摘要
针对一类不确定非线性系统,提出了一种模糊积分滑模控制策略。在滑模控制中引入积分控制项,消除了常规滑模变结构控制需被跟踪信号导数已知的限制,用模糊控制削弱积分滑模非线性项导致的抖振,而不降低滑模控制系统对参数变化和外干扰不确定的强鲁棒性。用该控制策略对某电液伺服系统进行跟踪控制的仿真结果表明:该控制策略具较强的鲁棒性和良好的跟踪性能。
A design method of fuzzy integral sliding mode control was put forward for a class of nonlinear system with uncertainty in this paper.Integral control was introduced to avoid assuming that the derivative of desired signal must be known in conventional sliding mode variable structure control.Fuzzy control was adopted based on integral sliding mode control,which would effectively alleviate the chattering brought by nonlinear control without sacrificing the strong robustness to parameter variations and externa...
出处
《上海航天》
北大核心
2008年第4期6-10,共5页
Aerospace Shanghai
关键词
非线性系统
电液伺服系统
积分滑模控制
模糊控制
抖振
Nonlinear system
Electro-hydraulic servo system
Integral sliding mode control
Fuzzy control
Chattering
