2012年第43卷增刊共收录72篇
1. Accession number:20124915763415
Title:Simulation on corn plants in harvesting process based on ADAMS
Authors:Du, Yuefeng1 ; Mao, Enrong1 ; Song, Zhenghe1 ; Zhu, Zhongxiang1 ; Gao, Jianmin1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Mao, E. (gxy15@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:106-111
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:The models of stripper rollers of a certain type of corn harvester and corn plants were established in Pro/E. And then, these models were led to the ADAMS environment with the interface of MECHANISM/Pro to create the virtual prototyping models including constrains and motions. The harvesting process was simulated based on the ADAMS techniques of sensor and manuscript control. The simulation data analysis was mainly focused on the case that the corn plants at the angle of 79°. Finally, the best inclination angle of plant, 89°, was derived based on the analysis of harvest time and grain hurt rate.
Number of references:8
Main heading:Harvesting
Controlled terms:Plants (botany)
Uncontrolled terms:ADAMS - Corn harvesters - Corn plant - Harvest time - Inclination angles - Simulation data - Vertical roller - Virtual prototyping
Classification code:461.9 Biology - 821.3 Agricultural Methods
DOI:10.6041/j.issn.1000-1298.2012.S0.021
Database:Compendex
4. Accession number:20124915763412
Title:Modal analysis of header for type 4LZ-2.0 combine harvester
Authors:Chen, Shuren1 ; Han, Hongyang1 ; Lu, Qiang1
Author affiliation:1 Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Chen, S. (srchen@ujs.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:90-94
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 establish an accurate finite element model of header and get complete structural dynamic characteristics for combine harvester, the experimental modal analysis of type 4LZ-2.0 header was carried out. The modal parameters in each order were recognized by using ModalVIEW. Finite element model was analyzed by using UG software, and MAC value of experimental mode was calculated. The finite element model of header was validated.
Number of references:10
Main heading:Harvesters
Controlled terms:Finite element method - Modal analysis - Soil structure interactions - Structural dynamics
Uncontrolled terms:Combine harvesters - Dynamic characteristics - Experimental modal analysis - Experimental modes - Finite element models - Header - Modal parameters - Model validation
Classification code:408 Structural Design - 483.2 Foundations - 821.1 Agricultural Machinery and Equipment - 921 Mathematics - 921.6 Numerical Methods
DOI:10.6041/j.issn.1000-1298.2012.S0.018
Database:Compendex
5. Accession number:20124915763466
Title:Simulation algorithm of lunar rover based on Vortex
Authors:Jiang, Lei1 ; Guo, Jianjuan1
Author affiliation:1 China North Vehicle Research Institute, Beijing 100072, China
Corresponding author:Jiang, L. (feist201@yahoo.com.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:352-356
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 achieve the performance of lunar rover simulation assessment in a variety of state of motion, based on programming in the Pro/E modeling environment, 3-D terrain profile and vehicle models were changed to SQlite database directly. Lunar rover dynamic model was set up with Vortex's API functions. And then, visualized objects can be rendered by using OSG graphic engine. The typical terrain mechanical models in Vortex were evaluated and fixed based on wheel soil bench tests. Finally, 3-D visualized software was developed with Microsoft MFC framework, which had function of interrupt, call-back and simulation's datum recurring.
Number of references:6
Main heading:Computer simulation
Controlled terms:Application programming interfaces (API) - Computer software - Geologic models - Three dimensional computer graphics - Vortex flow
Uncontrolled terms:Lunar rovers - Mechanical model - Physics engine - Simulation - Virtual realized
Classification code:481.1 Geology - 631.1 Fluid Flow, General - 723 Computer Software, Data Handling and Applications - 723.5 Computer Applications
DOI:10.6041/j.issn.1000-1298.2012.S0.072
Database:Compendex
7. Accession number:20124915763409
Title:Design and experiment of combine harvester with function of stalk-discharging to ditch
Authors:Chen, Yulun1 ; Ding, Weimin1 ; Yang, Hongtu1 ; Ding, Qishuo1 ; Wang, Xiaochan1
Author affiliation:1 Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Ding, W. (wmding@njau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:73-78
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 multifunctional machine with functions of ditching and stalk-disposing while harvesting was developed. Field tests results showed that the mean working velocity and efficiency of the machine were about 0.8 m/s and 0.27 hm2/h. The ratio of stalk discharged to ditch was up to 95%. The field operation of harvesting, ditching and stalk-disposing was complete in one time.
Number of references:18
Main heading:Harvesters
Controlled terms:Agricultural engineering - Mechanical engineering
Uncontrolled terms:Combine harvesters - Ditch - Field operation - Field test - Multifunctional machines - Stalk-discharging to ditch
Classification code:608 Mechanical Engineering, General - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment
DOI:10.6041/j.issn.1000-1298.2012.S0.015
Database:Compendex
8. Accession number:20124915763441
Title:Optimization on harvesting technology and drying experiment of alfalfa
Authors:Qian, Wang1 ; Yang, Shikun1 ; Liu, Guilin1 ; Wang, Quanxi1 ; Wu, Yamei1
Author affiliation:1 Huhhot Branch, Chinese Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
Corresponding author:Qian, W. (qianwang0319@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:231-234 288
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 dry and wet harvesting technology of the hay and green grass was analyzed though experiments. Alfalfa drying rate of air drying was analyzed. Law of nutrition variation and dry matter loss was studied. The out-of-sync problem was resolved and nutrition retention rate was improved. The nutrition was up to 90% and dry matter loss was below 2%.
