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2012年第43卷第4期共收录44篇
1. Accession number:20122515129850
  Title:Drive optimization of parallel robot under redundant tasks based on genetic algorithm
  Authors:Liu, Wei1 ; Chang, Siqin1  
  Author affiliation:1  College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  Corresponding author:Chang, S. (changsq@mail.njust.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:221-224 220
  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 six pyramid parallel robot was taken as the object, and the dynamic model of the robot was established by using the Lagrange method. The relationship between the drive current and tasks trajectory was analyzed combined with the design principle of linear motor. With the goal of minimum instantaneous kinetic energy, motor drive was optimized based on genetic algorithm. Energy consumption optimized was reduced by 47.6% compared with non redundant tasks. The experiment of redundant track tasks was carried out. The experimental results showed that the current change was in good agreement with the simulation results, and the feasibility and rationality of this optimization method was verified.
  Number of references:12
  Main heading:Genetic algorithms
  Controlled terms:Dynamics  -  Electric drives  -  Energy utilization  -  Optimization  -  Robots
  Uncontrolled terms:Current change  -  Design Principles  -  Drive currents  -  Lagrange methods  -  Motor drive  -  Optimization method  -  Parallel robots
  Classification code:931.1 Mechanics  -  921.5 Optimization Techniques  -  921 Mathematics  -  731.5 Robotics  -  723 Computer Software, Data Handling and Applications  -  705 Electric Generators and Motors  -  525.3 Energy Utilization
  DOI:10.6041/j.issn.1000-1298.2012.04.042
  Database:Compendex

2. Accession number:20122515129814
  Title:3WZ-700 self-propelled air-blowing orchard sprayer
  Authors:Qiu, Wei1, 2 ; Ding, Weimin1, 2 ; Wang, Xiaochan1, 2 ; Gong, Yan3 ; Zhang, Xiaoxin4 ; Lü, Xiaolan3 
  Author affiliation:1  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
                 2 Key Laboratory of Intelligent Agricultural Equipment, Nanjing Agricultural University, Nanjing 210031, China
                 3  Plant Protection and Environmental Engineering Technology Center, Nanjing Research Institute of Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China
                 4  College of Economics and Management, Nanjing Forestry University, Nanjing 210037, 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:4
  Issue date:April 2012
  Publication year:2012
  Pages:26-30 44
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:According to modern orchard planting pattern, a kind of self-propelled air-blowing orchard sprayer was developed. Adopting theoretical calculation and virtual prototype technology, the whole structure design and the key components technical parameters were determined. A ring fan was designed for modern orchard. The impeller was 0.7 m and outlet width was 0.13 m. The step-less transmission of fan was accomplished from 0 to 2 000 r/min. The field experiment showed that the front deposition reached to 61.22% and other side reached to 20.90% inside the trees. In the surface of the trees, the front deposition reached to 77.22% and other side reached to 37.17%. The operation efficiency reached to 1.02 hm2/h.
  Number of references:14
  Main heading:Orchards
  Controlled terms:Experiments  -  Forestry
  Uncontrolled terms:Air-blowing  -  Field experiment  -  Operation efficiencies  -  Self-propelled  -  Structure design  -  Theoretical calculations  -  Virtual Prototype Technology
  Classification code:821.0 Woodlands and Forestry  -  821.3 Agricultural Methods  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.04.006
  Database:Compendex

3. Accession number:20122515129839
  Title:Hot blast heating experiment in greenhouse canopy based on porous pipes
  Authors:Wang, Xinkun1 ; Xu, Ying1 ; Xia, Liping1 ; Gao, Shikai1 
  Author affiliation:1  Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Wang, X. (xjwxk@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:168-172 161
  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 temperature distribution along the porous pipes, the vertical temperature gradient in space below greenhouse canopy and the relation between temperature gradient and its main influencing factors on the basis of heat dissipation of pores, the heating system of greenhouse canopy with hot blast based on porous pipes was established with inlet temperature, inlet pressure and diameter of outlet as the experimental factors. Through thermal insulating porous pipes, the temperature of the front outlets, middle outlets and end outlets of porous pipes and its distribution in vertical space were measured. The results showed that the outlet temperature decreased along the porous pipes, while the temperature in vertical space decreased after an increasing trend. Under different inlet temperatures and inlet pressures, the temperature in 800-1200 mm height space of thermal insulated room rose 2.5-6.2°C.
  Number of references:21
  Main heading:Pipe
  Controlled terms:Energy utilization  -  Greenhouses  -  Thermal gradients
  Uncontrolled terms:Experimental factors  -  Greenhouse energy  -  Heating experiment  -  Heating system  -  Influencing factor  -  Inlet pressures  -  Inlet temperature  -  Outlet temperature  -  Thermal-insulating  -  Vertical space   -  Vertical temperature gradients  -  With inlets
  Classification code:402.1 Industrial and Agricultural Buildings  -  525.3 Energy Utilization  -  619.1 Pipe, Piping and Pipelines  -  641.1 Thermodynamics
  DOI:10.6041/j.issn.1000-1298.2012.04.031
  Database:Compendex

4. Accession number:20122515129813
  Title:Nonlinear identification of excavator arm's electro-hydraulic servo system
  Authors:Li, Bo1 ; Yan, Jun1 ; Liu, Anxin1 ; Zeng, Yonghua1 ; Guo, Gang1 
  Author affiliation:1  Engineering Institute of Corps of Engineer, PLA University of Science and Technology, Nanjing 210007, China
  Corresponding author:Yan, J. (6219033@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:20-25 131
  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 that there are unmodeled dynamics by theoretic modeling and it is also difficult to identify, a Pseudo-Hammerstein-Wiener model with cascade connection of a two-segment polynomial nonlinearity block, a time-invariant linear system, and a backlash nonlinear term was adopted to model the electro-hydraulic servo system of excavator arm. The key term separation principle was used to decompose the model into a linear-in-parameter format, and a refined recursive least square method supplemented with the estimation of internal variables was proposed to identify the decomposed parameters. Experiments demonstrated that the identified Pseudo-Hammerstein-Wiener model approximated the actual system well. Comparing with Hammerstein and ARX model, the error of the Pseudo-Hammerstein-Wiener was reduced by 29% and 68%, respectively.
  Number of references:14
  Main heading:Construction equipment
  Controlled terms:Excavation  -  Excavators  -  Hydraulic servomechanisms  -  Linear systems
  Uncontrolled terms:Actual system  -  ARX model  -  Electro hydraulic servo system  -  Internal variables  -  Nonlinear identifications  -  Nonlinear terms  -  Polynomial nonlinearities  -  Recursive least square methods  -  Separation principle  -  Time invariants   -  Unmodeled dynamics
  Classification code:405.1 Construction Equipment  -  405.2 Construction Methods  -  732.1 Control Equipment  -  921 Mathematics  -  961 Systems Science
  DOI:10.6041/j.issn.1000-1298.2012.04.005
  Database:Compendex

5. Accession number:20122515129835
  Title:Lycopene Content Prediction Based on Support Vector Machine with Particle Swarm Optimization
  Authors:Liu, Wei1, 2 ; Wang, Jianping1 ; Liu, Changhong3 ; Ying, Tiejin3  
  Author affiliation:1  School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
                 2  Key Laboratory of Machine Vision and Intelligence Control Technology, Hefei University, Hefei 230601, China
                 3  School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
  Corresponding author:Ying, T. (yingtiejin22@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:143-147 155
  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:Color-difference was presented to assess the lycopene content conveniently and non-destructively. Due to excessive affecting factors and strong correlation among the parameters in the process, the support vector machine (SVM) was used to set up the predict model. The selection and simplification of the feature parameters was discussed. A compound optimal objective function based on Akaike information criterion (AIC) was constructed. The particle swarm optimization (PSO) algorithm was used to search the optimal value of the objective function and enhance the efficiency. The predictable method had good performance in assessing the lycopene content of different maturity stages.
  Number of references:16
  Main heading:Support vector machines
  Controlled terms:Colorimetry  -  Particle swarm optimization (PSO)
  Uncontrolled terms:Affecting factors  -  Akaike information criterion  -  Color difference  -  Feature parameters  -  Lycopene content  -  Lycopenes  -  Maturity stages  -  Objective functions  -  Optimal values  -  Particle swarm optimization algorithm   -  Prediction-based  -  Strong correlation
  Classification code:723 Computer Software, Data Handling and Applications  -  941.4 Optical Variables Measurements
  DOI:10.6041/j.issn.1000-1298.2012.04.027
  Database:Compendex

6. Accession number:20122515129842
  Title:Midvein extraction for 3-D corn leaf model based on parameterization
  Authors:Zhao, Yuandi1 ; Wen, Weiliang1 ; Guo, Xinyu1 ; Xiao, Boxiang1 ; Lu, Shenglian1 ; Sun, Zhihui1 
  Author affiliation:1  Beijing Research Center for Information Technology in Agriculture, Beijing 100097, China
  Corresponding author:Guo, X. (guoxy@nercita.org.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:183-187
  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 is significant for constructing real corn leaf model by extracting midvein from 3-D point cloud model. Three algorithms, including curvature computation of meshes, parameterization of meshes and skeleton extraction of point cloud, were used to extract midvein from 3-D point cloud model. The whole algorithm was consisted of three steps, including incomplete 3-D point cloud extraction of midvein, complete point cloud extraction of midvein and 3-D midvein reconstruction. Through experiments on different kinds of corn leaves, it indicated that the proposed algorithm could extract the midvein of corn leaf faithfully with less runtime.
  Number of references:20
  Main heading:Three dimensional
  Controlled terms:Algorithms  -  Mathematical models  -  Parameterization  -  Three dimensional computer graphics
  Uncontrolled terms:Corn  -  Leaf  -  Model-based OPC  -  Point cloud  -  Runtimes  -  Skeleton extraction
  Classification code:723.5 Computer Applications  -  902.1 Engineering Graphics  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.04.034
  Database:Compendex

