基于遗传算法的山区微型播种施肥机减振优化设计

针对山区以汽油发动机为动力的微型播种施肥机振动大难以操作的问题,提出了一种降低振动的方法。文中首先建立了五自由度播种施肥机数学模型,运用Matlab软件构建了仿真模型并对其进行了振动分析;其次建立了以垂直振动加速度和俯仰角加速度为指标的多目标优化数学模型,运用遗传算法进行了优化设计,优化后播种机机架处垂直振动加速度均方根值减少32.9%,俯仰角加速度均方根值减少37.6%;在此基础上,重新设计了播种施肥机的履带、减振器和橡胶垫等结构部件;最后对改进后的播种施肥机进行田间试验,对比改进前的振动测试数值可得：改进后的微型播种施肥机垂直振动均方根值在发动机安装处、机架处和把手处均显著降低,其中机架处...

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Bibliographic Details
Published in农业工程学报 Vol. 31; no. 3; pp. 17 - 22
Main Author 陈黎卿 李艳 曹成茂 郑 泉
Format Journal Article
LanguageChinese
Published 安徽农业大学工学院,合肥,230036 2015
Subjects
仿真
农业机械
微型播种施肥机
振动
遗传算法
agricultural machinery
遗传算法
micro planter and fertilizer machinery
振动
simulation
仿真
genetic algorithms
微型播种施肥机
vibrations
农业机械
Online AccessGet full text
ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2015.03.003

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Summary:针对山区以汽油发动机为动力的微型播种施肥机振动大难以操作的问题,提出了一种降低振动的方法。文中首先建立了五自由度播种施肥机数学模型,运用Matlab软件构建了仿真模型并对其进行了振动分析;其次建立了以垂直振动加速度和俯仰角加速度为指标的多目标优化数学模型,运用遗传算法进行了优化设计,优化后播种机机架处垂直振动加速度均方根值减少32.9%,俯仰角加速度均方根值减少37.6%;在此基础上,重新设计了播种施肥机的履带、减振器和橡胶垫等结构部件;最后对改进后的播种施肥机进行田间试验,对比改进前的振动测试数值可得：改进后的微型播种施肥机垂直振动均方根值在发动机安装处、机架处和把手处均显著降低,其中机架处降低28.31%,验证了优化结果的正确性。该方法也为同类产品的减振提供了方法。
Bibliography:11-2047/S
agricultural machinery; genetic algorithms; vibrations; micro planter and fertilizer machinery; simulation
In order to solve the problem of difficult manipulation of micro planting and fertilizing machinery powered by gasoline engine in the mountainous area, a method of vibration reduction was proposed in this paper. Primarily, a certain kind of micro planting and fertilizing machine was taken as a research subject to establish the mathematic model of the planting and fertilizing machine with five degrees of freedom, and the data of filed image spectrogram was collected through the experiment. Secondly, the simulation model of the system was built with Matlab/Simulink software; thereafter, the multi-objective optimization mathematic model was established taking four parameters i.e. the rigidity and damping between engine and rack, the damper rigidity and damping between rack and travel wheel as design variables and taking vertical vibration acceleration and elevation angular acceleration on the rack a
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2015.03.003