Number of references:9
Main heading:Experiments
Controlled terms:Harvesting - Nutrition - Optimization
Uncontrolled terms:Air drying - Alfalfa - Dry - Dry and wet - Dry matter loss - Drying rates - Retention rate
Classification code:461.7 Health Care - 821.3 Agricultural Methods - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2012.S0.047
Database:Compendex
9. Accession number:20124915763458
Title:Dynamic estimation measurement error of mass flow rate
Authors:Ding, Yongqian1 ; Ding, Weimin1
Author affiliation:1 Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing 210031, China
Corresponding author:Ding, W. (wmding@njau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:314-317
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 impact-based method, which can be used to measure the real-time velocity and the mass flow rate of the granules flow, was presented. And a way to dynamically estimate the measurement error of the velocity and mass flow rate was also provided. Using the self-designed experimental equipment, experiments with the soy bean as the experimental object to estimate the measurement error had been done. It was shown during the experiments that the maximal estimated error of the mass flow rate was 4.00% and the average value was 1.44%, the maximal estimated error of the velocity was 9.69% and had an average value of 5.03%. A positive correlation between the dynamic measurement accuracy and the measurement accuracy of gross mass was also found.
Number of references:9
Main heading:Pipe flow
Controlled terms:Experiments - Granulation
Uncontrolled terms:Average values - Dynamic estimation - Dynamic measurement - Dynamic measurement accuracy - Estimated error - Experimental equipments - Impact-based method - Mass flow rate - Measurement accuracy - Positive correlations
Classification code:619.1 Pipe, Piping and Pipelines - 802.3 Chemical Operations - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2012.S0.064
Database:Compendex
11.Accession number:20124915763449
Title:Walking goal line detection for grain combine harvester based on machine vision
Authors:Wu, Gang1 ; Tan, Yu1 ; Zheng, Yongjun1 ; Wang, Shumao1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Tan, Y. (tanyu32@sina.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:266-270
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 visual navigation of grain combine harvester, an algorithm was proposed for walking goal line detection on improved Hough transform (HT) on grain combine harvester. Through the improvement for image threshold segmentation of the 1-D maximum entropy, the computing speed was increased. After scanning the rows and columns of binary images, the end position of the walk goal line and the candidate points on the direction of the walk goal line were determined. Then the candidate points were used as points set, least squares methods and the end position of the goal line were combined to determine the point from the test line. The improved HT has finished the test line detection. Compared with the traditional HT, the improved HT transfers binary mapping into 1-D mapping, the computing speed was accelerated, and the space occupied was reduced. Meanwhile, the anti-interference ability was improved effectively. After testing thousands of pictures, the algorithm was well proved with effectively detecting the linear parameters, and the processing time was about 100 ms.
Number of references:9
Main heading:Computer vision
Controlled terms:Algorithms - Harvesters - Hough transforms - Image segmentation
Uncontrolled terms:Anti-interference - Binary mapping - Combine harvesters - Computing speed - Image threshold - Least squares methods - Line detection - Linear parameters - Maximum entropy - Processing time - Test-lines - Visual Navigation
Classification code:723 Computer Software, Data Handling and Applications - 821.1 Agricultural Machinery and Equipment - 921 Mathematics - 921.3 Mathematical Transformations
DOI:10.6041/j.issn.1000-1298.2012.S0.055
Database:Compendex
14. Accession number:20124915763429
Title:Process optimization of anaerobic fermentation with mixed material of food garbage and cow dung
Authors:Li, Yi1 ; Li, Lei2 ; Zhang, Dalei3 ; Gu, Shiyan1 ; Kou, Wei3 ; Yi, Weiming4
Author affiliation:1 College of Engineering, Shenyang Agricultural University, Shenyang 110866, China
2 Shijiazhuang Hongyi Energy Saving and Environmental Protection Technology Co. Ltd., Shijiazhuang 050081, China
3 Liaoning Institute of Energy Resource, Yingkou 115003, China
4 School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author:Yi, W. (yiweiming@sdut.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:180-185
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 early single factor test, quadratic regression orthogonal rotating combination design was applied. The whole gas production was taken as response value. Effects of four factors on anaerobic fermentation were studied. These four factors are the ratio of food garbage and cow dung, temperature, pH value and the ratio of inoculum and quality of fermentation. The mathematical mode about mixed fermentation of food garbage and cow dung was established, regression equation was optimized and analyzed, in addition, the optimal condition and interactive effects were exposed. The optimum technological conditions for the mixed-fermentation was as the followings: the ratio of food garbage and cow dung was 2.5, temperature was 37.5°C, the pH value was 7.0 and the ratio of inoculum volume and quality of fermentation was 4.The order of the influence of four factors on mixed-fermentation of food garbage and cow dung was as follows: the ratio of inoculum and quality of fermentation, temperature, the ratio of food garbage and cow dung, and pH value. The gas production of the optimum technological condition and the random experiment also showed no significant difference with the predictive value. The model fitted well.
Number of references:15
Main heading:Fermentation
Controlled terms:Optimization - pH - Process control
Uncontrolled terms:Anaerobic fermentation - Combination design - Cow dung - Gas productions - Interactive effect - Mixed materials - Optimal conditions - Optimum technological conditions - pH value - Predictive values - Quadratic regression - Regression equation
Classification code:731 Automatic Control Principles and Applications - 801.1 Chemistry, General - 801.2 Biochemistry - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2012.S0.035
Database:Compendex
15. Accession number:20124915763398
Title:Design and simulation of side rollover resistant capability of tracked vehicle for mountain orchard
Authors:Zhu, Yuqing1 ; Hong, Tiansheng1 ; Wu, Weibin1 ; Song, Shuran1 ; Li, Zhen1 ; Mo, Weibiao1
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:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:19-23
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 adapt to the environment of mountain orchard road transport characteristics, according to the tracked vehicle running characteristics, its general layout requirements were put forward based on the improvement of side rollover resistant capability of the tracked vehicle for mountain orchard. After the completion of all assembly designs, in order to improve side rollover resistant capability of the tracked vehicle for mountain orchards, the general layout of the system design was completed. The vehicle's 3-D model was established and carried on the simulation. The simulation results showed that the design met the design requirements, and shortened the period of design.