7. Accession number:20122515129819
  Title:Simulation and experiment of inside-filling air-blow precision metering device for rapeseed
  Authors:Liao, Qingxi1 ; Yang, Bo1 ; Li, Xu1 ; Liao, Yitao1 ; Zhang, Ning1 
  Author affiliation:1  College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
  Corresponding author:Liao, Q. (liaoqx@mail.hzau.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:51-54
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A prototype of inside-filling air-blow seed-metering device was developed to overcome the deficiency of mechanical precision metering device with high rate of cell blocked and seeds absent. Simulation analysis of flow in the prototype was carried out with software ANSYS/CFX. The simulation results showed that the pressure fluctuation in the prototype with stomata was fewer 93 Pa than it without stomata. The laboratory test results indicated that seeding performances of the seed-metering devices with stomata was much better than it without stomata: quality of feed index and miss index of the devices without air-blowing drop, with no-stomata air-blowing drop and with stomata air-blowing drop was 66.8%, 78.4 %, 82.0% and 14.4%, 4.4%, 2.4%, respectively.
  Number of references:10
  Main heading:Computer software
  Controlled terms:Drops  -  Experiments  -  Oilseeds  -  Pneumatic materials handling equipment  -  Software prototyping
  Uncontrolled terms:Air-blow  -  Laboratory experiments  -  Metering devices  -  Rapeseed  -  Simulation
  Classification code:443.1 Atmospheric Properties  -  691.1 Materials Handling Equipment  -  723 Computer Software, Data Handling and Applications  -  723.1 Computer Programming  -  821.4 Agricultural Products  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.04.011
  Database:Compendex

8. Accession number:20122515129847
  Title:Electrostatic-nonlinear beam coupling problem solved by galerkin spectral method
  Authors:Lin, Xiezhao1 ; Ying, Ji2  
  Author affiliation:1  School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China
                 2  Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
  Corresponding author:Ying, J. (yingji_zju@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:208-211
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract:An undamped mode of pre-stressed straight beam was used as spectral function of Galerkin mapping to solve the dynamic problem for electrostatic-nonlinear beam coupling. The dynamic process of Pull-in and Pull-off for device was simulated. The proposed model was validated by comparing with the finite element results and the literature results. It was indicated that the proposed model not only had fast simulation ability with different action loads, but also suit for fast predicting the device characters variation with the different geometry size and different material parameters. The calculating results had sufficient accuracy and the computational costs were significantly reduced.
  Number of references:6
  Main heading:Galerkin methods
  Controlled terms:Computer simulation  -  Electrostatics  -  Finite element method  -  Spectroscopy
  Uncontrolled terms:Beam coupling  -  Computational costs  -  Different geometry  -  Dynamic problem  -  Dynamic process  -  Fast simulation  -  Finite Element  -  Galerkin  -  Galerkin spectral method  -  Material parameter   -  Pre-stressed  -  Pull-in  -  Pull-off  -  Spectral function  -  Undamped modes
  Classification code:701.1 Electricity: Basic Concepts and Phenomena  -  723.5 Computer Applications  -  801 Chemistry  -  921.6 Numerical Methods
 DOI:10.6041/j.issn.1000-1298.2012.04.039
  Database:Compendex

9. Accession number:20122515129826
  Title:Tolerance of saccharomyces cerevisiae and pachysolen tannophilus to diluted acid hydrolysis inhibitor
  Authors:Yang, Peizhou1 ; Zheng, Zhi1 ; Luo, Shuizhong1 ; Jiang, Shaotong1 ; Chen, Miaolin1 ; Gao, Shurui1 
  Author affiliation:1  School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
  Corresponding author:Yang, P. (yangpeizhou@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:88-92
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The tolerance of Saccharomyces cerevisiae and Pachysolen tannophilus to inhibitors including furfural, 5-hydroxymethyl furfural and levulinic acid in diluted acid hydrolysis from rape straw was investigated. S. cerevisiae was capable of tolerating 2 g/L furfural, 2 g/L 5-hydroxymethyl furfural and 8 g/L levulinic acid in glucose broth. However, ethanol production by P. tannophilus was strongly inhibited in xylose broth added with 2 g/L furfural, 2 g/L 5-hydroxymethyl furfural and 8 g/L levulinic acid, respectively. In glucose broth containing 2 g/L furfural, the ethanol yields of S. cerevisiae and P. tannophilus were respectively 85.05% and 46.70% compared with those of the control, while in xylose broth added with 2 g/L furfural, the ethanol yield of P. tannophilus was 12.40% compared with that of the control. Enzymatic hydrolysis of rape straw could effectively relieve the inhibition of 2 g/L furfural on both the S. cerevisiae and P. tannophilus, whose ethanol yields were respectively 98.40% and 91.00% compared with those of the control. The results showed that the tolerance capacity of S. cerevisiae on fermentation inhibitors including furfural, 5-hydroxymethyl furfural and levulinic acid was stronger than that of P. tannophilus.
  Number of references:16
  Main heading:Aldehydes
  Controlled terms:Enzymatic hydrolysis  -  Ethanol  -  Fits and tolerances  -  Furfural  -  Glucose  -  Hydrolysis  -  Methanol  -  Organic acids  -  Straw  -  Yeast
  Uncontrolled terms:Acid hydrolysis  -  Ethanol production  -  Ethanol yield  -  Levulinic acid  -  Pachysolen tannophilus  -  S.cerevisiae
  Classification code:601 Mechanical Design  -  801.2 Biochemistry  -  802.2 Chemical Reactions  -  804.1 Organic Compounds  -  821.5 Agricultural Wastes
  DOI:10.6041/j.issn.1000-1298.2012.04.018
  Database:Compendex

10. Accession number:20122515129823
  Title:Design of multi-dimensional vibration screening test bench based on parallel mechanism
  Authors:Wang, Chengjun1 ; Li, Yaoming1 ; Ma, Lüzhong2 
  Author affiliation:1  Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Ministry of Education and Jiangsu Province, Zhenjiang 212013, China
                 2  School of Mechanical Engineering, 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:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:70-74 112
  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:Multi-dimensional vibration screening test bench based on the theory of parallel mechanism was designed to solve the problem that multi-dimensional vibration could not be attained by traditional vibration screening device. This multi-dimensional vibration screening test bench took fully decoupled multi-dimensional main exciting mechanism as center, and adopted high-power linear motor as linear reciprocating vibration power source. It had the characteristics of shorter driving chain and convenient adjustment of mechanical structure and motion parameters to obtain material pellets vibration performance under several conditions and motion law of material on the screen. The test bench used computer and PMAC control card as the core of hardware control system. Measurement and control software system could collect real-timely, display, process and analyze the amplitude, velocity, frequency, torque and power to provide the design basis of multi-dimensional vibration equipment.
  Number of references:10
  Main heading:Mechanisms
  Controlled terms:Computer hardware  -  Design  -  Screening
  Uncontrolled terms:Control cards  -  Hardware control  -  High-power  -  Hybrid  -  Measurement and control  -  Mechanical structures  -  Motion law  -  Motion parameters  -  Multi-dimensional vibration  -  Parallel mechanisms   -  Power sources  -  Screening devices  -  Screening tests  -  Test benches  -  Vibration equipments
  Classification code:408 Structural Design  -  524 Solid Fuels  -  601.3 Mechanisms  -  722 Computer Systems and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.04.015
  Database:Compendex

11. Accession number:20122515129838
  Title:Intelligent monitoring system for orchard pump house based on PSTN and PLMN
  Authors:Dai, Qiufang1 ; Hong, Tiansheng2 ; Song, Shuran1 ; Zhang, Jinyang3 ; Ruan, Yaocan3 ; Zhang, Cheng3 
  Author affiliation:1  Key Laboratory of Key Technology on Agricultural Machinery and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
                 2  Machinery Laboratory of Research System, South China Agricultural University, Guangzhou 510642, China
                 3  College of Engineering, 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:4
  Issue date:April 2012
  Publication year:2012
  Pages:162-167
  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 finding a way to guard against theft and operate irrigation and spray equipment automatically of remote orchard pump house, an intelligent monitoring system was developed and tested. The system can accomplish two functions, including telephone dialing alarm and remote control with micro controller unit as the core, with dual-tone multi-frequency remote data transmission technology. The system was tested in the given orchard and it proved that the successful rate of accomplishing the functions was 96.5%, the alarm average response time was 4.58 s, the remote controlling average response time was 23.27 s, and every time the cost of communication was the normal telephone fee. Experiments show that the system can accomplish its functions and satisfy the requirements of guarding against theft and remote controlling irrigation and spray equipment of orchard pump house.
  Number of references:15
  Main heading:Orchards
  Controlled terms:Controllers  -  Crime  -  Houses  -  Intelligent control  -  Irrigation  -  Pumps  -  Remote control  -  Response time (computer systems)  -  Telephone  -  Telephone sets   -  Telephone systems
  Uncontrolled terms:Guard against theft  -  Intelligent monitoring systems  -  Multi frequency  -  Pump house  -  Remote controlling  -  Remote data  -  Spray equipment
  Classification code:821.3 Agricultural Methods  -  732.1 Control Equipment  -  731.1 Control Systems  -  971 Social Sciences  -  722.4 Digital Computers and Systems  -  618.2 Pumps  -  402.3 Residences  -  718.1 Telephone Systems and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.04.030
  Database:Compendex

