Backstepping Controller Design for Electro-hydraulic Servo System with Sliding Observer

作     者：CHEN Yan School of Computer and Information Engineering,Beijing Technology and Business University,Beijing,100048,P.R.China 

会议名称：《第二十九届中国控制会议》

会议日期：2010年

学科分类：0711[理学-系统科学] 07[理学] 08[工学] 081101[工学-控制理论与控制工程] 0811[工学-控制科学与工程] 071102[理学-系统分析与集成] 081103[工学-系统工程] 

关 键 词：Electro-hydraulic servo system Backstepping control sliding observer Lyapunov method 

摘      要：Because an electro-hydraulic servo system is nonlinear,its parameters are difficult to measure and control accuracy is needed highly,a backstepping control method with sliding state observer is *** this strategy,state observer is designed by sliding method,velocity sensor and press sensor aren’t needed,and position sensor is needed *** reducing chattering with sliding method,the saturation function is used to replace signal *** order to deal with system’s uncertainty,controller is designed with backstepping *** uniformly ultimately bounded（UUB）stabilities of all signals are proved by Lyapunov stability *** method can guarantee the stabilization of the closed-loop ***,simulation results are presented to illustrate the effective and the applicability of the suggested method.