农用机械同步控制系统联合仿真分析  

Co-simulation Analysis of Synchronization Control System on Agricultural Machinery

作　　者：陈靖 罗瑜[1] 罗艳蕾[1] CHEN Jing;LUO Yu;LUO Yan-lei(College of Mechanical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学机械工程学院,贵阳550025

出　　处：《科学技术与工程》2020年第23期9362-9366,共5页Science Technology and Engineering

基　　金：贵州省创新群体重大研究项目(黔教合KY字[2017]029);贵州省科技支撑计划(黔科合支撑[2017]2027);贵州大学培育项目黔科合平台人才项目([2018]5781-23)。

摘　　要：在复杂工况和直线要求较高的情况下,为满足农机高精准性、高可靠性的要求,实现农用机械的直线同步行驶,提出一种同步阀+电磁比例阀的液压驱动底盘。运用等同控制,控制器设计基于模糊PID自适应控制理论,采用AMESim和MATLAB联合仿真的方法,对液压马达同步直线行走进行仿真研究,得出符合农用机械行走要求的底盘行走机构。研究结果表明:该系统具有很好的动态响应特性,液压马达同步误差最大值为4.3 r/min,同步精度最大值为1.8%,可以满足农用机械直线行走的要求。研究方法可为需要高精准性、高可靠性的农用机械底盘设计提供理论支持,并为液压驱动的同步控制系统提供参考。Under complex working conditions and high requirements of straight walking, the accuracy and stability are required in agricultural machinery. Thus, a hydraulic chassis with synchronous valve and electromagnetic proportional valve was proposed to realize straight walking. The control system adopted a method of equal control, and the controller was based on fuzzy PID adaptive control theory. The co-simulation of AMESim and MATLAB was used to study the hydraulic motor synchronous straight walking. The results show that the system has good dynamic response characteristics. The maximum synchronization error of hydraulic motor is 4.3 r/min, and the maximum of synchronization accuracy is 1.8%, which can meet the requirements of straight line walking of agricultural machinery. The research method can provide theoretical support for the chassis design of agricultural machinery of high precision and reliability. It also provides reference for synchronous control system driven by hydraulic system.

关 键 词：农用机械 模糊PID自适应 同步阀 联合仿真 

分 类 号：TH137[机械工程—机械制造及自动化]