12. Accession number:20122515129843
  Title:Maize purity identification based on improved DBSCAN algorithm
  Authors:Liu, Shuangxi1 ; Wang, Pan1 ; Zhang, Chunqing2 ; Wang, Jinxing1  
  Author affiliation:1  Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Shandong Agricultural University, Taian 271018, China
                 2  College of Agriculture, Shandong Agricultural University, Taian 271018, China
  Corresponding author:Wang, J. (jinxingw@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:188-192
  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 identify maize purity rapidly and efficiently, the image processing technology and clustering algorithm were studied according to the maize seed and characteristics of the seed images. An improved DBSCAN on the basis of farthest first traversal algorithm (FFT) adapting to maize seeds purity identification was proposed. The color features parameters of the RGB, HIS and Lab color models of maize crown core area were extracted. H, S and B were selected to be the effective characteristic vector. The abnormal points of different density characteristic vector points were separated by FFT. Then clustering results were combined after local density cluster by DBSCAN. Experiment results showed that the method played a great role in improving the accuracy of maize purity identification.
  Number of references:19
  Main heading:Clustering algorithms
  Controlled terms:Fast Fourier transforms  -  Identification (control systems)  -  Image processing
  Uncontrolled terms:Abnormal point  -  Characteristic vectors  -  Clustering  -  Clustering results  -  Color features  -  Color models  -  Crown core  -  DBSCAN  -  DBSCAN algorithm  -  Effective characteristics   -  Image processing technology  -  Local density  -  Maize  -  Maize seeds  -  Traversal algorithms
  Classification code:721 Computer Circuits and Logic Elements  -  731.1 Control Systems  -  741 Light, Optics and Optical Devices  -  921.3 Mathematical Transformations
  DOI:10.6041/j.issn.1000-1298.2012.04.035
  Database:Compendex

13. Accession number:20122515129828
  Title:Nutrient transformation during swine manure co-composting with flyash under aerobic conditions
  Authors:Li, Ronghua1 ; Zhang, Guangjie1 ; Qin, Rui1 ; Zhang, Zengqiang1  
  Author affiliation:1  College of Resources and Environment, Northwest A and F University, Yangling, Shaanxi 712100, China
  Corresponding author:Zhang, Z. (zhangzq58@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:100-105 142
  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:Swine manure was mixed with corn stalk powder as a bulking agent, and the mixtures were amended with flyash at 0, 2.5%, 5.0%, 7.5% and 10% and composted for 90 days. Addition of flyash raised the pH value of the swine manure compost throughout the composting period, but significant inhibited the rise of electricity conductivity during the later period with the ratio of flyash increasing. C/N ratio decreased according to composting time, whereas total N showed an opposite trend for all treatments except 10% flyash was amended. There was no significant loss of NH4 -N during the thermophilic phase by ash amendment. While, addition of flyash also inhibited the nitrification process as indicated by the lower soluble NO3-N content in ash-amended swine manure composts but had no effect on TP and TK increasing. The GI and germination rate of potherb mustard (Ardisiasquamulosa presl) seed increased with composting time, while the root growth was significant inhibited when flyash was amended and the germination rate indicated that flyash amendment did not affect compost maturity in 90 days composting.
  Number of references:25
  Main heading:Manures
  Controlled terms:Composting  -  Cultivation  -  Fly ash  -  Nitrification  -  Nutrients
  Uncontrolled terms:Aerobic  -  Aerobic condition  -  Bulking agents  -  C/N ratio  -  Cocomposting  -  Compost  -  Compost maturity  -  Corn stalk  -  Germination rates  -  N content   -  Nitrification process  -  pH value  -  Root growth  -  Swine manure  -  Swine manure compost  -  Thermophilic phase
  Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal  -  452.3 Industrial Wastes  -  802.2 Chemical Reactions  -  804 Chemical Products Generally  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.04.020
  Database:Compendex

14. Accession number:20122515129810
  Title:Design and test of semi-active air suspension system of vehicle
  Authors:Wang, Ruochen1 ; Chen, Long1 ; Zhang, Xiaoliang1 ; Zhu, Xinghua1 
  Author affiliation:1  Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Chen, L. (chenlong@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:6-9 136
  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:The mathematical model of semi-active air suspension was built. Adjustable damper, semi-active air suspension controller and bench test system were designed. On the basis of simulation, adjustable damper and 1/4 model of semi-active air suspension bench were tested, the influence of semi-active air suspension and its control system to vehicle dynamic performance were analyzed. Calculation and test results were basically identical. The ride comfort of vehicles was improved.
  Number of references:8
  Main heading:Suspensions (components)
  Controlled terms:Automobile suspensions  -  Computer simulation  -  Fuzzy control  -  Mathematical models  -  Vehicles
  Uncontrolled terms:Adjustable damper  -  Air suspension  -  Bench tests  -  Design and tests  -  Ride comforts  -  Semi-active  -  Vehicle dynamic performance
  Classification code:432 Highway Transportation  -  601.2 Machine Components  -  632.1 Hydraulics  -  723.5 Computer Applications  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.04.002
  Database:Compendex

15. Accession number:20122515129837
  Title:Temperature homogeneity control of greenhouse based on CFD simulation model
  Authors:Li, Yongbo1, 2 ; Zhou, Wei1 ; Li, Pengfei1 ; Wang, Xiaochan1, 2 ; Ding, Weimin1, 2 
  Author affiliation:1  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
                2  Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:Li, Y. (bewit@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:156-161
  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 precise control effect of greenhouse environmental factors, an innovative optimization control system arithmetic based on CFD was presented. By using orthogonal experiment in DOE, controller design in the optimal system was obtained, meanwhile, iteration times of CFD could be reduced as soon as possible. Taking control temperature field as an example, through setting up temperature distribution index and making its minimum by the strategy of using iterative algorithm with CFD calculated, the difference of temperature distribution could be decreased. The greenhouse comprehensive production efficiency was improved. Lastly, an experiment was illustrated by proposed method. The results showed that the algorithm was proved to achieve the control law easily.
  Number of references:16
  Main heading:Controllers
  Controlled terms:Algorithms  -  Computational fluid dynamics  -  Computer simulation  -  Control theory  -  Experiments  -  Greenhouse effect  -  Greenhouses  -  Temperature distribution
  Uncontrolled terms:CFD simulations  -  Control laws  -  Control temperatures  -  Controller designs  -  DOE  -  Environmental factors  -  Homogeneity  -  Iteration time  -  Iterative algorithm  -  Optimization control   -  Orthogonal experiment  -  Precise control  -  Production efficiency
  Classification code:921 Mathematics  -  901.3 Engineering Research  -  732.1 Control Equipment  -  731.1 Control Systems  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  641.1 Thermodynamics  -  451 Air Pollution  -  402.1 Industrial and Agricultural Buildings
  DOI:10.6041/j.issn.1000-1298.2012.04.029
  Database:Compendex

16. Accession number:20122515129836
  Title:Extraction optimization and antioxidant activity of glycoprotein from camellia oleifera seed
  Authors:Li, Tingting1, 2 ; Zhang, Hui1 ; Wu, Caie2 ; Fan, Gongjian2 
  Author affiliation:1  Food Science and Technology, Jiangnan University, Wuxi 214122, China
                 2  College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
  Corresponding author:Zhang, H. (zhanghui@jiangnan.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:148-155
  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 optimum extraction technology and antioxidant activity of glycoprotein from Camellia oleifera seed were performed for future development and utilization of the Camellia oleifera. On the base of single-factor experiment, the optimum parameters of extraction for glycoprotein from Camellia oleifera seed were determined by response surface methodology. The antioxidant activity of glycoprotein was examined by using various antioxidant assays with vitamin C co-assayed as positive control. As a result, the optimized condition of glycoprotein extraction was as follows: extraction time of 8.81 h, salinity of 0.12 mol/L, pH value of 8.77, ratio of liquid to solid of 11.62 mL/g. At the optimum conditions, the yield of protein reached to 8.76%, and the yield of saccharide reached to 10.14%. The results of above antioxidant tests demonstrated that the glycoprotein from Camellia oleifera seed has certain antioxidant activities.
  Number of references:25
  Main heading:Glycoproteins
  Controlled terms:Extraction  -  Optimization
  Uncontrolled terms:Antioxidant  -  Antioxidant activities  -  Extraction technology  -  Extraction time  -  Oleifera  -  Optimized conditions  -  Optimum conditions  -  Optimum parameters  -  pH value  -  Response surface methodology   -  Vitamin C
  Classification code:461.9 Biology  -  802.3 Chemical Operations  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.04.028
  Database:Compendex

17. Accession number:20122515129848
  Title:Kinematic performance analysis of 3-SPS-S spatial rotation parallel mechanism
  Authors:Zhang, Yanwei1 ; Wei, Bin2 ; Wang, Nan1 ; Xie, Lichen2 
  Author affiliation:1  College of Mechanical and Electrical Engineering, Hebei University of Engineering, Handan 056038, China
                 2  Equipment Manufacturing College, Hebei University of Engineering, Handan 056038, China
  Corresponding author:Zhang, Y. (zhangyanwei@hebeu.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:212-215 207
  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 practical requirements, a 3-SPS-S parallel manipulator mechanism was proposed to be rotation fine-tuning manipulator in shield tunneling machines. Also the kinematics of the mechanism was investigated. Furthermore, the local stiffness, local dexterity and driving force which were important factors for evaluating the performance of the mechanisms on the basis of kinematic model, inverse kinematics and Jacobian matrix were investigated. The kinematic performance of the mechanism was evaluated according to the specific requirements. The results showed that the proposed mechanism had good kinematic performances and could be used in fields like shield tunneling machines.
  Number of references:10
  Main heading:Manipulators
  Controlled terms:Automobile drivers  -  Inverse kinematics  -  Jacobian matrices  -  Kinematics  -  Mechanisms  -  Shielding  -  Stiffness
  Uncontrolled terms:Dexterity  -  Driving forces  -  Driving performance  -  In-field  -  Kinematic model  -  Parallel manipulators  -  Parallel mechanisms  -  Performance analysis  -  Spatial rotation
  Classification code:951 Materials Science  -  931.1 Mechanics  -  921.1 Algebra  -  731.5 Robotics  -  622 Radioactive Materials  -  601.3 Mechanisms  -  432 Highway Transportation  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties
  DOI:10.6041/j.issn.1000-1298.2012.04.040
  Database:Compendex