Number of references:17
Main heading:Tracked vehicles
Controlled terms:Computer simulation - Design - Landforms - Orchards - Three dimensional computer graphics
Uncontrolled terms:3D models - Assembly designs - Design and simulation - Design requirements - Layout designs - Road transports - Running characteristic - Side rollover resistant - Simulation
Classification code:408 Structural Design - 481.1 Geology - 663 Buses, Tractors and Trucks - 723.5 Computer Applications - 821.3 Agricultural Methods
DOI:10.6041/j.issn.1000-1298.2012.S0.004
Database:Compendex
17. Accession number:20124915763430
Title:Design and experiment of dry anaerobic digestion pilot plant for biogas producing
Authors:Jing, Quanrong1 ; Huang, Xiguo1 ; Wu, Lili1 ; Liu, Tianshu1 ; Yan, Xiaohui1 ; Li, Daoyi1
Author affiliation:1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author:Huang, X. (huangxg315@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:186-189
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:A pilot plant of dry anaerobic digestion was constructed in the dairy farm of Chinese Academy of Agricultural Mechanization Sciences. The plant included pretreatment system, solid feed-in system, horizontal anaerobic reactor, biogas storage and purification system, insulation warming system, and digestate discharging system. Specially designed low-speed horizontal rod-gear agitators used in the horizontal anaerobic reactor enhanced mass and heat transfer efficiency and overcame high solid feedstock feeding and discharging difficulties. Pilot-scale experiment of continuous dry thermophilic anaerobic digestion of dairy manure was conducted in the pilot plan. The experiment results showed that the pilot plant could efficiently dispose high solid dairy manure, and average volume biogas production was 3.0 m3/(m3·d).
Number of references:7
Main heading:Experiments
Controlled terms:Anaerobic digestion - Biogas - Machinery - Manures - Pilot plants - Process design
Uncontrolled terms:Agricultural mechanization - Anaerobic reactor - Average volume - Biogas production - Dairy farms - Dairy manures - Digestate - Heat transfer efficiency - High-solids - Pilot-scale experiments - Pretreatment systems - Purification systems - Thermophilic anaerobic digestion
Classification code:913.1 Production Engineering - 901.3 Engineering Research - 601 Mechanical Design - 522 Gas Fuels - 452.4 Industrial Wastes Treatment and Disposal - 452.3 Industrial Wastes - 402.1 Industrial and Agricultural Buildings
DOI:10.6041/j.issn.1000-1298.2012.S0.036
Database:Compendex
18. Accession number:20124915763411
Title:Development of measuring system for mechanical properties test of wheat stalk
Authors:Lü, Zongying1 ; Hou, Jialin1 ; Lang, Xuqiang1 ; Wang, Fengjie1 ; Jiang, Tao1
Author affiliation:1 College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
Corresponding author:Hou, J. (jlhou@sdau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:84-89
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 aim to study the mechanical properties of wheat stalks fracture, a kind of control system for the mechanics testing of wheat stalks was developed. The test equipment mainly included control section, executive body, information collection and display module, among which the quite accurate data acquisition system was very simple to operate. The experiment results show that the system is stable and reliable, with the deviation of collection data lower than 0.1%, which can fulfill the system requirements and test the wheat stalks feature in mechanics and physics. It provides an effective and reliable method and tool for material mechanics.
Number of references:18
Main heading:Degrees of freedom (mechanics)
Controlled terms:Equipment testing - Fracture testing - Mechanical properties - Mechanics
Uncontrolled terms:Control sections - Data acquisition system - Experimental devices - Information collections - Material mechanics - Measuring systems - Mechanical properties test - System requirements - Test equipments - Wheat stalk
Classification code:421 Strength of Building Materials; Mechanical Properties - 931.1 Mechanics - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
DOI:10.6041/j.issn.1000-1298.2012.S0.017
Database:Compendex
21. Accession number:20124915763442
Title:Numerical simulation of airflow fields in solar drying chamber by CFD
Authors:Ren, Haiwei1 ; Li, Jinping2 ; Liu, Zengguang2 ; Yue, Daling2 ; Zhang, Fei1 ; Li, Zhizhong1
Author affiliation:1 College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2 College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Corresponding author:Li, J. (lijinping77@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:235-238
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 distribution of airflow and construct the movement model of airflow velocity in traditional solar drying chamber, the numerical simulation of three-dimensional steady-state model was carried out to analyze the effect of wind speeds on the airflow distribution in drying chamber by using CFD software Fluent and the k-Ε model. The results showed that compared with the airflow speed of 2 m/s and 10 m/s, the internal wind speed and airflow distribution were better when airflow velocity was 6 m/s.
