基于LabVIEW的模糊PID细杆摇摆系统  

Fuzzy PID Control in the Thin Rod Swing System Based on LabVIEW

作　　者：梁成 刘放[1] 许鸿谦 LIANG Cheng;LIU Fang;XU Hong-qian(School of Mechanical Engineering,Southwest Jiaotong University,Sichuan Chengdu610031,China)

机构地区：[1]西南交通大学机械工程学院

出　　处：《机械设计与制造》2020年第2期109-112,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目（51175442)

摘　　要：细杆摇摆系统是一种重要的模拟海洋环境的仿真试验平台,模拟海洋环境对某实验反应的影响。该系统具有非线性、自然不稳定性和时变性的特点。该系统采用LabVIEW开发的上位机系统,和以CCS6.0为开发平台的TMS320F28335 DSP数字信号处理器的下位机系统。摇摆系统需要输出摆动周期和摆动角度严格对应的正弦曲线运动。针对细杆摇摆系统非线性、自然不稳定和时变性的特点,设计了一种基于模糊PID的闭环控制算法。用matlab进行控制算法的仿真。同时对项目要求的十二种工况进行实验,实验结果表明,该控制算法具有响应速度快、系统跟随性好、超调量小等优点。同时暴露出系统具有齿轮齿条传动反向传动时的间隙问题。The thin rod swing system simulating the marine environmentis a very important simulation test platform simulating sinusoidal environment.The frequency and the amplitude of the platform is changeable.Besides,It’s a non-linear、naturally unstable and time-variant system.And,the host computer of the system is built by LabVIEW;The hypogenous machine is TMS320F28335 DSP whose development platform is CCS6.0.Cycle and swinging angle of the sine output are corresponding strictly.What’s more,aclosed-loop control algorithm using fuzzy-PID is designed for this non-linear、naturally unstable and time-variant system.Simulation system built by matlab has check the algorithm.Finally,Do experiment under 12 kinds of conditions that project requires,The experimental results show that this control algorithm has a fast dynamic response、good system compliance and slight overshoot.While,the gear rack drive has reverse interval.

关 键 词：LABVIEW 细杆摇摆系统 模糊PID MATLAB 

分 类 号：TH16[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]