18. Accession number:20122515129845
  Title:Variable frequency electro-hydraulic velocity control system based on energy regulation strategy
  Authors:Shen, Haikuo1 ; Zhi, Shaodan1 ; Jin, Bo2 
  Author affiliation:1  School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
                 2  The State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
  Corresponding author:Shen, H. (Shenhk@bjtu.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:197-201
  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:A variable frequency electro-hydraulic control system based on energy regulation was developed to improve slow respondence of the conventional variable frequency electro-hydraulic systems. An energy regulation device which could store redundant energy while hydraulic system was in decelerating period as well as release energy while the system was in accelerating period was employed in the variable frequency electro-hydraulic control system. This will enhance the dynamic characteristics of the variable frequency electro-hydraulic control system. The experiments results which were compared with two other control systems showed that the variable frequency electro-hydraulic control system had excellent dynamic characteristics which like valve control systems. Furthermore, the throttle and relief energy loss of this system was little and even lower than conventional variable frequency hydraulic control systems.
  Number of references:9
  Main heading:Energy policy
  Controlled terms:Control systems  -  Energy dissipation  -  Hydraulic equipment  -  Hydraulic machinery  -  Velocity control
  Uncontrolled terms:Dynamic characteristics  -  Electro-hydraulic control systems  -  Electro-hydraulic system  -  Electro-hydraulics  -  Energy regulation  -  Hydraulic control systems  -  Hydraulic cylinders  -  Hydraulic system  -  Variable frequencies
  Classification code:525.4 Energy Losses (industrial and residential)  -  525.6 Energy Policy  -  632.2 Hydraulic Equipment and Machinery  -  731.1 Control Systems  -  731.3 Specific Variables Control
  DOI:10.6041/j.issn.1000-1298.2012.04.037
  Database:Compendex

19. Accession number:20122515129809
  Title:Dynamics characteristic simulation and test of pump of hydraulic control unit of ESP
  Authors:Wang, Weiwei1 ; Song, Jian1 ; Li, Liang1 ; Yu, Liangyao1 ; Li, Hongzhi1 
  Author affiliation:1  State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
  Corresponding author:Song, J. (daesj@tsinghua.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:1-5 14
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Through the research of pump in hydraulic control unit (HCU) of electronic stability program (ESP), a design method that actively build up brake pressure without pre-pressure was established. After that, a simulation model in AMESim to analyze the structure parameters of the HCU of ESP was proposed, especially the influence to increasing pressure rate with different pump flows and motor speed parameters. Based on the above, the pump flow and motor type can be defined when the hardware was matched by ESP. Finally, a bench test was carried out to prove the function of the pump that could build up pressure without a prepressing unit.
  Number of references:12
  Main heading:Pumps
  Controlled terms:Computer simulation  -  Hydraulic machinery
  Uncontrolled terms:Bench tests  -  Brake pressure  -  Build-up pressure  -  Design method  -  Dynamics characteristic  -  Electronic stability programs  -  Hydraulic control  -  Motor speed  -  Pre-pressure  -  Prepressing   -  Pump flow  -  Simulation model  -  Structure parameter
  Classification code:618.2 Pumps  -  632.2 Hydraulic Equipment and Machinery  -  723.5 Computer Applications
  DOI:10.6041/j.issn.1000-1298.2012.04.001
  Database:Compendex

20. Accession number:20122515129822
  Title:Movement process analysis on processing tomato fruit separation device
  Authors:Li, Chengsong1 ; Kan, Za1 ; Tan, Hongyang1 ; Sun, Ribin1 ; Liang, Rongqing1 ; Feng, Yulei1 
  Author affiliation:1  College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
  Corresponding author:Kan, Z. (kz-shz@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:66-69
  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 further study mechanism on the processing tomato separation, separation device vibrator movement was analyzed. Its theoretical model by using d'Alembert principle was established. Virtual prototype movement based on SolidWorks was simulated. Separation roller motion process was filmed by high-speed camera on homemade FS-35 type separation test rig and the test video was analyzed by blasting software Blaster's Mas. The simulation results and test analysis showed separation unit movement followed the rule of theoretical model, which verified the correctness of the theoretical derivation.
  Number of references:9
  Main heading:Separation
  Controlled terms:Fruits  -  High speed cameras  -  Software testing  -  Vibrators
  Uncontrolled terms:D'Alembert principle  -  Kinematic Analysis  -  Movement-based  -  Process analysis  -  Separation devices  -  Separation units  -  SolidWorks  -  Test analysis  -  Test rigs  -  Theoretical derivations   -  Theoretical models  -  Tomato fruits  -  Virtual prototype
  Classification code:691.1 Materials Handling Equipment  -  723.5 Computer Applications  -  742.2 Photographic Equipment  -  802.3 Chemical Operations  -  821.4 Agricultural Products
  DOI:10.6041/j.issn.1000-1298.2012.04.014
  Database:Compendex

21. Accession number:20122515129832
  Title:Kinetics model of drum drying of pumpkin pulp
  Authors:Wang, Jin1 ; Li, Shujun1 ; Lin, Yaling1 ; Yang, Yanchen1 ; Zhao, Qingliang1 ; Han, Qinghua1 
  Author affiliation:1  Chinese Academy of Agricultural Mechanization Sciences, 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:4
  Issue date:April 2012
  Publication year:2012
  Pages:126-131
  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:Drum drying characteristics of pumpkin pulp were investigated by using a single drum dryer with applicator rolls. The drum drying process was divided into two phases: pulp phase and flake phase. Under these two conditions, moisture content of the samples under different steam pressures was measured in order to analyze the relationship of the drying rate with the inner pressure and drying time. It indicated from the results that, most of the moisture evaporated during the pulp phase. The higher the steam pressure was, the higher the drying rate became. It was also shown that during the flake phase, only falling rate period was taken place. As the steam pressure increased, on one hand, the initial moisture content of flake phase became less and the drying rate became decreased, on the other hand, the decreasing of the drying rate was slow down and the drying time was much shorter. The experimental moisture loss data were fitted with 10 thin-layer drying models. Consequently, of all the drying models, a semi-theoretical Midilli-Kucuk model was fitted best.
  Number of references:10
  Main heading:Drying
  Controlled terms:Enzyme kinetics  -  Food technology  -  Moisture  -  Plants (botany)
  Uncontrolled terms:Drying characteristics  -  Drying model  -  Drying process  -  Drying rates  -  Drying time  -  Falling-rate period  -  Initial Moisture Content  -  Inner pressure  -  Kinetics models  -  Moisture loss   -  Steam pressures  -  Thin layer drying
  Classification code:461.8 Biotechnology  -  461.9 Biology  -  642.1 Process Heating  -  801.4 Physical Chemistry  -  822 Food Technology
  DOI:10.6041/j.issn.1000-1298.2012.04.024
  Database:Compendex

22. Accession number:20122515129851
  Title:Mechanical press six-link mechanism design based on multi-objective
  Authors:Song, Qingyu1, 2 ; Li, Jian2 ; Yin, Wenqi2 
  Author affiliation:1  College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
                 2  Dalian Design and Research Institute Co., Ltd., CFHI, Dalian 116600, China
  Corresponding author:Song, Q. (song.qy@cfhi.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:225-229 234
  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:Six-link transmission mechanism optimization design was proposed with the multi-objective demand of path, velocity and acceleration. A brief uniform mathematical description of the slide motion path was established using Fourier series theory. Then the formulas of the slide velocity and acceleration were obtained. According to the constraint conditions of mechanism engineering design, taking the minimum deviation error of slide kinematics data and the minimum mechanism height as the optimization object, the optimization model of transmission mechanism design was established. It was performed by the composite optimization algorithms based on penalty function and complex algorithm. The validity and effectiveness of the proposed method were verified by a practical instance.
  Number of references:6
  Main heading:Multiobjective optimization
  Controlled terms:Algorithms  -  Fourier series  -  Machine design  -  Presses (machine tools)
  Uncontrolled terms:Mechanical press  -  Motion path  -  Multi objective  -  Optimization design  -  Transmission mechanisms
  Classification code:601 Mechanical Design  -  603.1 Machine Tools, General  -  723 Computer Software, Data Handling and Applications  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.04.043
  Database:Compendex

23. Accession number:20122515129811
  Title:Modeling and simulation of hydraulic wheel motor propulsion system for heavy truck
  Authors:Li, Sheng1 ; Song, Dafeng2 ; Zeng, Xiaohua2 ; He, Hui2 ; Nie, Liwei2 ; Wang, Jixin2 
  Author affiliation:1  FAW Jiefang Automotive Co., Ltd., Qingdao 266043, China
                 2  State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
  Corresponding author:Zeng, X. (zeng.xiaohua@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:10-14
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:By adding a hydraulic propulsion system made up of pumps and motors primarily in a traditional heavy vehicle, it is changed to a four-wheel driven vehicle from a two-wheel driven vehicle. The principle of the system configuration and working modes were analyzed. The system dynamics equations were established. The whole vehicle system was modeled by a co-simulation method with Matlab/Simulink and AMESim software. The vehicle's traction force and climbing capacity was simulated and compared. The results showed that after using the hydraulic propulsion system, the vehicle traction force was increased by 13.4% and the climbing capacity was improved by 14.4%, which means the vehicle passability was also improved significantly.
  Number of references:10
  Main heading:Vehicles
  Controlled terms:Computer simulation  -  Propulsion  -  Traction (friction)  -  Wheels
  Uncontrolled terms:Climb grade  -  Cosimulation  -  Heavy vehicle  -  Propulsion system  -  Traction forces
  Classification code:432 Highway Transportation  -  601.2 Machine Components  -  682 Railroad Rolling Stock  -  723.5 Computer Applications
  DOI:10.6041/j.issn.1000-1298.2012.04.003
  Database:Compendex

