403 Urban and Regional Planning and Development - 452.3 Industrial Wastes - 913.1 Production Engineering - 921.5 Optimization Techniques
DOI: 10.3969/j.issn.1000-1298.2010.12.041
Database: Compendex 23. Accession number: 20110313600503
Title: Analysis and PID control on dynamical performance of conveyor possessing closed-loop
Authors: Xi, Pingyuan1 ; Zhu, Jiang2 ; Shentu, Liufang1
Author affiliation: 1 School of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
2 School of Mechanical and Electronic Engineering, Changzhou College of Information Technology, Changzhou 213164, China
Corresponding author: Xi, P. (xipingy@hhit.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 210-214
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: With the development of belt conveyor dynamical analysis was required to design conveyor. The viscoelasticity model suiting to the belt was selected, and simulation model of driving device with closed-loop controlling was developed, which indicated that motor speed and its output torque vary with load and time, therefore the simulation results were more close to practice. The dynamic simulation model of overall conveyor system was programmed, and PID controller was applied to stabilize starting process of conveyor, thus the closed-loop controlling system was created in simulation software. The simulation of dynamic performances of conveyor provided accurate design techniques to controlling starting process and optimizing on belts system.
Number of references: 9
Main heading: Process control
Controlled terms: Belt conveyors - Closed loop control systems - Computer simulation - Computer software - Proportional control systems - Three term control systems - Two term control systems
Uncontrolled terms: Accurate design - Closed-loop - Controlling system - Conveyor systems - Driving device - Dynamic performance - Dynamic simulation - Dynamic simulation models - Dynamical analysis - Dynamical performance - Full-loading starting - Motor speed - Output torque - PID control - PID controllers - Simulation model - Simulation result - Simulation software - Starting process
Classification code: 692.1 Conveyors - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications - 731 Automatic Control Principles and Applications - 731.1 Control Systems
DOI: 10.3969/j.issn.1000-1298.2010.12.043
Database: Compendex 24. Accession number: 20110313600494
Title: Hard fault isolation of GPS navigation system based on gray prediction for agricultural robot
Authors: Zhou, Jun1 ; Zhang, Peng1
Author affiliation: 1 College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author: Zhou, J. (zhoujun@njau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 165-168 177
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: By combining the chi-square test and gray prediction, an algorithm of hard fault detection and isolation was introduced for the navigation of agricultural robot. The Kalman filtered data and historical valid GPS data were applied to detect and isolate positioning fault caused by the GPS failure, and none of other sensors were applied. With the prototype of the agricultural wheeled mobile robot, the experimental results showed that the GPS positioning fault was isolated effectively and had no any effects on the robot navigation. The error of gray prediction of GPS positioning data were less than 10 cm, and the missing rate of fault detection was reduced further when the false alarm rate of the chi-square test method was only 0.05.
Number of references: 6
Main heading: Global positioning system
Controlled terms: Error detection - Fault detection - Forecasting - Mobile robots - Navigation - Navigation systems
Uncontrolled terms: Agricultural robot - Chi-square tests - Fault isolation - GPS - Gray prediction
Classification code: 422 Strength of Building Materials; Test Equipment and Methods - 434.4 Waterway Navigation - 716.3 Radio Systems and Equipment - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 731.5 Robotics - 921 Mathematics
DOI: 10.3969/j.issn.1000-1298.2010.12.034
Database: Compendex 25. Accession number: 20110313600479
Title: Design and experiment of 6BX40 ramie-stripping machine rotary-cutter
Authors: Deng, Jianfeng1 ; Cai, Chaoqiang1 ; Li, Jiasheng1 ; Ou, Shirong1 ; Cai, Jianjiao1
Author affiliation: 1 Department of Mechanical and Electrical Engineering, Yiyang Vocational and Technical College, Yiyang 413049, China
Corresponding author: Deng, J. (djf27@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 89-92 98
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Nine kinds of rotary-cutter with different parameters were designed. The cross experiment of three factors on three levels was made in order to find out the most reasonable parameters of rotary-cutter on 6BX40 ramie-stripping machine. Through analyzing the parameters influence on three indices-the loss rate of fiber, glue content in fiber and power consumption, a better parameter group was found out: the rotary-cutter diameter was 45 mm, blade teeth helix angle was 4°, blade teeth front angle was 8°. The stripping experiment showed that the loss rate of fiber was 4.3%, glue content in fiber was 25.8%, power consumption was 0.92 kW, when the rotary-cutter cutting speed was 1.2 m/s, bark transportation speed was 0.6 m/s.
