Dynamic modeling of leveling system of paddy field laser leveler

Modern paddy rice planting requires the field with high smoothness since it is conducive to reducing water consumption and improving the crop yields. In order to improve the control precision, stability and responsiveness of a laser leveler in varying paddy field environment, a dynamic model of the...

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Published inNong ye gong cheng xue bao Vol. 31; no. 7; pp. 18 - 23
Main Authors Chen, Jiaqi, Zhao, Zuoxi, Shi, Lei, Ke, Xinrong, Wu, Zhiwei, Liu, Xiong
Format Journal Article
LanguageChinese
Published 01.04.2015
Subjects
Agricultural engineering
Design engineering
Differential equations
Dynamical systems
Dynamics
Lasers
Leveling
Mathematical models
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Summary:Modern paddy rice planting requires the field with high smoothness since it is conducive to reducing water consumption and improving the crop yields. In order to improve the control precision, stability and responsiveness of a laser leveler in varying paddy field environment, a dynamic model of the leveling system is proposed in this paper. A series of differential algebraic equations (DAE) about the two subsystems are then proposed and analyzed based on the diagrams. A typical paddy field leveler is used to demonstrate how to numerically solve these DAEs, and various parameters of the subsystems like resonant frequency, viscosity coefficient of friction, rotation inertia and damping ratio are experimentally determined. The model represented by DAEs, the way to derive it and the way to numerically solve it, can be used for both hydro-mechanical design and control algorithm design for the leveler, and the modeling principles may be applied to the design of similar electro-hydro-mechanical agricultural operatio
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ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2015.07.003