24. Accession number:20122515129817
  Title:Nozzle flow model of PWM variable-rate spraying
  Authors:Zhai, Changyuan1 ; Wang, Xiu2 ; Mi, Yarong1 ; Fan, Pengfei2 ; Ma, Yongbing1 
  Author affiliation:1  College of Mechanical and Electronic Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
                 2  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
  Corresponding author:Wang, X. (wangx@nercita.org.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:40-44
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Nozzle flow model is indispensable in variable-rate spraying control based on pulse width modulation (PWM) technology, especially when nozzles are controlled independently. A variable-rate test platform which could control spraying pressure precisely and was easy to set PWM parameters was designed. The central composite orthogonal regression tests were completed by using the test platform, and the flow models of TEEJET AITXA nozzles of type 8002, 8003 and 8004 were obtained. The results of equation hypothesis test and test for lack of fit of flow models showed that the three flow models were agreeable. The maximum relative error of the TEEJET AITXA nozzle model of type 8002 was 7.05%, while the minimum relative error was 0.14%. For the type 8003, the maximum and minimum relative errors were 7.27% and 0.31%. And for the type 8004, the maximum and minimum relative errors were 7.94% and 0.71%. Nozzle flow model validation trials showed that the relative errors between model flow and actual flow were small.
  Number of references:18
  Main heading:Spray nozzles
  Controlled terms:Errors  -  Pulse width modulation
  Uncontrolled terms:Central composite  -  Flow model  -  Hypothesis tests  -  Lack-of-fit  -  Maximum relative errors  -  Nozzle flow  -  Nozzle models  -  Orthogonal regression  -  Relative errors  -  Spraying pressure   -  Test platforms  -  Variable rate  -  Variable-rate spraying
  Classification code:631.1 Fluid Flow, General  -  716 Telecommunication; Radar, Radio and Television  -  731 Automatic Control Principles and Applications  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.04.009
  Database:Compendex

25. Accession number:20122515129815
  Title:Design of Π-type recycling tunnel sprayer
  Authors:Song, Jianli1 ; He, Xiongkui1 ; Zhang, Jing1 ; Liu, Yajia1 ; Zeng, Aijun1 
  Author affiliation:1  College of Science, China Agricultural University, Beijing 100193, China
  Corresponding author:He, X. (xiongkui@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:31-36
  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 shortcomings of specialized plant protection machinery for trellised vine and the low-level efficiency of pesticide application, a Π-type recycling tunnel sprayer for the liquid that was not retained by the leaves was developed. Spray recycling and deposit in canopy were measured. Results showed that it could increase chemical recovery rate up to 44.0% and 18.4% respectively and increase the deposition on the underside of leaves and leaved inside canopy by assembling booms interlaced and turning nozzles upward. Grid end shield could deflect air direction effectively to increase chemical recovery rate more than 10%.
  Number of references:14
  Main heading:Tunnels
  Controlled terms:Deposition  -  Design  -  Machinery  -  Recovery  -  Recycling
  Uncontrolled terms:Chemical recovery  -  End-shield  -  Plant protection  -  Recycling tunnel sprayers
  Classification code:401.2 Tunnels and Tunneling  -  408 Structural Design  -  452.3 Industrial Wastes  -  531 Metallurgy and Metallography  -  601 Mechanical Design  -  813.1 Coating Techniques
  DOI:10.6041/j.issn.1000-1298.2012.04.007
  Database:Compendex

26. Accession number:20122515129812
  Title:Free form deformation design for auto-body finite element model based on isoparametric transformation
  Authors:Liu, Mingzeng1 ; Li, Baojun1 ; Wang, Changsheng1 ; Hu, Ping1  
  Author affiliation:1  State Key Laboratory of Structural Analysis for Industrial Equipment, 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:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:15-19
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:To improve the efficiency of auto-body design, an algorithm of morphing design for auto-body based on free form deformation and isoparametric transformation was proposed. In this algorithm, the control finite element model (FEM) model was consisted of a collection of polyhedral elements, such as hexahedron, pentahedron and tetrahedron. Then the correspondence of isoparametric transformation between FEM model and control parametric volume was established, and the deformation of control parametric volume was propagated to the embedding FEM model. The algorithm avoided the problem of computational cost of the parameterization of local coordinates through the given isoparametric transformation and its inverse transformation. From the numerical simulation on FEM model of an auto-body, the validity and efficiency of proposed algorithm were verified.
  Number of references:11
  Main heading:Deformation
  Controlled terms:Algorithms  -  Inverse problems
  Uncontrolled terms:Auto-body  -  Auto-body designs  -  Computational costs  -  FEM models  -  Finite element models  -  Free-form deformation  -  Inverse transformations  -  Isoparametric transformation  -  Local coordinate  -  Morphing   -  Polyhedral elements
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.04.004
  Database:Compendex

27. Accession number:20122515129830
  Title:Vehicle route replanning for fruit and vegetable delivery
  Authors:Huang, Huafang1 ; Wang, Yizhong1 ; Li, Da1 ; Men, Jianting1 ; Zhang, Ping2 ; Huang, Guoquan3 
  Author affiliation:1  College of Electronic Information and Automation, Tianjin University of Science and Technology, Tianjin 300222, China
                 2  National Engineering and Technology Research Center for Preservation of Agricultural Products, Tianjin 300384, China
                 3  Department of Industrial and Manufacturing Systems Engineering, The University of Hong Kong, Hong Kong 999077, Hong Kong
  Corresponding author:Huang, H. (huanghf@tust.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:113-118
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:Since fruit and vegetable are highly perishable, and have strong timeliness in selling and consuming, the delivery routes of transport vehicles must be planned reasonably. On the path of fruit and vegetable delivery, a transport vehicle may encounter some unusual circumstances and may not arrive at the next distribution site in time. In this case, the vehicle routes of other transport vehicles should be replanned. A mathematical model for vehicle route replanning with time windows for fruit and vegetable delivery was established, and an improved ant colony algorithm was used to resolve the model. Simulation experiment results showed that the new dispatching routing of fruit and vegetable could be optimized efficiently by using the proposed model and adopted algorithm. This research could provide theoretical support for enterprises which hoped to decrease rot loss of fruit and vegetable, increase sales income and control operating cost effectively.
  Number of references:14
  Main heading:Vehicles
  Controlled terms:Algorithms  -  Computer simulation  -  Fruits  -  Mathematical models  -  Vegetables  -  Vehicle routing
  Uncontrolled terms:Ant colony algorithms  -  Delivery  -  Fruit and vegetables  -  Re-planning  -  Time windows
  Classification code:432 Highway Transportation  -  723.5 Computer Applications  -  821.4 Agricultural Products  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.04.022
  Database:Compendex

28. Accession number:20122515129821
  Title:Elastic dentation roller type sugarcane leaf-stripping device
  Authors:Mou, Xiangwei1 ; Ou, Yinggang1 ; Liu, Qingting1 ; Wu, Hao1 ; Song, Jianming1 
  Author affiliation:1  Key Laboratory of Key Technology on Agricultural Machine and Equipment, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
  Corresponding author:Ou, Y. (ouying@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:60-65
  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 problem of high impurity rate and stalk broken rate existing in the leaf-stripping process of the whole stalk sugarcane combine harvester, the elastic dentation roller type leaf-stripping test device was designed. The main structure of feeding roller, output roller and leaf-stripping roller and the principle of leaf-stripping were introduced. The structure parameters of main parts were determined. The orthogonal experiments were conducted to study the influence between the following four factors, the installation angle of leaf-stripping component, the center distance between the top and bottom leaf-stripping rollers, rotate speed of leaf-stripping rollers and rotate speed of feeding and output rollers, and the following three indexes on leaf-stripping quality, impurity rate, stalk broken rate and top broken rate. The result showed that the optimal parameters were as following: the installation angle of leaf-stripping component was 90°, the center distance between the top and bottom leaf-stripping rollers was 310 mm, rotate speed of leaf-stripping rollers equaled 700 r/min and rotate speed of feeding and output rollers equaled 150 r/min. In the meantime, when the total weight of 319.19 kg sugarcane was fed continuously into the device in the way of single stalk, the impurity rate, stalk broken rate and top broken rate reached to 1.56%, 20.45% and 65.97%. Otherwise, when the total weight of 274.52 kg sugarcane was fed continuously into the device in the way of three to five stalks simultaneously, the final result was 2.38%, 25.93% and 75.59% respectively.
  Number of references:12
  Main heading:Rollers (machine components)
  Controlled terms:Design  -  Feeding  -  Harvesters
  Uncontrolled terms:Center distance  -  Combine harvesters  -  Installation angle  -  Main structure  -  Optimal parameter  -  Orthogonal experiment  -  Roller type  -  Rotate speed  -  Stalk broken rate  -  Structure parameter   -  Test device
  Classification code:408 Structural Design  -  601.2 Machine Components  -  691.2 Materials Handling Methods  -  821.1 Agricultural Machinery and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.04.013
  Database:Compendex