Number of references:13
Main heading:Air
Controlled terms:Computational fluid dynamics - Computer simulation - Solar dryers - Three dimensional - Wind effects
Uncontrolled terms:Air flow fields - Air flow velocity - Airflow distribution - Airflow speed - CFD softwares - Drying chambers - Movement model - Solar drying - Steady-state models - Wind speed
Classification code:443.1 Atmospheric Properties - 723.5 Computer Applications - 802.1 Chemical Plants and Equipment - 804 Chemical Products Generally
DOI:10.6041/j.issn.1000-1298.2012.S0.048
Database:Compendex
23. Accession number:20124915763404
Title:Air-suction corn precision metering device with mechanical supporting plate to assist carrying seed
Authors:Yang, Li1 ; Shi, Song1 ; Cui, Tao1 ; Zhang, Dongxing1 ; Gao, Nana1
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:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
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:Focusing on the problem of high missing-seeding rate of commonly used air-suction seed metering device when sowing corn seeds, especially at the edge of fields, a kind of air-suction precision metering device which used a mechanical supporting plate to assist carrying seeds was designed. There were many cells around the edge of the mechanical supporting plate which help to support and grip seeds, so the performance of attaching seeds of the air-suction seeding disc increased remarkably. The parameter of metering-device working area and main structural parameters of the supporting plate were analyzed and determined. Experiment results showed that the seeding quality of the newly designed metering device was satisfactory and the qualified index of seed spacing exceeded 91.40%, the missing-seeding rate and the reseeding rate were less than 3.82% and 4.78% respectively, and the coefficient of variation of seed spacing was less than 18.37%. All of which were obviously better than the corresponding indexes of commonly used air-suction seed metering device under the same working speed and air pressure.
Number of references:16
Main heading:Plates (structural components)
Controlled terms:Atmospheric pressure
Uncontrolled terms:Air pressures - Air-suction - Coefficient of variation - Corn - Corn seeds - Mechanical supporting plate - Metering devices - Precision metering - Seed metering devices - Seed spacing - Structural parameter - Working areas - Working speed
Classification code:408.2 Structural Members and Shapes - 443.1 Atmospheric Properties
DOI:10.6041/j.issn.1000-1298.2012.S0.010
Database:Compendex
25. Accession number:20124915763424
Title:Design and experiment of straw cutting and rubbing process device
Authors:Yuan, Hongfang1 ; Wang, Decheng1 ; Wang, Guanghui1 ; Fu, Zuoli1 ; Cai, Sangni1 ; Liang, Fang1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Wang, D. (wdc@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:153-157
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 test-bed was designed for cutting and rubbing straw, an experiment was carried out by cutting and rubbing corn straws with 75% moisture content. By means of orthogonal experimental analysis, the best parameters of this device were as follows: the spindle speed of 1000 r/min, multiple saw cutting blade, three hammers and feeding speed of 0.88 m/s. The result shows that when cutting and rubbing corn straw with 75% moisture content, the breaking rate is higher than 96%.
Number of references:9
Main heading:Cutting equipment
Controlled terms:Cutting - Experiments - Moisture determination - Straw
Uncontrolled terms:Corn straws - Experimental analysis - Feeding speed - Optimal design - Orthogonal experiment - Rubbing process - Saw cutting - Spindle speed
Classification code:604.1 Metal Cutting - 821.5 Agricultural Wastes - 901.3 Engineering Research - 944.2 Moisture Measurements
DOI:10.6041/j.issn.1000-1298.2012.S0.030
Database:Compendex
28. Accession number:20124915763437
Title:Simulation and experiment of airflow field in cartons of pressure-difference pre-cooling for litchi
Authors:Yang, Zhou1 ; Chen, Chaohai1 ; Duan, Jieli1 ; Lü, Enli1 ; Liu, Cancheng1 ; Wang, Liang1
Author affiliation:1 College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Yang, Z. (yangzhou@scau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:215-217 201
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 airflow field in cartons of the pressure-difference pre-cooling litchi was simulated by using Fluent software based on standard model and SIMPLE algorithm. The fitting equation of the relationship about length of cartoon and static pressure in cartoon was gotten with the fitting accuracy 0.817, which was verified by experiment. The experiment and simulation shows that the law between the internal pressure and length of the cartoon is positive correlation, and the pressure of air entrance is high, the pressure of air outlet is low.
Number of references:13
Main heading:Computer simulation
Controlled terms:Experiments
Uncontrolled terms:Air flow fields - Fitting accuracy - Fitting equations - FLUENT software - Litchi - Positive correlations - Pre-cooling - SIMPLE algorithm - Simulation - Standard model - Static pressure
Classification code:723.5 Computer Applications - 901.3 Engineering Research
DOI:10.6041/j.issn.1000-1298.2012.S0.043
Database:Compendex
29. Accession number:20124915763460
Title:Expert system design of chassis rapid design for high-speed transplanter
Authors:Li, Changlin1, 2 ; Wang, Xueliang1 ; Jin, Xiaoping1 ; Mao, Enrong1 ; Song, Zhenghe1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China
Corresponding author:Song, Z. (gxy16@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:323-328
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:In order to solve the problems of excessive dependence on importation, independent design and over-prolonged traditional design cycle and so on, the expression methods and reasoning mechanism of high-speed transplanters were applied. Finally, a designing inference engine and parametric parts models were built. Taking Visual Studio 2008, Oracle, Pro/E as major development platforms, the technologies of secondary development and database programming were adopted in developing the interface of the design system software. By combining the design knowledge, inference engine and parametric model of high-speed transplanter chassis, the knowledge-based rapid design of high-speed transplanter chassis was achieved.
