液压伺服系统的变论域自适应模糊控制  

Variable Domain Adaptive Fuzzy Control of Hydraulic Servo System

作　　者：陈思汉 殷玉枫[1] 张锦 李正楠 王嘉誉 柴晓峰 CHEN Sihan;YIN Yufeng;ZHANG Jin;LI Zhengnan;WANG Jiayu;CHAI Xiaofeng(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;School of Intelligent Manufacturing,Shanxi Vocational University of Engineering Science and Technology,Jinzhong Shanxi 030031,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]山西工程科技职业大学智能制造学院,山西晋中030031

出　　处：《机床与液压》2023年第10期78-83,共6页Machine Tool & Hydraulics

基　　金：山西省交通运输厅科技计划项目(2019-1-9)。

摘　　要：针对液压伺服系统的参数不确定性和高度非线性等问题,提出一种变论域自适应模糊控制方法。设计一种自适应律,利用不同时刻反馈回来的误差信息在线调整控制系统参数,实现实时自适应调整,避免了传统模糊控制过度依赖模糊控制规则的问题;基于自适应模糊控制系统,将系统误差及误差变化率作为输入,伸缩因子参数作为输出,提出伸缩因子自调整函数,达到对液压伺服系统高精确高响应的控制。MATLAB/Simulink仿真结果表明:变论域自适应模糊控制方法有效提高了轨迹的跟踪速度和跟踪精度。In order to solve the problems of parameter uncertainty and high nonlinearity of hydraulic servo system,a variable domain adaptive fuzzy control method was proposed.An adaptive law was designed to adjust the parameters of the control system online by using the error information fed back at different times to realize real-time adaptive adjustment,thus the problem of traditional fuzzy control relying too much on fuzzy control rules was avoided.Based on the adaptive fuzzy control system,taking the system error and error change rate as the input and the expansion factor parameters as the output,the self-adjusting function of the expansion factor was proposed to achieve the control of high precision and high response of the hydraulic servo system.The MATLAB/Simulink simulation results show that the variable domain adaptive fuzzy control method effectively improves the tracking speed and accuracy.

关 键 词：变论域自适应模糊 伸缩因子 模糊控制 自适应律 

分 类 号：TH137[机械工程—机械制造及自动化]