29. Accession number:20122515129849
  Title:Design of 5-axes hybrid robot with several spray guns for collaborative spraying
  Authors:Li, Ju1 ; Zhao, Dean1 ; Shen, Huiping2 ; Deng, Jiaming2 ; Jiang, Yixing2 ; Xu, Wei3 
  Author affiliation:1  School of Electronic and Information Engineering, Jiangsu University, Zhenjiang 212013, China
                 2  College of Mechanical Engineering, Changzhou University, Changzhou 213016, China
                 3  Zhejiang Longyou County Xindi Polymeric Material Co., Ltd., Quzhou 324400, China
  Corresponding author:Zhao, D. (dazhao@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:216-220
  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 parallel mechanism was used in spray painting equipment for large and flat cube workpiece. A 5-axes decoupling hybrid spraying robot was designed. The mechanism design, working principle, kinematical analysis, drive mode, hardware composition and control method of control system for the spraying robot were expounded. The robot had compact structure, high spraying efficiency, uniform coating thickness, simple operation, and good prospect.
  Number of references:10
  Main heading:Machine design
  Controlled terms:Design  -  Mechanisms  -  Robots  -  Spraying  -  Thickness measurement
  Uncontrolled terms:Compact structures  -  Control methods  -  Drive mode  -  Hybrid mechanisms  -  Hybrid robots  -  Kinematical analysis  -  Mechanism design  -  Parallel mechanisms  -  Simple operation  -  Spraying robots   -  Uniform coating  -  Work pieces  -  Working principles
  Classification code:408 Structural Design  -  601 Mechanical Design  -  601.3 Mechanisms  -  731.5 Robotics  -  813.1 Coating Techniques  -  943.2 Mechanical Variables Measurements
  DOI:10.6041/j.issn.1000-1298.2012.04.041
  Database:Compendex

30. Accession number:20122515129829
  Title:Design and implementation of encryption algorithm for aquatic products traceability code
  Authors:Li, Wenyong1 ; Sun, Chuanheng1, 2 ; Liu, Xuexin1 ; Zhou, Chao1 ; Xie, Jing1 ; Yang, Xinting1  
  Author affiliation:1  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
                 2  College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Yang, X. (yangxt@nercita.org.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:106-112
  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 such problems as low-level security of traceability code for agricultural products and difficulty to guarantee the traceability code was unique for one product, taking aquatic products as research object, an encryption algorithm of traceability code for aquatic products was put forward. At the base of analysis to coding solution of traceability code and AES encryption algorithm, the aquatic product was coded. Then, this supervision code was compressed and encrypted by an algorithm namely decimal and equal-length to generate the traceability code for aquatic products. The experimental results showed that the proposed algorithm was feasible and reliable. It ensured the deployment security of traceability system owing to the feature of uniqueness and dynamic cipher of traceability code. An example of the application solution of the encryption algorithm in aquatic products traceability system was introduced.
  Number of references:19
  Main heading:Cryptography
  Controlled terms:Agricultural products  -  Algorithms  -  Product design
  Uncontrolled terms:AES encryption  -  Aquatic products  -  Code compression  -  Encryption algorithms  -  Research object  -  Traceability codes  -  Traceability systems
  Classification code:921 Mathematics  -  913.1 Production Engineering  -  821.4 Agricultural Products  -  723 Computer Software, Data Handling and Applications  -  718 Telephone Systems and Related Technologies; Line Communications  -  717 Optical Communication  -  716 Telecommunication; Radar, Radio and Television
  DOI:10.6041/j.issn.1000-1298.2012.04.021
  Database:Compendex

31. Accession number:20122515129825
  Title:Modeling and engineering optimization of compression process for biomass compound coal mixed with sawdust, rice hull and coal
  Authors:Li, Dazhong1 ; Li, Xiaojiang1 
  Author affiliation:1  Department of Automation, North China Electric Power University, Baoding 071003, China
  Corresponding author:Li, D. (dzli21cn@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:83-87 82
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The compression process LS-SVM model of biomass compound coal mixed with sawdust, coal and rice hull was established according to the published experimental data. The test result showed that the maximum relative error of predicted and experimental values of two models was 3.46% and 5.83%, which proved the efficiency of model. On this base, the multi-objective optimization objective function of compression process was designed and fitted, by which the Pareto optimal solutions were gained in a single run. According to the standard target of solid biomass fuels and CV value which represented the comprehensive performance of biomass compound coal, the efficient solutions that are suitable for compression process were selected from the Pareto optimal solutions under different indicators for compound coal mixed with sawdust, coal and rice hull.
  Number of references:14
  Main heading:Coal
  Controlled terms:Biomass  -  Models  -  Multiobjective optimization  -  Optimal systems  -  Optimization
  Uncontrolled terms:Biomass compound coals  -  Biomass fuels  -  Comprehensive performance  -  Compression process  -  Engineering optimization  -  Experimental data  -  Experimental values  -  Maximum relative errors  -  Multi objective optimizations (MOO)  -  Pareto optimal solutions   -  Rice hulls
  Classification code:524 Solid Fuels  -  525.1 Energy Resources and Renewable Energy Issues  -  902.1 Engineering Graphics  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.04.017
  Database:Compendex

32. Accession number:20122515129852
  Title:2-D micro-displacement turret of ultra-precision lathe
  Authors:Ding, Jinfu1 ; E, Shiju1 ; Zeng, Ping1 ; Sun, Mingli1 ; Zhang, Kehua1 
  Author affiliation:1  College of Engineering, Zhejiang Normal University, Jinhua 321004, China
  Corresponding author:Ding, J. (zsddif@zjnu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:230-234
  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 micro-displacement turret of ultra-precision CNC lathe was designed, which could meet the needs for precision machining. The power source of the turret was piezoelectric displacement actuators. The guide of the turret was double parallel four-pole flexible hinge institution. The main parameters of the turret were the maximum output displacement. The structure of micro-displacement turret was designed and calculated. The stiffness of flexible hinge institution was calculated by theoretical modeling and finite element analysis, and the output displacement of 2-D micro-displacement turret was tested. The results showed that the results theoretical calculations, finite element simulation coincided with experimental data, which could verify the reliable of the design method.
  Number of references:12
  Main heading:Lathes
  Controlled terms:Finite element method  -  Piezoelectric actuators  -  Precision engineering  -  Turning
  Uncontrolled terms:CNC lathe  -  Design method  -  Displacement actuator  -  Experimental data  -  Finite element simulations  -  Flexible hinges  -  Main parameters  -  Maximum output  -  Microdisplacement  -  Power sources   -  Precision machining  -  Theoretical calculations  -  Theoretical modeling  -  Turret  -  Ultra precision
  Classification code:921.6 Numerical Methods  -  761 Nanotechnology  -  732 Control Devices  -  715 Electronic Equipment, General Purpose and Industrial  -  708 Electric and Magnetic Materials  -  604.2 Machining Operations  -  603.1 Machine Tools, General
  DOI:10.6041/j.issn.1000-1298.2012.04.044
  Database:Compendex

33. Accession number:20122515129840
  Title:Development of agricultural opening intelligent mobile platform
  Authors:Gu, Baoxing1 ; Ji, Changying1 ; Wang, Haiqing1 ; Tian, Guangzhao1 ; Zheng, Qinggen1 ; Wang, Ling1 
  Author affiliation:1  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:Ji, C. (chyji@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:173-178 187
  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 agricultural intelligent mobile platform is the premise and basis of farmland intelligent operation, so a prototype of agricultural intelligent operation was developed. It was consisted of mechanical system and control system. The mobile platform can navigate autonomously. It showed a certain openness which could meet various requirement of farmland intelligent operations. The autonomous navigation program and human-machine interface were programmed with VC 6.0. The field navigation tests of the prototype were carried out in the orchard of Feng county in Jiangsu province. Results revealed that this platform performed well in the integrated navigation mode and the error was 0.05 m during straight path movement, whereas in curved path the error increased to 0.11 m.
  Number of references:11
  Main heading:Mobile phones
  Controlled terms:Farms  -  Navigation  -  Navigation systems
  Uncontrolled terms:Autonomous navigation  -  Binocular stereo vision  -  Human Machine Interface  -  Integrated navigation  -  Intelligent operations  -  Jiangsu province  -  Mechanical systems  -  Mobile platform  -  VC 6.0
  Classification code:434.4 Waterway Navigation  -  716.3 Radio Systems and Equipment  -  718.1 Telephone Systems and Equipment  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.04.032
  Database:Compendex

34. Accession number:20122515129827
  Title:Influence of coagulation pretreatment on UF membrane flux of anaerobic fermentation slurry
  Authors:Zhu, Hongguang1 ; Wang, Danyi1 
  Author affiliation:1  Modern Agricultural Science and Engineering Institute, Tongji University, Shanghai 200092, China
  Corresponding author:Zhu, H. (zhuhg@mail.tongji.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:93-99 118
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:In the process of concentrating anaerobic fermentation slurry to commercialized liquid organic fertilizer with membrane filtration devices, UF membrane fouling was always a serious problem. The influence of in-line coagulation pretreatment on UF membrane filtration flux was investigated. The experiment applied six inorganic coagulants (ferric trichloride, ferrous sulfate, aluminum sulfate, potassium sulfate, sodium silicate, PAC), and separately studied the best coagulant and its optimal dosage in two groups. Results showed that ferric trichloride was most efficient and relatively less cost. At FeCl3 dosage of 8 g/L, the stable flux was 14.38 times more than the raw water, and only one third of the PAC dosage with the same effect. With the increasing of ferric trichloride dosage, the stable flux increased first and reached to the maximum under the dosage of 10 g/L, then decreased, which is closely related to re-steady phenomenon. Based on an overall consideration of flux improvement, pollutants removal and dosage, FeCl3 dosage at 8 g/L was considered to be the optimal dosage.
  Number of references:23
  Main heading:Coagulation
  Controlled terms:Biogas  -  Fertilizers  -  Fluxes  -  Membrane fouling  -  Microfiltration  -  Optimization  -  Potassium  -  Silicon compounds  -  Ultrafiltration
  Uncontrolled terms:Aluminum sulfates  -  Anaerobic fermentation slurry  -  Best coagulant  -  Biogas slurry  -  Ferrous sulfate  -  In-line coagulation  -  Inorganic coagulants  -  Membrane filtrations  -  Optimal dosage  -  Organic fertilizers   -  Pollutants removal  -  Potassium sulfate  -  Pre-Treatment  -  Raw water  -  Sodium silicate  -  UF membranes
  Classification code:951 Materials Science  -  921.5 Optimization Techniques  -  804 Chemical Products Generally  -  802.3 Chemical Operations  -  549.1 Alkali Metals  -  538 Welding and Bonding  -  522 Gas Fuels
  DOI:10.6041/j.issn.1000-1298.2012.04.019
  Database:Compendex