Number of references:10
Main heading:Design
Controlled terms:Chassis - Expert systems
Uncontrolled terms:Design cycle - Design knowledge - Design systems - Development platform - High-speed transplanter - Independent design - Parametric models - Rapid design - Reasoning mechanism - Secondary development - Visual studios
Classification code:408 Structural Design - 663.2 Heavy Duty Motor Vehicle Components - 723.4.1 Expert Systems
DOI:10.6041/j.issn.1000-1298.2012.S0.066
Database:Compendex
30. Accession number:20124915763420
Title:Optimized design and experiment on semi-feeding peanut picking device
Authors:Hu, Zhichao1 ; Wang, Haiou1 ; Peng, Baoliang1 ; Chen, Youqing1 ; Wu, Feng1 ; Zhang, Yanhua1
Author affiliation:1 Nanjing Research Institute of Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
Corresponding author:Hu, Z. (nfzhongzi@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:131-136
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 semi-feeding peanut picking test-bed was developed to carry out the studies on optimized design and experiment on the structural and motion parameters of semi-feeding peanut picking device. Based on the motion analysis of picking process, ideal position state and parameter relationship of pods cluster during the picking section were determined to ensure that all the pods cluster could pass through the best picking areas by bottom-up and gradual-orderly mode. Influencing factors of picking frequency and strength as well as the influence on the picking performance were analyzed. On the basis of picking mechanism analysis and the experimental verification, the picking roller employed six backward-curved blades. After the multi-criteria response surface experiments, the optimized combination of structural and operational parameters were obtained as follows: the roller length was 1200 mm, the included angle between chain and roller was 7.2°, the roller diameter was 152.5 mm, roller overlap distance was 5 mm, roller rotate speed was 371 r/min, chain conveying speed was 1.025 m/s.
Number of references:12
Main heading:Rollers (machine components)
Controlled terms:Chain conveyors - Design - Experiments - Feeding - Oilseeds - Optimization
Uncontrolled terms:Experimental verification - Mechanism analysis - Motion analysis - Motion parameters - Multi-criteria - Operational parameters - Optimization design - Optimized designs - Overlap distance - Peanut - Picking device - Response surface - Roller diameter - Rotate speed - Semi-feeding
Classification code:921.5 Optimization Techniques - 901.3 Engineering Research - 821.4 Agricultural Products - 692.1 Conveyors - 691.2 Materials Handling Methods - 601.2 Machine Components - 408 Structural Design
DOI:10.6041/j.issn.1000-1298.2012.S0.026
Database:Compendex
34. Accession number:20124915763434
Title:Device for rapid nondestructive detection of pork freshness based on multispectral imaging technology
Authors:Li, Cuiling1 ; Peng, Yankun1 ; Tang, Xiuying1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Peng, Y. (ypeng@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:202-206
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:A rapid and nondestructive detection device for pork freshness with associated composite quality parameters based on multispectral imaging technology was designed. The system included hardware system and software system. Hardware system consisted of a single-chip microcomputer control unit, light source unit, image acquisition system, data processing unit and LCM display unit. Software system was designed in the ICCAVR development environment programmed by C language. The software was built to control image acquisition module, filter switching module, LCM display module and communication module with a PC. After debugging and experiment of the software and hardware systems, this device could meet the speed requirement of detecting a sample in less than 10 s, having the function of nondestructive and rapid detection.
Number of references:14
Main heading:Program debugging
Controlled terms:C (programming language) - Computer debugging - Computer software - Hardware - Image acquisition - Imaging techniques - Light sources - Meats - Switching circuits
Uncontrolled terms:Acquisition modules - C language - Communication modules - Data processing units - Development environment - Freshness - Hardware system - Image acquisition systems - Multispectral imaging - Non destructive - Nondestructive detection - Pork meat - Quality parameters - Rapid detection - Single chip microcomputers - Software systems - Speed requirement - Switching modules
Classification code:822.3 Food Products - 746 Imaging Techniques - 744 Lasers - 741 Light, Optics and Optical Devices - 723 Computer Software, Data Handling and Applications - 721.3 Computer Circuits - 605 Small Tools and Hardware
DOI:10.6041/j.issn.1000-1298.2012.S0.040
Database:Compendex
36. Accession number:20124915763431
Title:Methane and ammonia emissions patterns during digested slurry storage
Authors:Huang, Dandan1 ; Luo, Haojie2 ; Ying, Hongcang2 ; Wang, Kaiying1
Author affiliation:1 School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
2 Zhejiang Environmental Monitoring Center, Hangzhou 310012, China
Corresponding author:Wang, K. (zjuwky@zju.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:190-193
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:Measurements of gas emissions (CH4 and NH3) during pig digested slurry storage were carried out by using a dynamic chamber system. Gas emission patterns were obtained. Methane was continuously sampled with gas sampling system (GSS) and analyzed with gas analyzer TEI55i. Ammonia was collected with atmospheric sampling instrument and analyzed with chemical analysis at intervals. The result showed methane and ammonia concentration were both higher at the early days of the storage period. The methane concentration increased in the first 12 d, then began to reduce to only 1.44 mg/m3 on the 32th day. The ammonia concentration increased sharply in the first 12 d, but was not evident in the last two weeks, and reduced to less than 3 mg/m3 after the 40th day. Abatement of methane and ammonia emissions should be effective if mitigation options were implemented in the first 30 days and 40 days of digested slurry storage.