Number of references: 15
Main heading: Cutting
Controlled terms: Bark stripping - Experiments - Fibers - Glues - Gluing - Hemp - Machine design
Uncontrolled terms: Cutting speed - Helix angles - In-fiber - Loss rates - Parameter groups - Power Consumption - Ramie-stripping machine - Rotary-cutter
Classification code: 819.1 Natural Fibers - 817.1 Polymer Products - 817 Plastics and Other Polymers: Products and Applications - 901.3 Engineering Research - 812 Ceramics, Refractories and Glass - 604.1 Metal Cutting - 601 Mechanical Design - 811.2 Wood and Wood Products
DOI: 10.3969/j.issn.1000-1298.2010.12.019
Database: Compendex 26. Accession number: 20110313600462
Title: Frame flexibility's effect on ride comfort of heavy-duty truck
Authors: Wang, Dengfeng1 ; Hao, He1 ; Liu, Shengqiang2 ; Xu, Weigang2 ; Zuo, Ankang1 ; Li, Zhengmao1
Author affiliation: 1 State Key Laboratory of Automotive Dynamic Simulation, Jilin University, Changchun 130025, China
2 China National Heavy Duty Truck Group Co. Ltd., Ji'nan 250002, China
Corresponding author: Wang, D. (caewdf@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 7-12
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: It takes a new-type heavy-duty truck as study object. Vehicle multi-body model and rigid-flexible coupling model with flexible frame were built with FEA method and virtual prototype technology. These models with full loads were simulated in the case of B-road and weighted acceleration mean square root of the driver's seat floor of cab, suspension dynamic deflection and tire dynamic load were analyzed with different flexible frame, at the same time, these models with full load were simulated in steady-state characteristic test, it was studied that under-steer characteristic was influenced by different frame flexibility, and vehicle road tests of ride comfort and steady-state characteristic were implemented. The result showed that simulation results with flexible frame were closer to the experimental results than the ones with rigid frame. With low-order natural vibration frequencies of frame increasing, weighted acceleration mean square root of the driver's seat floor of cab, suspension dynamic deflection and dynamic tire load became better, that is, vehicle ride comfort was improved. Simultaneously, enhancing stiffness of frame properly could change vehicle under-steer characteristic for the better. Consequently, when the frame was designed, enhancing frame stiffness properly or increasing low-order natural vibration frequencies of frame were very helpful to improve ride comfort of heavy-duty trucks.
Number of references: 9
Main heading: Suspensions (components)
Controlled terms: Automobile suspensions - Automobiles - Computer simulation - Dynamic loads - Flexible couplings - Floors - Roads and streets - State estimation - Stiffness - Trucks - Vehicles
Uncontrolled terms: Flexible frame - Heavy-duty truck - Ride comforts - Rigid-elastic coupling - Virtual prototype
Classification code: 662.1 Automobiles - 662.4 Automobile and Smaller Vehicle Components - 663.1 Heavy Duty Motor Vehicles - 663.2 Heavy Duty Motor Vehicle Components - 723.5 Computer Applications - 731.1 Control Systems - 951 Materials Science - 602.2 Mechanical Transmissions - 402 Buildings and Towers - 406.2 Roads and Streets - 408.1 Structural Design, General - 421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 432 Highway Transportation - 601.2 Machine Components
DOI: 10.3969/j.issn.1000-1298.2010.12.002
Database: Compendex 27. Accession number: 20110313600485
Title: Parameters experiment of biomass pellet mill performance
Authors: Huo, Lili1, 2 ; Tian, Yishui2 ; Meng, Haibo2 ; Zhao, Lixin2 ; Hou, Shulin1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Institute of Energy and Environmental Protection, Chinese Academy of Agricultural Engineering, Beijing 100125, China
Corresponding author: Meng, H. (newmhb7209@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 121-125
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Experiment on the main parameter of biomass pellet mill with corn straw was performed on account of high energy consuming in the process of modeling. Energy consumption per ton solid biofuel, the rate of qualified molded biofuel, mechanical durability and particle density were used to evaluate the effect of changing clearances between rolls and die, spindle speed and diameter of die orifice. The results indicated that clearances between rolls and die justhad an effect on the rate of qualified molded biofuel, and the best optimal value was 0.2 mm, the energy consumption and particle density reducing by increasing of the spindle speed, bigger diameter of die orifice would bring about higher productivity and lower energy consumption. The spindle speed scope should not lower than 160 r/min to ensure the high productivity. Further, the rate of qualified molded biofuel was bigger than 95% and mechanical durability was bigger than 96%, which matched the requirements when experiments were done with different factors.
Number of references: 16
Main heading: Pelletizing
Controlled terms: Biofuels - Biomass - Dies - Durability - Energy utilization - Experiments - Orifices - Productivity
Uncontrolled terms: Biomass pellets - Corn straws - Energy consumption - High energy - High productivity - Lower energies - Main parameters - Mechanical durability - Mill performance - Optimal values - Particle densities - Pellet mill - Solid bio-fuels - Spindle speed
Classification code: 901.3 Engineering Research - 802.3 Chemical Operations - 619.1 Pipe, Piping and Pipelines - 603.2 Machine Tool Accessories - 913.1 Production Engineering - 525.3 Energy Utilization - 524 Solid Fuels - 523 Liquid Fuels - 421 Strength of Building Materials; Mechanical Properties - 525.1 Energy Resources and Renewable Energy Issues
DOI: 10.3969/j.issn.1000-1298.2010.12.025
Database: Compendex 28. Accession number: 20110313600498
Title: Forecasting model of CO2 concentration of solar greenhouse in the northern drought cold area and experimental verification in winter
Authors: Bi, Yuge1 ; Ma, Shuoshi1 ; Cui, Hongmei1 ; Zhu, Jun1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
Corresponding author: Ma, S. (mashuoshi@imau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 183-189
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Based on the principle of mass balance, a dynamic forecasting model of CO2 concentration of sunlight greenhouse in the northern drought cold area was established. The influenced factors correlative with CO2 concentration changing such as crop photosynthesis and respiration, soil respiration, carbon dioxide supply and natural or winded of closed situation ventilation were established in the model. To validate the correctness of the model, an experiment was carried out in a sunlight greenhouse in Agricultural Science and Technology Park in Inner Mongolia. The results showed that the inner forecasted CO2 concentration was well consistent with the measured data under the condition of sunny or cloudy day in the northern drought cold area in winter, and the relative error was less than 10%.
