电液比例伺服系统模糊PID复合控制应用研究  

Fuzzy-PID Compound Control of Electro-hydraulic Proportional Servo System

作　　者：毛尾 纪朱珂 韦海利 彭熙伟[1] MAO Wei;JI Zhu-ke;WEI Hai-li;PENG Xi-wei(School of Automation,Beijing Institute of Technology,Beijing 100081;The First Inspection Bureau of the State Taxation Bureau of Beijing,Beijing 100013)

机构地区：[1]北京理工大学自动化学院,北京100081 [2]北京市国家税务局第一稽查局,北京100013

出　　处：《液压与气动》2019年第1期95-99,共5页Chinese Hydraulics & Pneumatics

摘　　要：针对电液比例伺服系统变流量死区和变流量增益等非线性因素,对PID控制和模糊控制的控制效果进行了研究,通过设定合理的控制误差阈值实现PID控制和模糊控制的切换,提出了模糊PID复合控制。采用实验方法比较了PID控制、模糊控制和模糊PID复合控制下电液比例伺服系统空载和带载的控制效果,实验结果表明模糊PID复合控制充分发挥了PID控制和模糊控制的优越性能,既有较快的响应速度,又有较高的控制精度。Aiming at nonlinear factors such as variable flow dead zone and variable flow gain of electro-hydraulic proportional servo system,we study control effects of PID control and fuzzy control.By employing a reasonable error threshold,we realize a switch of PID control and fuzzy control,accordingly,a strategy of fuzzy-PID compound control is proposed.The control effects of PID control,fuzzy control and fuzzy-PID compound control are compared under the circumstance of loading and non-loading.The results show that the fuzzy-PID compound control can give full play to superiority of PID control and fuzzy control with faster response and higher control accuracy.

关 键 词：电液比例伺服系统 PID控制 模糊控制 模糊PID复合控制 

分 类 号：TH137[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]