移动工作台位置控制系统变论域模糊PID研究  

Research on variable universe fuzzy PID for position control system of moving workbench

作　　者：朱桂英 师国辉 侯志辉 王毅颖 ZHU Guiying;SHI Guohui;HOU Zhihui;WANG Yiying(School of Mechanical and Equipment Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学机械与装备工程学院,邯郸056038

出　　处：《现代制造工程》2022年第1期119-124,共6页Modern Manufacturing Engineering

基　　金：河北省科技计划项目(17211817D)。

摘　　要：单机多工位锻压机的移动工作台位置控制系统是多变量的非线性耦合系统,常规PID控制和模糊PID控制难以完全适应复杂系统变化,满足系统控制要求。为了解决这一问题,在模糊PID控制的基础上加入变论域模块,改变模块中的论域伸缩因子,使模糊控制的论域随系统条件变化而调整,最终整定出满足系统控制要求的PID参数。对移动工作台位置控制环节建立了数学模型,并在Matlab/Simulink中进行了控制系统建模及仿真分析。结果表明:相比常规PID控制和模糊PID控制,使用变论域模糊PID控制的系统具有良好的动静态性能,在响应速度、过渡过程时间及稳态精度等方面具有更好的优越性,适合在复杂的非线性耦合控制系统中使用。The position control system of moving workbench for single machine multi position forging press is a multivariable nonlinear coupling system.The conventional PID control and fuzzy PID control can not fully adapt to the complex system changes,and can not fully guarantee the forging efficiency and workpiece yield.To fix the above problem,on the basis of fuzzy PID control,adding variable universe module and changing universe expansion factor in the module can make the universe of fuzzy control adjust with the system changes,and finally set the PID parameters that meet the system control requirements.The mathematical model of the position control part of the moving workbench was established,and the control system modeling and simulation analysis were carried out in Matlab/Simulink software.The results show that compared with the conventional PID and fuzzy PID control methods,the variable universe fuzzy PID control method has better advantages in response speed,steady-state regulation time and steady-state accuracy,and is suitable for application in the system with higher control requirements.

关 键 词：移动工作台 位置控制系统 变论域模糊PID 系统仿真 

分 类 号：TH16[机械工程—机械制造及自动化] TP273.4[自动化与计算机技术—检测技术与自动化装置]