Number of references: 24
Main heading: Greenhouses
Controlled terms: Carbon dioxide - Concentration (process) - Drought - Forecasting - Geologic models - Solar heating
Uncontrolled terms: Agricultural science - Cold area - Dynamic forecasting - Experimental verification - Forecasting models - Inner Mongolia - Mass balance - Measured data - Northern drought cold area - Relative errors - Soil respiration - Solar greenhouse
Classification code: 921 Mathematics - 804.2 Inorganic Compounds - 802.3 Chemical Operations - 643.1 Space Heating - 481.1 Geology - 444 Water Resources - 402.1 Industrial and Agricultural Buildings
DOI: 10.3969/j.issn.1000-1298.2010.12.038
Database: Compendex 29. Accession number: 20110313600461
Title: Torsional random excitation of tracked vehicle powertrain system caused by road roughness
Authors: Liu, Hui1 ; Fu, Shengping1 ; Xiang, Changle1
Author affiliation: 1 School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Corresponding author: Liu, H. (lh@bit.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 1-6
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To analyze the torsional random excitation of tracked vehicle powertrain system, the road surface excitation was transferred from frequency region to time region based on given the statistical characteristics of road roughness. The root of torsional random excitation was investigated and theoretic calculating formula was proposed. Then the dynamics model of tracked vehicle was constructed under different road surface by abstracting each element of the vehicle mathematically. The torsional random excitation spectrum was numerically calculated. The effects of road roughness, vehicle velocity and pre-tension having on torsional random excitation were deeply studied. The investigated results indicated that the road roughness and tracked vehicle speed were the main factors to determine the value of torsional random excitation.
Number of references: 10
Main heading: Roads and streets
Controlled terms: Tracked vehicles
Uncontrolled terms: Dynamics models - Frequency regions - Power-train systems - Pre-tension - Random excitations - Road roughness - Road surfaces - Statistical characteristics - Time region - Vehicle velocity
Classification code: 406.2 Roads and Streets - 663 Buses, Tractors and Trucks
DOI: 10.3969/j.issn.1000-1298.2010.12.001
Database: Compendex 30. Accession number: 20110313600474
Title: Simulation and testing of cereal motion in threshing unit of combine harvester with axial feeding
Authors: Yang, Fangfei1 ; Yan, Chuliang1 ; Yang, Bingnan1 ; Yi, Shujuan2 ; Jiang, Nan2
Author affiliation: 1 State Key Laboratory of Soil Plant Machinery System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 College of Engineering, Heilongjiang August First Land Reclamation University, Daqing 163319, China
Corresponding author: Yan, C. (yancl@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 67-71 88
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Combine harvester with axial feeding threshing roller was rapidly popularized in recent years due to its high threshing rate, low broken rate and high separating rate. The movement of cereal passing through the axial feeding threshing roller was analyzed based on reasonable assumptions. According to the nonlinear equations of cereal motion in each sector, feeding zone, concave side and cover side of threshing-separating zone, software which could analyze cereal state of motion was developed based on numerical method of high order Runge-Kutta. The effectiveness of numerical simulation result was verified compared with high-speed photography testing results. This study laid the foundation for the design of axial feeding threshing roller.