35. Accession number:20122515129831
  Title:Rheological properties of extruded okara-maize blend based on extrusion technology
  Authors:Wang, Lijun1 ; Wu, Min2 ; Wang, Yong3 ; Shi, Cong1 ; Li, Dong2 
  Author affiliation:1  College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
2  College of Engineering, China Agricultural University, Beijing 100083, China
                  3  Nutrition and Health Research Institute, COFCO, Beijing 100005, China
  Corresponding author:Wang, L. (wlj@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:119-125
  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:The extruded okara-maize blend was studied on rheological properties to improve the usage of okara and expand the application range. The effects of process temperature, feed moisture, and okara concentration on the rheological properties of okara-maize blend were investigated.The sample was tested in both frequency sweep and creep-recovery test modes. The frequency sweep test data was regressed with power law model. The creep test data could be regressed with Burgers model. Both tests obeyed the corresponding model well.
  Number of references:16
  Main heading:Rheology
  Controlled terms:Creep  -  Extrusion
  Uncontrolled terms:Application range  -  Burgers model  -  Creep tests  -  Creep-recovery test  -  Extrusion technology  -  Frequency sweep  -  Maize blend  -  Okara  -  Power law model  -  Process temperature   -  Rheological property
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  535.2.2 Metal Forming Practice  -  931.1 Mechanics  -  951 Materials Science
  DOI:10.6041/j.issn.1000-1298.2012.04.023
  Database:Compendex

36. Accession number:20122515129846
  Title:Influence of deformation characteristic of rough surface on frictional temperature and contact pressure
  Authors:Huang, Jianmeng1 ; Gao, Chenghui1  
  Author affiliation:1  School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China
  Corresponding author:Gao, C. (gch@fzu.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:202-207
  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 thermo-mechanical coupling model for a flat plane and a rough surface based on 3-D fractal theory was established. The model considered the interaction between asperities, and integrated the heat flux coupling between the sliding surfaces. By using the nonlinear multiphysics field of the ANSYS software, the frictional sliding process of the elastic rough surface and the rigid flat plane (E/R model), and that of the elasto-plastic rough surface and the rigid flat plane (P/R model) were simulated. The frictional temperature, the contact pressure and the contact area under two different deformation characteristic of the rough solid during the sliding process were analyzed. The numerical results from the analysis and simulation showed that the maximum contact temperature of the rough surface rose slowly during the constant sliding. The maximum contact pressure and the contact area fluctuated within a certain range. The contact pressure and the frictional temperature of the elastic contact (E/R model) were larger than those of the elasto-plastic contact (P/R model), but the contact area was much smaller. The results demonstrated that the elasto-plastic deformation of the rough body had significant influence on the result during the thermo-mechanical analysis of the rough solid in the friction.
  Number of references:25
  Main heading:Three dimensional
  Controlled terms:Elastic deformation  -  Elastoplasticity  -  Friction  -  Heat flux  -  Plastic deformation  -  Surface measurement
  Uncontrolled terms:Contact pressures  -  Elastoplastic deformation  -  Frictional temperature  -  Rough surfaces  -  Thermo-mechanical coupling
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  641.2 Heat Transfer  -  818 Rubber and Elastomers  -  902.1 Engineering Graphics  -  931.1 Mechanics  -  943.2 Mechanical Variables Measurements
  DOI:10.6041/j.issn.1000-1298.2012.04.038
  Database:Compendex

37. Accession number:20122515129824
  Title:Torrefaction of agriculture straw and its effect on material and energy characteristics
  Authors:Chen, Yingquan1 ; Yang, Haiping1 ; Zhu, Bo1 ; Hao, Hongmeng1 ; Wang, Xianhua1 ; Chen, Hanping1 
  Author affiliation:1  State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
  Corresponding author:Yang, H. (yhping2002@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:75-82
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:The shortcomings such as high water content, low energy density and difficulty to storage, have limited the large-scale applications of agricultural straw. The torrefaction characteristic of four typical straws in China such as rice straw, cotton stalks, corn stalks, wheat straw, was investigated, which was carried out in the fixed-bed reactor and focused on the evolution of physical and chemical properties of straw during torrefaction. After torrefaction, the apparent volume of agricultural straw was significantly reduced and a more uniform distribution of particle size was observed which suggested the grinding performance could be significantly improved. Meanwhile, the number of solid oxygen-containing functional groups in the solid product reduced. The significantly increasing of the fixed carbon content and the significantly decreasing of the oxygen content improved the heat value of solid products. Although the mass and energy production yield ratio decreased after torrefaction, the energy production yield ratio was better than the mass. The torrefaction was benefit to the improvement of energy property and material characteristics of straw and had a positive effect on the quality of biomass material.
  Number of references:30
  Main heading:Straw
  Controlled terms:Chemical properties  -  Chemical reactors  -  Functional groups  -  Production
  Uncontrolled terms:Agricultural straw  -  Apparent volume  -  Biomass materials  -  Corn stalk  -  Cotton stalk  -  Energy characteristics  -  Energy productions  -  Energy property  -  Fixed carbons  -  Fixed-bed reactors   -  Grinding performance  -  Heat value  -  High water content  -  Infrared analysis  -  Large-scale applications  -  Low energies  -  Material characteristics  -  Oxygen content  -  Physical and chemical properties  -  Rice straws   -  Solid products  -  Torrefaction  -  Uniform distribution  -  Wheat straws
  Classification code:423 Non Mechanical Properties and Tests of Building Materials  -  801 Chemistry  -  802.1 Chemical Plants and Equipment  -  804.1 Organic Compounds  -  821.5 Agricultural Wastes  -  913.2 Production Control
  DOI:10.6041/j.issn.1000-1298.2012.04.016
  Database:Compendex

38. Accession number:20122515129834
  Title:Analysis and experiment on basic properties of poultry eggs
  Authors:Jiang, Song1 ; Qi, Hong1 ; Wang, Guojiang1 ; Jiang, Xiaofeng1 
  Author affiliation:1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Jiang, S. (jszhl@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:137-142
  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:To explore the distribution and the estimation model of the basic geometry parameters related to the automatic direction of the tip side and blunt side of eggs, geometry, quality center location, volume and quality of poultry eggs were measured. Relationships between egg geometry and the volume, quality were studied. The results showed that the geometry and quality of eggs were normal distribution. It was found that the quality center of poultry eggs was at the midpoint of the length. The distance from the quality center to the intersection of the length and the breadth was within 3-5 mm. The supporting method was better than weighing method. The correlation coefficient of estimated volume using standard ellipsoid volume methods and actual volume of native egg, feed egg and duck egg were all more than 0.94. The correlation between the weight and the approximate volume of eggs was better than that with the length, breadth, their ratio in a cubic regression, also that with the oval area over the length in a linear regression. The correlation coefficient of the weight model of native egg, feed egg and duck egg were all more than 0.95.
  Number of references:15
  Main heading:Geometry
  Controlled terms:Freons  -  Normal distribution
  Uncontrolled terms:Basic properties  -  Center locations  -  Correlation coefficient  -  Duck egg  -  Estimation models  -  Geometry parameter  -  Poultry eggs  -  Volume  -  Volume method  -  Weighing method   -  Weight
  Classification code:804 Chemical Products Generally  -  921 Mathematics  -  922.1 Probability Theory
  DOI:10.6041/j.issn.1000-1298.2012.04.026
  Database:Compendex

39. Accession number:20122515129833
  Title:Continuous ohmic heating device of liquid food
  Authors:Wang, Ranran1 ; Tian, Fuyang1 ; Zhu, Min1 ; Zhang, Shifu1 ; Ren, Jie1 ; Li, Fade2  
  Author affiliation:1  Mechanical and Electronic Engineering College, Shandong Agricultural University, Taian 271018, China
                 2  Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Shandong Agricultural University, Taian 271018, China
  Corresponding author:Li, F. (li_fade@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:132-136
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, b Beijing, 100083, China
  Abstract:In order to achieve ohmic heating for liquid food, by using rectifier and inverter technology, continuous ohmic heating device was designed. The equipment was consisted of controllable pulsed power supply, ohmic heating chamber, pump and flow controller. Controllable pulsed power supply can output bipolar-rectangle waveform pulse voltage with high frequency. The frequency, amplitude and duty ratio were adjustable. The output capacity could reach to 50 kW. The result showed that the device could be controlled speedily and easily. It could meet the requirement of liquid food process and without pollution.
  Number of references:12
  Main heading:Liquids
  Controlled terms:Electric power supplies to apparatus  -  Heating equipment  -  Joule heating  -  Optical pumping  -  Thermal processing (foods)
  Uncontrolled terms:Duty ratios  -  Flow controllers  -  Food sterilization  -  Heating chambers  -  Heating devices  -  High frequency  -  Liquid food  -  Pulse voltage  -  Pulsed power supply  -  Wave forms
  Classification code:642.2 Industrial Furnaces and Components  -  701.1 Electricity: Basic Concepts and Phenomena  -  715.2 Industrial Electronic Equipment  -  741.1 Light/Optics  -  822.2 Food Processing Operations  -  931.2 Physical Properties of Gases, Liquids and Solids
  DOI:10.6041/j.issn.1000-1298.2012.04.025
  Database:Compendex

