基于LS-SVM的不确定非线性系统滑模控制  

Sliding Mode Control of Uncertain Nonlinear Systems Based on LSSVM

作　　者：王鲜芳[1] 郑彦斌[1] 冯乃勤[1] 

机构地区：[1]河南师范大学计算机与信息技术学院,河南新乡453007

出　　处：《控制工程》2011年第4期580-583,共4页Control Engineering of China

基　　金：河南省科技攻关基金资助项目(082102210109)

摘　　要：针对滑模控制中不确定上界值的问题,提出了一种基于LSSVM自适应上界学习的滑模控制方法。首先将系统分为确定部分和不确定部分,对确定部分采用状态反馈法进行控制,对不确定系统部分采用最小二乘支持向量机(LSSVM)来完成。该控制器不仅可以保证非线性不确定系统渐近稳定,降低一般滑模控制理论分析的条件,还有效地抑制了抖振。仿真实例表明该设计方法正确有效。To the problem that the uncertain upper bound value must be known in the sliding mode control,the upper bound adaptive dynamic SM control method based on LSSVM is proposed.The system is divided into two parts,i.e.,certain part and uncertain part.To the certain part,the state feedback control is used,and the uncertain part the LSSVM is applied.The controller can ensure the system asymptotic stability.And it reduces the theory analysis condition of the sliding mode control.It can also suppress the chattering effectively.The simulation examples show that the proposed sliding mode controller is correct and effective.

关 键 词：动态滑模 LSSVM 非线性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]