Number of references: 18
Main heading: High speed photography
Controlled terms: Agriculture - Combines - Computer simulation - Equations of motion - Feeding - Harvesters - High speed cameras - Nonlinear equations - Numerical methods - Rollers (machine components) - Runge Kutta methods
Uncontrolled terms: Axial feeding - Combine harvesters - Feeding zones - High order - Motion state - Numerical simulation - Runge-Kutta - Simulation - Simulation and testing - Testing results - Threshing units
Classification code: 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 742.2 Photographic Equipment - 921 Mathematics - 742.1 Photography - 691.2 Materials Handling Methods - 601.2 Machine Components - 723.5 Computer Applications
DOI: 10.3969/j.issn.1000-1298.2010.12.014
Database: Compendex 31. Accession number: 20110313600475
Title: Effect analysis of calcium on cold resistance of aeroponic potato seedlings
Authors: Yu, Haiye1 ; Qiao, Jianlei1 ; Xiao, Yingkui1 ; Zhang, Yanping1 ; Wang, Shujie1
Author affiliation: 1 College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Corresponding author: Yu, H. (haiye@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 72-75 79
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The growth of aeroponic potato seedlings is sensitive to the ambient temperature as the roots are exposed to the air during cultivation. Effects of exogenous calcium treatment on physiological indexes of potato seedlings were studied in order to provide basis for improving the cold resistance by applying calcium reasonably in the low temperature production season. The results showed that the electrolyte leakage and MDA content in leaves of potato seedlings with calcium treatment were decreased, compared with the control, the activities of anti-oxidant enzymes (POD, CAT and SOD) in leaves were improved and the contents of osmotic adjustment substances (soluble sugar and soluble protein) in seedlings leaves were increased, however, the effect of calcium application on praline content in leaves was not obvious. Furthermore, calcium treatment could efficiently restrain the root activity drop of potato seedlings. The results above indicated that the calcium signaling was closely related to the physiological regulation of aeroponic potato seedlings in the low temperature condition, calcium application with appropriate concentration could improve the cold resistance of seedlings.
Number of references: 11
Main heading: Low temperature production
Controlled terms: Calcium - Osmosis - Physiology - Seed - Sugar (sucrose)
Uncontrolled terms: Aeroponic potato - Low temperatures - Osmotic adjustment - Physiological indices - Root activity
Classification code: 461.9 Biology - 549.2 Alkaline Earth Metals - 644.4 Cryogenics - 802.3 Chemical Operations - 821.4 Agricultural Products - 822.3 Food Products
DOI: 10.3969/j.issn.1000-1298.2010.12.015
Database: Compendex 32. Accession number: 20110313600470
Title: Kinematics modeling and parameters analysis of seven-linkage vegetable seedling transplanting mechanism
Authors: Chen, Jianneng1 ; Wang, Bohong1 ; Ren, Genyong1 ; Huang, Qianze1
Author affiliation: 1 College of Mechanical Engineering and Automation, Zhejiang Sci.-Tech. University, Hangzhou 310018, China
Corresponding author: Chen, J. (jiannengchen@zstu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 48-53
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The equations of displacement, velocity and acceleration of seven-linkage vegetable seedling transplanting mechanism were deduced. An aided analytical and simulation program was compiled by Visual Basic 6.0. The influences over the kinematics characteristics of the mechanism by some important parameters were analyzed by this program. The length of one of the two driving cranks had significant influence over the trajectory height of the transplanting tip, while it had little influence over the trajectory shape. The length of the other crank had significant influence over the trajectory height of the transplanting tip and hole size. The phase difference of two cranks had significant influence over the trajectory height of transplating tip and trajectory shape. According to the influences of these parameters, the results were analyzed. A group of preferable mechanical parameters were obtained by this program, whose corresponding trajectory and posture could meet the demands of vegetable transplanting.
Number of references: 6
Main heading: Trajectories
Controlled terms: Kinematics - Vegetables
Uncontrolled terms: Hole size - Kinematics characteristics - Kinematics modeling - Mechanical parameters - Parameter analysis - Parameters analysis - Phase difference - Seedling transplanting - Simulation program - Vegetable seedlings - Vegetable transplanter - Visual Basic 6.0
Classification code: 404.1 Military Engineering - 821.4 Agricultural Products - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.12.010
Database: Compendex 33. Accession number: 20110313600487
Title: Sugar content detecting of muskmelons by transmission spectra
Authors: Tian, Haiqing1 ; Wang, Chunguang1 ; Wu, Guifang1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
Corresponding author: Wang, C. (wcgjdy@yahoo.com.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 130-133
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A portable fiber spectrometer was employed for constructing a transmission spectra detecting system. The system took a 300 W tungsten-halogen light source, the integration time for muskmelon samples was 500 ms, cumulative integral times of discrete spectra was four, and the smooth method of spectra was boxcar method with four counts smoothing. The system was used to detect the sugar content for 140 samples. Based on the classical least square method (CLS), stepwise multiple linear regress method (SMLR), principal component regression method (PCR) and partial least square method (PLS), four different models between the spectra and the sugar content were established. The test of models indicated that the PLS method was more appropriate for calibration and prediction, the correlation coefficient r was 0.857, root mean square errors of calibration was 0.655, and root mean square errors of prediction was 0.838.