Number of references:16
Main heading:Methane
Controlled terms:Ammonia - Gas emissions - Methanation
Uncontrolled terms:Ammonia concentrations - Ammonia emissions - Dynamic chamber - Emission pattern - Gas analyzers - Gas-sampling systems - Methane concentrations - Mitigation options - Slurry storages - Storage periods
Classification code:451.1 Air Pollution Sources - 522 Gas Fuels - 802.2 Chemical Reactions - 804.2 Inorganic Compounds
DOI:10.6041/j.issn.1000-1298.2012.S0.037
Database:Compendex
38. Accession number:20124915763457
Title:Simulation analysis of effect of compaction on soil stress distribution
Authors:Zhao, Zhenjia1 ; Zou, Meng1 ; Xue, Long2 ; Wei, Can'gang1 ; Li, Jianqiao1
Author affiliation:1 Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
2 School of Mechatronics Engineering, East China Jiaotong University, Nanchang 330013, China
Corresponding author:Zou, M. (zoumeng@jlu.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:311-313 338
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 process of wheel compacted soil was simulated by using DEM. The results showed that after the compaction, soil hardness of different depths increased and changed obviously with depth. With the frequency increased, soil particle's contact force increased and longitudinal influence domain deepened. When wheel passed in the first three times, the increasing trend of soil's hardness was obvious. When wheel passed more than three times, the soil's hardness also increased. But the increasing was not obvious. When the layer deep was 15 cm, the hardness of compacted soil would increase by 155.2% when compared with the soil without compaction, the soil compacted six times would only increase by 22.9% when compared with the one compacted three times.
Number of references:11
Main heading:Soils
Controlled terms:Compaction - Hardness - Soil mechanics - Stress concentration - Wheels
Uncontrolled terms:Compacted soil - Contact forces - Influence domains - Simulation - Simulation analysis - Soil compaction - Soil particles
Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 483.1 Soils and Soil Mechanics - 536.1 Powder Metallurgy Operations - 601.2 Machine Components - 951 Materials Science
DOI:10.6041/j.issn.1000-1298.2012.S0.063
Database:Compendex
39. Accession number:20124915763446
Title:Design of visual position system for litchi picking manipulator
Authors:Xiong, Juntao1 ; Zou, Xiangjun2 ; Peng, Hongxing2 ; Wu, Dingzhong2 ; Zhu, Mengsi2
Author affiliation:1 School of Information, South China Agricultural University, Guangzhou 510642, China
2 Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Zou, X. (xjzou1@163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:250-255
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 visual positioning system of litchi picking manipulator was established based on the binocular stereo vision. By analyzing the color features of mature litchi, the YCbCr color model was selected. The Otsu algorithm was combined with fuzzy C-means clustering (FCM) to segment litchi fruit and peduncle. The experimental results showed that the effective recognition accuracy of litchi fruit and peduncle reached to 94.2%. The maximum distance between the fruit centroid and peduncle was calculated to determine litchi picking point. The color image matching method based on hue component of color image and the limiting binding method were used to achieve the stereo match of picking point, which realized the spatial position of picking point. Through the analysis of position error, the linear interpolation method was used to realize the positioning error compensation. The positioning experimental results showed that the depth value error was less than 10 mm, which could satisfy the visual accurate position requirements of litchi manipulator.
Number of references:17
Main heading:Manipulators
Controlled terms:Computer vision - Image matching - Image recognition
Uncontrolled terms:Binding methods - Binocular stereo vision - Color features - Color images - Color models - Depth value - Fuzzy C means clustering - Linear Interpolation - Litchi - Litchi fruit - Matching methods - Maximum distance - Otsu algorithm - Position errors - Recognition accuracy - Spatial positioning - Spatial positions - Visual position - Visual positioning
Classification code:716 Telecommunication; Radar, Radio and Television - 731.5 Robotics - 741 Light, Optics and Optical Devices - 741.2 Vision
DOI:10.6041/j.issn.1000-1298.2012.S0.052
Database:Compendex
40. Accession number:20124915763421
Title:Design and analysis of split garlic harvester
Authors:Xing, Liran1 ; Li, Ruxin1 ; Wang, Tiexin1 ; Zhang, Ji1
Author affiliation:1 Mechanical and Electronic Engineering College, Shandong Agricultural University, Taian 271018, China
Corresponding author:Li, R. (rxli@sdau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:137-140 111
Language:Chinese
ISSN:10001298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:Based on agronomic requirements of the garlic harvest, one kind of garlic harvester for split was designed. It included garlic seedling shear and garlic mining which configured in the front and rear of the tractor. It can complete garlic stems shear, garlic mining, garlic soil separation once a time. The garlic vine and garlic stack respectively to facilitate the collection and transport. Garlic was collected with a string bag directly after drying, to avoid leakage and save time and venue. Eccentric linkage vibrated the mining shovel, reduced the traction resistance and reduced energy consumption. Eccentric institutions as well as digging shovel motion simulated and analyzed by Pro/E, so that the whole structure and motion parameters were optimized and laid the foundation for the prototype trial.
Number of references:10
Main heading:Harvesters
Controlled terms:Energy utilization - Shovels
Uncontrolled terms:Design and analysis - Digging shovels - Garlic seedling shear - Mining shovels - Motion parameters - Traction resistance
Classification code:405.1 Construction Equipment - 525.3 Energy Utilization - 821.1 Agricultural Machinery and Equipment
DOI:10.6041/j.issn.1000-1298.2012.S0.027
Database:Compendex
41. Accession number:20124915763445
Title:Size detection for cherry fruit based on machine vision
Authors:Wang, Hui1 ; Lei, Yuchun1 ; Kang, Feng2, 3 ; Wang, Qi3 ; Zhao, Bo1 ; Zhang, Qin3
Author affiliation:1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
2 School of Technology, Beijing Forestry University, Beijing 100083, China
3 Center for Precision and Automated Agricultural Systems, Washington State University, WA 99350, United States
Corresponding author:Zhang, Q. (QinZhang@wsu.edu)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:246-249
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 size of sweet cherries is an important indicator of ripeness and quality. However, as a manual process heavily relying on individual judgment, the operation is labor intensive and subjective. A machine vision system was developed. Three methods were used to measure cheery size. Tests showed that standard deviation was 0.48 mm by using ellipse fitting method. This method was better than others, such as circle fitting method and rotation searching method.