40. Accession number:20122515129841
  Title:Navigation control for orchard mobile robot in curve path
  Authors:Chen, Jun1 ; Jiang, Haoran1 ; Liu, Pei1 ; Zhang, Qin2 
  Author affiliation:1  College of Mechanical and Electronic Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
                 2  Center for Precision and Automated Agricultural System, Washington State University, Prosser 99350, United States
  Corresponding author:Chen, J. (chenjun_jdxy@nwsuaf.edu.cn
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:179-182 187
  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 over goal of this study was to develop a laser scanner based automatic navigation system capable of guiding an autonomous mobile robot traveling in the orchard. An automatic navigation system, which consisted of a laser scanner, an inertial sensor, a DC PWM servo motor and a computer was developed and mounted on the mobile robot. A program based on quadratic curve was developed as the algorithm to planning navigation path. A controller based on fuzzy control was designed. The performance of the control system was tested in sinusoid condition at the travel speed of 0.54 m/s, the maximum error was 0.40 m and the mean error was 0.12 m in the test. The test result demonstrated that the system could navigate the mobile robot to traverse a curve alleyway of a simulative orchard condition with a relatively good accuracy.
  Number of references:14
  Main heading:Mobile robots
  Controlled terms:Fuzzy control  -  Laser applications  -  Navigation  -  Navigation systems  -  Orchards
  Uncontrolled terms:Automatic navigation systems  -  Autonomous Mobile Robot  -  Curve path  -  Inertial sensor  -  Laser scanner  -  Maximum error  -  Mean errors  -  Navigation controls  -  Navigation paths  -  Quadratic curves   -  Travel speed
  Classification code:434.4 Waterway Navigation  -  716.3 Radio Systems and Equipment  -  731 Automatic Control Principles and Applications  -  744.9 Laser Applications  -  821.3 Agricultural Methods  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.04.033
  Database:Compendex

41. Accession number:20122515129816
  Title:Anti-drift performance experiment of Π-type recycling tunnel sprayer
  Authors:Zhang, Jing1 ; Song, Jianli1 ; He, Xiongkui1 ; Zeng, Aijun1 ; Liu, Yajia1 
  Author affiliation:1  College of Science, China Agricultural University, Beijing 100193, China
  Corresponding author:Song, J. (songjianli170@163.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:37-39 125
  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:In order to meet the pest control requirement of hedge crop, tunnel sprayer was researched to entrap the droplets which were not deposited on the target and recycled. Tunnel sprayer was compared with conventional air-assist orchard sprayer on anti-drift performance. The result showed that, the drift in air of tunnel sprayer was reduced by 97.9% compared with conventional orchard sprayer in down wind direction; the ground drift of tunnel sprayer was reduced by 99.3% in drift distance.
  Number of references:9
  Main heading:Recycling
  Controlled terms:Experiments  -  Orchards  -  Pest control
  Uncontrolled terms:Air-assist  -  Anti-drift  -  Control requirements  -  Drift  -  Drift distance  -  Performance experiment  -  Recycling tunnel sprayers  -  Wind directions
  Classification code:452.3 Industrial Wastes  -  803 Chemical Agents and Basic Industrial Chemicals  -  821.3 Agricultural Methods  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.04.008
  Database:Compendex

42. Accession number:20122515129844
  Title:Hardware design of detection system for stored-grain live insects based on computer vision
  Authors:Zhang, Hongtao1 ; Hu, Yuxia2 ; Mao, Hanping3 ; Han, Lühua3 ; Wu, Huiling3 
  Author affiliation:1  Institute of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
                 2  School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
                 3  Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Ministry of Education and Jiangsu Province, 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:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:193-196 167
  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 detection system for stored-grain live insects was developed based on visible-near infrared computer vision. The system included an automatic sieving subsystem of insects, an automatic transporting subsystem of insects, an illumination box and an image acquisition subsystem. The insects could be rapidly and efficiently separated from the grain sample, and removed dust automatically in the automatic sieving subsystem of insects. The automatic transporting subsystem of insects could accurately receive the sieve material, and transport the collection box to the image vision acquisition part for image acquisition. The even illumination chamber could provide even visible and near-infrared diffuse light for the sieve material in the collection box. The image acquisition subsystem could simultaneously acquire the visual image and the near infrared image of the sieve material. The sieving accuracy of the detection system was 96.06% for the nine species of the most destructive live insects. The experiment showed that the system was practical and feasible.
  Number of references:9
  Main heading:Computer vision
  Controlled terms:Computer hardware  -  Error detection  -  Hardware  -  Image acquisition  -  Infrared devices  -  Infrared imaging  -  Sieves
  Uncontrolled terms:Acquisition subsystems  -  Detection system  -  Diffuse light  -  Hardware design  -  Near Infrared  -  Removed dust  -  Stored-grain live insects  -  Visible and near infrared  -  Vision acquisition  -  Visual image
  Classification code:741.3 Optical Devices and Systems  -  741.2 Vision  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  722 Computer Systems and Equipment  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  605 Small Tools and Hardware
  DOI:10.6041/j.issn.1000-1298.2012.04.036
  Database:Compendex

43. Accession number:20122515129820
  Title:High-speed capture analysis of fertilization process for deep-fertilization liquid fertilizer device
  Authors:Wang, Jinfeng1 ; Wang, Jinwu1 ; He, Jiannan1 
  Author affiliation:1  College of Engineering, Northeast Agricultural University, Harbin 150030, China
  Corresponding author:Wang, J. (jinfeng_w@126.com
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:4
  Issue date:April 2012
  Publication year:2012
  Pages:55-59
  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 rotating rate of planetary frame of 110 r/min, the pressure of liquid pump of 0.3 MPa, the diameter of valve core hole of distributor of 3 mm, the diameter of spraying-fertilizer needle nozzle of 2 mm, the working processes of pricking hole and spraying fertilizer of pricking hole mechanism were shot by high-speed camera. The movement laws of pricking hole and spraying fertilizer were analyzed by high-speed camera techniques and image processing technology, which showed that the fertilization time was 0.1 s from spraying-fertilizer needle went into the soil and began spraying fertilizer to it went out of the soil and stopped spraying fertilizer, the fertilization loss rate was 0.48%, the change of real trajectory width was 256 mm, and the change of height was 502 mm. The results showed that the processes of pricking hole and spraying fertilizer of pricking hole mechanism had good synchronicities, and fertilization loss rate was far less than the operation requirement 3.5%.
  Number of references:15
  Main heading:Fertilizers
  Controlled terms:High speed cameras  -  Image processing  -  Needles  -  Spray nozzles
  Uncontrolled terms:Core hole  -  High-speed  -  Image processing technology  -  Liquid fertilizers  -  Liquid pump  -  Loss rates  -  Pricking hole  -  Real trajectories  -  Rotating rates  -  Simulation   -  Working process
  Classification code:631.1 Fluid Flow, General  -  741 Light, Optics and Optical Devices  -  742.2 Photographic Equipment  -  804 Chemical Products Generally  -  819.6 Textile Mills, Machinery and Equipment
  DOI:10.6041/j.issn.1000-1298.2012.04.012
  Database:Compendex
 
44. Accession number:20122515129818
  Title:Spraying parameters optimization of swing, automatic variables and greenhouse mist sprayer with response surface method
  Authors:Yuan, Xue1 ; Qi, Lijun1 ; Wang, Hu1 ; Huang, Shikai1 ; Ji, Ronghua2 ; Zhang, Jianhua1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Qi, L. (qilijun@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:4
  Issue date:April 2012
  Publication year:2012
  Pages:45-50 54
  Language:Chinese
  ISSN:10001298
  CODEN:NUYCA3
  Document type:Journal article (JA)
  Publisher:Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:A swing, automatic variables and greenhouse mist sprayer equipped with the sprinkler swing function and automatic dosing and discharge liquid system was presented. In order to verify and optimize pesticide application efficiency of mist sprayer, parameters such as spraying flow rate, spraying distance, sprinkler swing speed and sprayer forward velocity were selected as independent variables, which would influence distribution of droplets deposition. Subsequently, the Box-Behnken experimental design with four factors and three levels was performed, and the mathematical model was established by using Design-Expert software, then the effects of various parameters and their interactions were analyzed as well. The results showed that effects order of four parameters on distribution of droplets deposition were as follows: sprinkler swing speed, sprayer forward velocity, spraying distance, and spraying flow rate. The optimal spraying parameters were spraying flow rate of 185 mL/min, spraying distance of 2 m, sprayer forward velocity of 8 cm/s and sprinkler swing speed of 5(°)/s, then the coefficient of variation of droplets distribution of 1.632% was obtained.
  Number of references:10
  Main heading:Optimization
  Controlled terms:Drops  -  Flow rate  -  Greenhouses  -  Mathematical models  -  Surface properties
  Uncontrolled terms:Box-Behnken experimental design  -  Coefficient of variation  -  Design-expert  -  Forward velocity  -  Independent variables  -  Liquid system  -  Response surface method  -  Spraying distance  -  Spraying parameters
  Classification code:402.1 Industrial and Agricultural Buildings  -  443.1 Atmospheric Properties  -  631 Fluid Flow  -  921 Mathematics  -  921.5 Optimization Techniques  -  951 Materials Science
  DOI:10.6041/j.issn.1000-1298.2012.04.010
  Database:Compendex