Number of references: 22
Main heading: Sugar (sucrose)
Controlled terms: Calibration - Errors - Least squares approximations - Light sources - Mean square error - Principal component analysis - Spectroscopy - Tungsten
Uncontrolled terms: Classical least squares - Correlation coefficient - Detecting - Detecting systems - Integration time - Linear regress - Muskmelon - Partial least square methods - Principal component regression - Root mean square errors - Sugar content - Transmission spectra - Transmission spectrums
Classification code: 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 922.2 Mathematical Statistics - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 921.6 Numerical Methods - 801 Chemistry - 744 Lasers - 543.5 Tungsten and Alloys - 822.3 Food Products
DOI: 10.3969/j.issn.1000-1298.2010.12.027
Database: Compendex 34. Accession number: 20110313600473
Title: Analysis on the eddy current of the air-and-screen cleaning device
Authors: Tang, Zhong1 ; Li, Yaoming1 ; Li, Hongchang1 ; Xu, Lizhang1 ; Zhao, Zhan1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Tang, Z. (tangweizhong0427@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 62-66
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Zero point of airflow velocity which is the heart of eddy current was found by drawing equal lines and measuring wind speed values of multi-point with digital screen anemometer on the DFQX3 material clearing and simulation test platform. Based on analyzing the effect of eddy current by the speed or angle of the centrifugal fan, both the law of the centre of eddy current was affected by changing the angle of the centrifugal fan at the same speed of the centrifugal fan and the centre of eddy current was also affected by changing the speed of the centrifugal fan at the same angle of the centrifugal fan. The results of grain cleaning test showed that the cleaning rate and lose rate were affected by changing the centre of the centrifugal fan. The best results of cleaning grain were that the speed and angle of eddy current were 950r/min and 25°, respectively.
Number of references: 12
Main heading: Eddy currents
Controlled terms: Air cleaners - Centrifugation - Cleaning - Experiments - Flow fields - Harvesters - Speed
Uncontrolled terms: Air flow velocity - Centrifugal fans - Cleaning device - Cleaning rate - Cleaning tests - Combine harvester - Digital screens - Screen cleaning - Simulation tests - Wind speed - Zero point
Classification code: 931.1 Mechanics - 901.3 Engineering Research - 821.1 Agricultural Machinery and Equipment - 802.3 Chemical Operations - 701.1 Electricity: Basic Concepts and Phenomena - 651.2 Wind Tunnels - 631.1 Fluid Flow, General
DOI: 10.3969/j.issn.1000-1298.2010.12.013
Database: Compendex 35. Accession number: 20110313600471
Title: Tribological characteristics of adhesive materials on cleaning sieve of rape combine harvester
Authors: Li, Yaoming1 ; Ma, Zheng1 ; Xu, Lizhang1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Li, Y. (ymli@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 54-57 47
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The main ingredients and structure of rape adhesive materials on cleaning sieve were analyzed for sieve hole blocking and multiply increased cleaning loss caused by the adhesive materials. Size distribution of rape adhesive materials on cleaning sieve was obtained. 77% of the adhesive materials' size were from 0.3 mm to 2.5 mm, and the main ingredients were distinctly different with different size range. Friction coefficient tests of rape nutshell, rape stalk & the adhesive materials were carried out. It was pointed out that their friction coefficients were commonly increased with the raise of their moisture, and the friction coefficients between the adhesive materials and metal reached to 0.71.
Number of references: 8
Main heading: Friction
Controlled terms: Adhesion - Cleaning - Combines - Harvesters - Materials - Sieves - Tribology
Uncontrolled terms: Adhesive materials - Combine harvester - Different sizes - Friction coefficients - Hole-blocking - Rape - Rape combine - Tribological characteristics
Classification code: 605 Small Tools and Hardware - 802.3 Chemical Operations - 821.1 Agricultural Machinery and Equipment - 931 Classical Physics; Quantum Theory; Relativity - 931.1 Mechanics - 951 Materials Science
DOI: 10.3969/j.issn.1000-1298.2010.12.011
Database: Compendex 36. Accession number: 20110313600469
Title: Power consumption experiment of rotary tillage and stubble-mulch knife roller
Authors: Wang, Zhishan1 ; Xia, Junfang1 ; Xu, Qichuan1 ; Hu, Runwen1
Author affiliation: 1 College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Corresponding author: Xia, J. (xjf@mail.hzau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 44-47
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Based on the principle of phase difference, the actual power consumption of the rotary tillage and stubble-mulch knife roller in mid-season rice straw field was tested by using magnetic torque sensor. The processing procedure was based on LabView. The system was calibrated on the experiment bench. The results showed that accuracy was lower than 5%. The results of field testing showed that the tillage depth of the machine and the rotate speed of axis greatly influenced the power consumption. The better operating status were as follows: operating power consumption of the first tillage with 55 mm of depth and 310 r/min of roller speed, its average was 7.13 kW; operating power consumption of the second operations with 110 mm was 7.59 kW, the ratio of straw returning was higher than 95%.