Number of references:15
Main heading:Computer vision
Controlled terms:Fruits
Uncontrolled terms:Cherry - Circle fitting - Ellipse fitting - Ellipse fitting method - Fruit size - Labor intensive - Machine vision systems - Manual process - Searching methods - Size detection - Standard deviation - Sweet cherries
Classification code:723.5 Computer Applications - 821.4 Agricultural Products
DOI:10.6041/j.issn.1000-1298.2012.S0.051
Database:Compendex
43. Accession number:20124915763461
Title:Dynamic response characteristic simulation of double-action variable displacement plunger pump for sugarcane harvester
Authors:He, Zhi1 ; Liu, Qingting1 ; Ou, Yinggang1
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:Liu, Q. (qingting@scau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:329-334 328
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 mathematics model of double-action variable displacement plunger pump was built for sugarcane harvester based on power bond graph. Some nonlinear influence factors were linearized or neglected for the model. The response characteristic of flow, pressure and reversing were analyzed in Matlab/Simulink by changing swash plate angle of Eaton series 1 model No. 64 displacement plunger pump. The results showed that the proposed double-action variable displacement plunger pump had good dynamic response characteristics. It could meet the requirements of the hydraulic drive system on sugarcane harvester.
Number of references:13
Main heading:Pumps
Controlled terms:Dynamic response - Graph theory - Harvesters
Uncontrolled terms:Bond graph - Hydraulic drive system - Mathematics model - MATLAB /simulink - Response characteristic - Simulation - Sugarcane harvesters - Swash plate - Variable displacement
Classification code:408.1 Structural Design, General - 618.2 Pumps - 821.1 Agricultural Machinery and Equipment - 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.6041/j.issn.1000-1298.2012.S0.067
Database:Compendex
45. Accession number:20124915763400
Title:Motion analysis and parameter optimization for pot seedling planting mechanism based on up-film transplanting
Authors:Jin, Xin1 ; Li, Shujun2 ; Yang, Xuejun3 ; Yan, Hua3 ; Wu, Jianmin3 ; Mao, Zhihuai1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
3 The Modern Agricultural Equipment Co. Ltd., Beijing 100083, China
Corresponding author:Li, S. (lisj@caams.org.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
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:During the up-film transplanting for dibble-type transplanters, the mulch film could be easily dilaceraded and scraped. Aiming at this problem, a pot seedling transplanter in duck-beak style was designed while the working principle of it was expounded. The motion mathematical model of its planting mechanism was established. And then, parametric modeling for the planting mechanism based on the model was completed in ADAMS. The influences over the mechanism motion characteristic by some important parameters were analyzed by using the parametric model. In addition, the cave value which formed by the distance between two intersections points of the duck-beak trajectory and ridge line as possible as small was taken as the optimization objective, while the higher upright degree of seedling was ensured. Meanwhile, the optimal parameter combination of planting mechanism was obtained. With it, the cave value was 1.8 mm and the verticality of duck-beak trajectory after transplanting seedlings was higher, and then the demands of up-film transplanting could be met, namely higher upright degree of seedling and without dilacerating films.
Number of references:10
Main heading:Optimization
Controlled terms:Caves - Mathematical models
Uncontrolled terms:Motion analysis - Motion characteristics - Mulch films - Optimal parameter combinations - Parameter optimization - Parametric modeling - Parametric models - Pot seedling transplanter - Ridge lines - Up-film transplanting - Working principles
Classification code:481.1 Geology - 921 Mathematics - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2012.S0.006
Database:Compendex
47. Accession number:20124915763439
Title:Design and experiment of heat pump assisted solar energy heat-storage drying equipment for herbage seed
Authors:Wang, Quanxi1, 2 ; Wang, Decheng1 ; Du, Jianqiang2 ; Zhai, Gaixia2
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Huhhot Branch, China Academy of Agricultural Mechanization Sciences, Huhhot 010010, China
Corresponding author:Wang, D. (wdc@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:222-226 265
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 herbage seed drying equipment problems of power consumption, air discharge and solar energy application, a drying mode was proposed. Basis heating was supplied by thermal-stored solar energy, and air charge was dehumidified and reused by heat pump. Main working parts, such as thermal collector, thermal storage and heat pump, and whole drying machine were designed. Using movable design idea, thermal collector was controllable and whole machine was placed safely. Performance test results showed that handling capacity reached to 161 kg/h, power handling capacity achieved to 8.4 kg/(kW·h), the drying capacity reached to 3367 kg·%/h, and dry strength achieved to 6.7 kg/(m3·h). The power consumption ration of solar PCM heat-storage drying, solar energy and heat pump teamwork drying, heat-pump drying and electricity power drying was 0.9:1.0:1.2:1.5.
Number of references:10
Main heading:Drying
Controlled terms:Heat pump systems - Heat storage - Humidity control - Solar energy
Uncontrolled terms:Air charge - Air discharge - Design ideas - Drying capacity - Drying equipment - Drying machines - Handling capacity - Heat pumps - Performance tests - Power handling capacity - Solar energy applications - Thermal collectors - Thermal storage - Whole machine - Working parts
Classification code:402 Buildings and Towers - 615.2 Solar Power - 641.2 Heat Transfer - 642.1 Process Heating
DOI:10.6041/j.issn.1000-1298.2012.S0.045
Database:Compendex
50. Accession number:20124915763397
Title:Optimal matching of transmission system for multi-purpose self-propelled pasture plot
operation machine
Authors:Gao, Yang1 ; Wang, Decheng1 ; Fang, Xianfa2 ; Zhao, Jianzhu1 ; Wang, Guanghui1 ; Wang, Zongwen1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author:Wang, D. (wdc@cau.edu.cn)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:11-18 23
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 engine experiment, the transmission system of multi-purpose (rotary tilling, seeding, mowing and transporting) self-propelled pasture plot operation machine was optimally matched by using optimum design software which was developed in Matlab. The best matching scheme was obtained after simulation of power performance and fuel economy of transmission system and matching calculation between engine and transmission system. The selected matching scheme of engine and transmission system was optimized further, and then the transmission parameters were obtained after optimization. The results of transmission parameters were as follows: transmission ratio of first speed was 2.0039, second speed was 1.4595, third speed was 0.9775, fourth speed was 0.6751, reverse gear was 1.9840, transmission ratio of high-gear and low-gear were 1.0478 and 3.1102, respectively, and transmission ratio of central drive was 5.3711. Power performance and fuel economy of machine were improved to some extent, and matching degree between engine and transmission system was increased by 6.29% after optimization.
