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Study on Centroid Measurement Technology and System of Small Agricultural Machinery

Author: JiangJianFu
Tutor: ZhangXian；JiangJianDong
School: Zhejiang University of Technology
Course: Mechanical and Electronic Engineering
Keywords: Small Agricultural Machinery Centroid measurement Error Analysis Co-simulation
CLC: TP274
Type: Master's thesis
Year: 2009
Downloads: 61
Quote: 1
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Abstract


Southern hills and mountains rich in agricultural resources, but the characteristics of the hilly areas hampered the development of agricultural mechanization. Small agricultural machinery with small size, light weight, high performance, ideal for agricultural machinery is suitable for mountainous hills jobs. As the the mountain foothills main operating machinery, small agricultural machinery centroid position of a direct impact on the adaptability of the whole of the operating environment. Centroid position of small agricultural machinery is operating one of the important parameters of the machine, its dynamic performance of operating machines, operating and driving stability, rollover safety, acceleration of the reaction, and hook traction efficiency all have an important impact . In operating machine design, test, setting process would require accurate and rapid measurement of the the car physique heart position be. Characteristics of small agricultural machinery, single fulcrum driven tiltable platform method, integrated use of virtual test technology, co-simulation technology, error analysis theory centroid measurement system for working machine and its error analysis. This paper's main work and achievements are as follows: First, small agricultural working machine quality heart of the measurement method and principle, centroid formula is deduced, and multi-body dynamics simulation software ADAMS establish a simplified virtual centroid measurement platform, the simulation test verify the correctness of the the centroid measurement methods and virtual centroid measurement platform. Then, based on the theory of error analysis centroid measurement system random error model. Through error analysis, the measuring platform structure parameters, load cell measurement error is the error of the measurement results as well as the displacement of mass center putter landing and taking off during the test height measurement error; ADAMS and MATLAB interface so small centroid measurement platform of agricultural machinery control system model and error model with mechanical system models combine the establishment of a joint simulation control model; through joint simulation tests to verify the correctness of the theoretical analysis and co-simulation model. Finally, build the actual the centroid measurement systems, including system hardware measurement platform, weighing sensors, transmitters, data acquisition card, system software using VC programming to achieve data acquisition, processing, calculation and display. Test to verify the correctness of the theoretical analysis and co-simulation analysis.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system
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