Number of references: 10
Main heading: Experiments
Controlled terms: Agricultural machinery - Agriculture - Rollers (machine components)
Uncontrolled terms: Field testing - Knife roller - LabViEW - Magnetic torques - Operating power - Phase difference - Power Consumption - Processing procedures - Rice straws - Roller speed - Rotary tillage and stubble-mulch - Rotate speed
Classification code: 601.2 Machine Components - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.12.009
Database: Compendex 37. Accession number: 20110313600484
Title: Online dry reed pipe height measurement system for biogas holder
Authors: Zhao, Yanli1 ; Wu, Junhui1 ; Zhu, Hongguang1 ; Ma, Lijun1
Author affiliation: 1 Modern Agricultural Science and Engineering Institute, Tongji University, Shanghai 200092, China
Corresponding author: Wu, J. (junhui_wu@tongji.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 116-120
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The online height measurement for a gas storage cabinet in the biogas project is great significant to its security control, estimations of biogas production and management of biogas consumption information. An online measurement of height called reed pipe online height measurement system which satisfied the demand of online measurement of the biogas holder was designed. The system was consisted of a permanent magnet, benchmarking measurements of reed switch and data acquisition boards. The magnet was mounted on the side of the counterweight frame. Benchmarking was a composition of multi-level with reed sensor group, and achieved data transmission through the chip concatenation. Data acquisition board was SCM system and the main role was to capture and upload the high signal. The system increased the enhanced cascade circuit to solve signal attenuation which was cased by the multi-level, in order to protect the system to utilize in the large-scale degree measurement of a gas-holder high test. Take constant-pressure-flexible biogas holder as an object, the system debugged, and results showed that the system had good stability and met the measurement accuracy practical engineering requirements.
Number of references: 25
Main heading: Measurements
Controlled terms: Benchmarking - Biogas - Magnets - Pipe - Program debugging - Security of data - Signal processing
Uncontrolled terms: Benchmarking measurement - Biogas production - Cascade circuit - Chip concatenation - Counterweight frame - Data acquisition board - Data transmission - Degree measurements - Gas storage - Good stability - Height Measurement - Measurement accuracy - Multi-level - On-line measurement - Practical engineering - Reed pipe-line - SCM systems - Security controls - Signal attenuation
Classification code: 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 913 Production Planning and Control; Manufacturing - 912 Industrial Engineering and Management - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 723.2 Data Processing and Image Processing - 716.1 Information Theory and Signal Processing - 704 Electric Components and Equipment - 619.1 Pipe, Piping and Pipelines - 522 Gas Fuels - 723.1 Computer Programming
DOI: 10.3969/j.issn.1000-1298.2010.12.024
Database: Compendex 38. Accession number: 20110313600477
Title: Simulation of minitype grass trimmer's cutter deformation
Authors: Shan, Chunxian1 ; Shao, Xia1 ; Liu, Tao1 ; Yang, Minguan1
Author affiliation: 1 School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Shan, C. (scx63@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 80-83 110
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The cutter's rotating deformation plays an important role which caused the vibration noise of grass trimmer. High-speed video camera was applied to get the deformation images of grass trimmer's cutter with protecting cover and without it. The tendencies and reasons of deformation were proposed. The finite element model of cutter based on experiment was established, the radial deformation was simulated by ANSYS, and the relations of the radial deformation between the cutter structure and rotational speed were analyzed. Reducing the area of big hole in the cutter could decrease the maximum radial deformation (in 12000 r/min, the value decreased by about 30%); Maintaining the motor speed at 8000 r/min around could control the maximum radial deformation below 0.2 mm and keep a smooth moving.
Number of references: 10
Main heading: Deformation
Controlled terms: Computer simulation - Finite element method - Video cameras
Uncontrolled terms: Cutter - Deformation images - Finite element models - Grass trimmer - High speed video cameras - Motor speed - Radial deformation - Rotational speed - Simulation - Vibration noise
Classification code: 421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 723.5 Computer Applications - 742.2 Photographic Equipment - 921.6 Numerical Methods
DOI: 10.3969/j.issn.1000-1298.2010.12.017
Database: Compendex 39. Accession number: 20110313600496
Title: Design of auto-precision feeding system for pigs
Authors: Zhu, Jun1 ; Ma, Shuoshi1 ; Mu, Houchun1 ; Bi, Yuge1 ; Chen, Xiaojiang1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author: Ma, S. (mashuoshi@imau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 174-177
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: An auto-precision feeding system was designed for pig breeding. According to system components both hardware and software, it's mainly components of hardware and software and their function were described in detail. The mainly hardware of precision feeding field system were PLC, stepping motor, driver and discharger. Software application program was developed by using KingView, which was composed of precision feeding interface and feed adding interface. Based on hardware and corresponding software application, automation and precision feeding system was achieved in the whole. The results of running indicated that the system runed stable and reliable, it realized automation and precision feeding, and its maximum error would be less than ±2% within certain range.
Number of references: 9
Main heading: Feeding
Controlled terms: Automation - Design - Materials handling equipment
Uncontrolled terms: Automation controls - Feeding system - Hardware and software - Maximum error - Pig - Precision feeding system - Software applications - System components
Classification code: 408 Structural Design - 691.1 Materials Handling Equipment - 691.2 Materials Handling Methods - 731 Automatic Control Principles and Applications - 732 Control Devices
DOI: 10.3969/j.issn.1000-1298.2010.12.036
Database: Compendex 40. Accession number: 20110313600495
Title: Data binding method in agricultural equipment reliability experiment
Authors: Tian, Zhaofeng1 ; Yan, Chuliang1 ; Li, Shujun1
Author affiliation: 1 State Key Laboratory of Soil Plant Machinery System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Tian, Z. (tzf@caams.org.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 169-173
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In the course of agricultural equipments reliability experiment, masses of experiment data and multimedia files were managed based on Web application and rich client built by Silverlight technology. Because of the change of data processing and the nonsupport of data binding by Silverlight technology, a data binding method was put forward by asynchronous transmission, the dynamic data was changed into static data in XML data sources, so the data in database could be dynamically bound by Silverlight application and managed in the form of database and file server. The load of file server could be effectively reduced. The storage security and processing efficiency of test data were enhanced.