Number of references:14
Main heading:Transmissions
Controlled terms:Agriculture - Fuel economy - MATLAB - Optimization
Uncontrolled terms:Matching degree - Matching scheme - Multi-purpose - Operation machine - Optimal matching - Optimum design software - Pasture plot - Power performance - Reverse gears - Transmission parameters - Transmission ratios - Transmission systems
Classification code:521 Fuel Combustion and Flame Research - 602.2 Mechanical Transmissions - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 921 Mathematics - 921.5 Optimization Techniques
DOI:10.6041/j.issn.1000-1298.2012.S0.003
Database:Compendex
51. Accession number:20124915763450
Title:Visual navigation system path recognition algorithm based on DaVinci platform for combine harvester
Authors:Zhang, Chengtao1, 2 ; Tan, Yu1 ; Wu, Gang1 ; Wang, Shumao1
Author affiliation:1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Automobile Engineering Department, Guangxi University of Technology, Liuzhou 545006, China
Corresponding author:Tan, Y. (tanyu32@sina.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:271-276
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 combine visual navigation of real-time and robustness requirement, based on the DaVinci platform, a path recognition algorithm was designed. After analyzing the texture measure in the image of wheat harvest, the path recognition algorithm of visual navigation, on account of an improved smoothness texture feature, was put forward. The original brightness image was converted into horizontal smoothness image, by the image texture feature of the horizontal smoothness. The harvest boundary was extracted from the smoothness image by using adaptive threshold segmentation, and finally visual navigation path could be determined by Hough transform. In order to validate the algorithm in the operation of the DaVinci platform, the navigation experiments of wheat harvest by combine harvester were conducted. The experimental results showed that the algorithm had the high real-time and good robustness. Its average rate of recognizing navigation line was up to 28.6 frame per second. Path recognition effect was good in a variety of environments. Algorithm operation was stable and reliable, and to continue operating time was unlimited.
Number of references:11
Main heading:Image texture
Controlled terms:Algorithms - Feature extraction - Harvesters - Harvesting - Hough transforms - Image segmentation - Navigation systems - Textures
Uncontrolled terms:Adaptive threshold segmentation - Algorithm operation - Average rate - Combine harvesters - Davinci - Operating time - Path recognition - Texture features - Visual Navigation - Wheat harvest
Classification code:933 Solid State Physics - 921.3 Mathematical Transformations - 921 Mathematics - 821.3 Agricultural Methods - 821.1 Agricultural Machinery and Equipment - 723.2 Data Processing and Image Processing - 723 Computer Software, Data Handling and Applications - 716 Telecommunication; Radar, Radio and Television - 434.4 Waterway Navigation
DOI:10.6041/j.issn.1000-1298.2012.S0.056
Database:Compendex
52. Accession number:20124915763423
Title:Design and experiment of walnut-cracking device
Authors:Li, Zhongxin1 ; Liu, Kui1 ; Yang, Liling1 ; Abulizi, Basiti1 ; Ma, Wenqiang1 ; Yan, Shengkun1
Author affiliation:1 Agricultural Mechanization Institute, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
Corresponding author:Li, Z. (xjxn669@126.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:146-152
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:In order to study the walnut-cracking broken mechanism and performance of walnut-cracking device, the cracking experimental research for certain physical characteristics was done by using a walnut-cracking device based on extrusion friction mechanism. On this basic, walnut varieties, size (length of edge), the moisture content of walnut shell, which were investigated by single-factor experiments, were tested to specify the effects of walnut cracking. The result is that the optimal scope of walnut and machine was as follows: 6° as cone basket angle of device, edge length above 28 mm, thickness of the shell below 2 mm and 8%-10% as moisture content of walnut.
Number of references:22
Main heading:Experiments
Controlled terms:Moisture determination
Uncontrolled terms:Analysis of force - Edge length - Experimental research - Friction mechanism - Performance tests - Physical characteristics - Walnut - Walnut shells
Classification code:901.3 Engineering Research - 944.2 Moisture Measurements
DOI:10.6041/j.issn.1000-1298.2012.S0.029
Database:Compendex
53. Accession number:20124915763399
Title:Effective clearance calculation of three-point hitch linkage for rototilling-planting machine
Authors:Qi, Jiangtao1 ; Jia, Honglei1 ; Zhuang, Jian1 ; Fan, Xuhui2, 3 ; Liu, Chunxi3 ; Liu, Dandan2
Author affiliation:1 Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China
2 School of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
3 Jilin Provincial Academy of Agricultural Machinery, Changchun 130022, China
Corresponding author:Jia, H. (jiahl@vip.163.com)
Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title:Nongye Jixie Xuebao
Volume:43
Issue:SUPPL.1
Issue date:October 2012
Publication year:2012
Pages:24-28
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:Taking separated multeity machine as the resear