Number of references: 21
Main heading: Data handling
Controlled terms: Equipment - Experiments - Multimedia systems - Network security - Reliability - Servers
Uncontrolled terms: Agricultural equipment - Asynchronous transmission - Data binding - Dynamic data - Experiment data - File servers - Multimedia files - Rich client - Silverlight - Storage security - Test data - WEB application - XML data sources
Classification code: 421 Strength of Building Materials; Mechanical Properties - 723 Computer Software, Data Handling and Applications - 901 Engineering Profession - 901.3 Engineering Research
DOI: 10.3969/j.issn.1000-1298.2010.12.035
Database: Compendex 41. Accession number: 20110313600497
Title: Disease diagnosis system design for cucumber based on Web
Authors: Wen, Haojie1 ; Zhang, Lingxian1 ; Fu, Zetian1 ; Li, Xinxing2
Author affiliation: 1 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
2 College of Engineering, China Agricultural University, Beijing 100083,China
Corresponding author: Fu, Z. (fzt@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 178-182
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Aimed at the difficulty of disease diagnosis caused by the weakness of information receptivity of local farmer in our country, a diagnosis system for cucumber disease was designed based on website. Users just need to check similar symptoms, but not to face to numbers in diagnosing process, that means to simplify the general information that expert systems need. This system used production as the knowledge representation method, and adopted quantitative diagnosis combining with rule-based reasoning (RBR) as reasoning mechanism, the result's accuracy was judged by its credibility and uniqueness by numbers of symptoms related with diseases. The efficiency of quantitative diagnosis was improved by RBR.
Number of references: 14
Main heading: Diagnosis
Controlled terms: Expert systems - Knowledge representation - Systems analysis
Uncontrolled terms: Cucumber - Cucumber disease - Diagnosis systems - Disease diagnosis - General information - Knowledge representation method - Quantitative diagnosis - Reasoning mechanism - Rule based reasoning
Classification code: 461.6 Medicine and Pharmacology - 723.4 Artificial Intelligence - 723.4.1 Expert Systems - 961 Systems Science
DOI: 10.3969/j.issn.1000-1298.2010.12.037
Database: Compendex 42. Accession number: 20110313600490
Title: Detecting and research on characteristics and mechanism of inner mechanical cracks of corn seed kernels
Authors: Li, Xiaofeng1 ; Jie, Xin1 ; Zhang, Yongli1 ; Li, Fei1 ; Gao, Lianxing1
Author affiliation: 1 College of Engineering, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author: Gao, L. (lianxing_gao@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 143-147
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to study the mechanism and its effect on germination and emergence of inner mechanical cracks of corn seed kernels in threshing, a computer recognition system of corn seed mechanical damage was developed and low damage corn seed threshing principle and device parameters was analyzed. The typical external characteristics of corn seed, distribution of crack, formation rule of inner mechanical crack and damage extent were studied by means of stereomicroscope technical method. Distribution and formation regularity of corn seed mechanical cracks were explored. The result showed that obvious differences universally existed in shape and size and the inner mechanical cracks of three kinds of corn seeds, the long cracks were accounted to 39.8% of cracks damage. The main reason for inner crack formation was that crown of corn kernel was shocked by the threshing parts while feeding. The cracks started from the impacted area of corn kernel crown and enlarged to the embryo inside crown. The information about the inner cracks could be found from the crown and back of corn seed kernel.
Number of references: 11
Main heading: Crack detection
Controlled terms: Agriculture - Seed
Uncontrolled terms: Characteristics - Corn kernels - Corn seeds - Crack formation - Damage extent - Device parameters - External characteristic - Inner mechanical crack of kernel - Long cracks - Low damages - Mechanical damages - Recognition systems - Shape and size - Threshing damage
Classification code: 421 Strength of Building Materials; Mechanical Properties - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural Products
DOI: 10.3969/j.issn.1000-1298.2010.12.030
Database: Compendex 43. Accession number: 20110313600467
Title: Simulation on magnetic precision seed-metering device
Authors: Hu, Jianping1 ; Wang, Qirui1 ; Shao, Xiuping1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Hu, J. (hujp@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 35-38 34
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A kind of permanent magnetic precision seed-metering device was designed. The seeding component was a cylindrical permanent magnet. According to the working principles of the permanent magnetic precision seed-metering, the model of seeds pickup process was established. A Matlab program based on this model was made. The influences of angular velocity, pickup angle, and relative coefficient of friction on pickup ratio were simulated and analyzed. Combination of optimal parameters was found. The relationship between pickup ratio and angular velocity, pickup angle, relative coefficient of friction were S type, exponential type and log-linear type. With the combination of optimal parameters, the pass percentage of seeding could reach to 97%.
Number of references: 13
Main heading: Seed
Controlled terms: Angular velocity - Computer simulation - Friction - Magnetic devices - Magnetism - Optimization - Permanent magnets - Pickups - Pneumatic materials handling equipment
Uncontrolled terms: Exponential type - Kinetics model - Linear types - Magnetic seed - MATLAB program - Optimal parameter - Performance simulation - Permanent magnetics - Pickup process - Relative coefficients - Seed-metering device - Working principles
Classification code: 921.5 Optimization Techniques - 821.4 Agricultural Products - 752.3.1 Sound Reproduction Equipment - 723.5 Computer Applications - 931.1 Mechanics - 714 Electronic Components and Tubes - 704 Electric Components and Equipment - 701.2 Magnetism: Basic Concepts and Phenomena - 691.1 Materials Handling Equipment - 704.1 Electric Components
DOI: 10.3969/j.issn.1000-1298.2010.12.007
Database: Compendex 44. Accession number: 20110313600472
Title: Design and experiment of the hulling rapeseed separator
Authors: Guo, Guisheng1 ; Lü, Xinmin1 ; Guo, Kangquan1 ; Feng, Tao1 ; Yang, Bingli1 ; Zhang, Lijun1
Author affiliation: 1 College of Mechanical and Electronic Engineering, Northwest A and F University, Shaanxi Yangling 712100, China
Corresponding author: Guo, K. (jdgkq@nwsuaf.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 58-61
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: According to the material properties of hulling rapeseed, a kind of hulling rapeseed separator was designed by combination air suction above the sieve with shaker. The separation principle and the main structural parameters were analyzed. It was studied that the separation result was affected by feeding volume, wind speed of front wind tunnel as well as wind speed of behind wind tunnel. The results showed that there was an optimal value for the effect of feed volume on rate of the hull containing kernel. Comparing with wind speed of behind wind tunnel, wind speed of front wind tunnel had more effect on the rate of hull including kernel and the rate of kernel including hull. The loss rate of separator was lower when feeding volume, wind speed of front wind tunnel, wind speed of behind wind tunnel were 750 kg/h, 1.5 m/s, 5.3 m/s.
Number of references: 10
Main heading: Wind tunnels
Controlled terms: Aerodynamics - Sieves - Speed - Wind effects
Uncontrolled terms: Air suction - Airflow - Feed volume - Hull - Loss rates - Material property - Optimal values - Rapeseed - Separation principle - Shake sieve - Structural parameter - Wind speed
Classification code: 443.1 Atmospheric Properties - 605 Small Tools and Hardware - 651.1 Aerodynamics, General - 651.2 Wind Tunnels - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.12.012
Database: Compendex 45. Accession number: 20110313600483
Title: Pyrolytic characteristics of lignin derived from corncob hydrolysis residues
Authors: Qiu, Zejing1, 2 ; Yin, Xiuli1 ; Ma, Longlong1 ; Zhang, Bin1, 2 ; Wu, Chuangzhi1 ; Wu, Shubin3
Author affiliation: 1 Renewable Energy and Gas Hydrate Key Laboratory, Chinese Acad. of Sci., Guangzhou 510640, China
2 Graduate School of Chinese Acad. of Sci., Beijing 100049, China
3 State Key Lab. of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
Corresponding author: Yin, X. (xlyin@ms.giec.ac.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 41
Issue: 12
Issue date: December 2010
Publication year: 2010
Pages: 111-115 142
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Residual lignin was extracted from corncob hydrolysis residues using modified enzymatic mild acidolysis lignin (EMAL) method. The pyrolytic characteristics of the extracted lignin was investigated by thermal analyzer (TA), and its kinetic model was studied as well. It was shown that the pyrolysis of residual lignin mainly occurred at the temperature range of 200~500°C, with two loss peaks at 270°C and 400°C respectively. Kinetic study indicated that pyrolysis of residual lignin belongs to two-order reaction. The main functional groups in residual lignin was characterized by fourier-transform infrared (FT-IR) spectroscopy, which showed that main functional groups were not destructed during isolation. The surface morphology of residual lignin and its pyrolysis char was studied by scanning electronic microscopy (SEM). The analyses showed that the individual particles of lignin were polygonal in shape with multiple conchoidal fracture surfaces, which undergone brittle and plastic deformation during pyrolysis. When pyrolysis temperature increased, the char was more uniformed.
Number of references: 24
Main heading: Lignin
Controlled terms: Brittle fracture - Functional groups - Hydrolysis - Kinetic theory - Pyrolysis - Thermoanalysis
Uncontrolled terms: Corncob - Fracture surfaces - Individual particles - Kinetic models - Kinetic study - Loss peaks - Mild acidolysis lignin - Order reactions - Pyrolysis temperature - Residual lignins - Scanning electronic microscopy - SEM - Temperature range - Thermal analyzers
Classification code: 421 Strength of Building Materials; Mechanical Properties - 801 Chemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds - 815.1.1 Organic Polymers - 931.1 Mechanics
DOI: 10.3969/j.issn.1000-1298.2010.12.023
Database: Compendex
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