Fault diagnosis based on high-gain observer with an update law for a class of nonlinear systems

作     者：Yanjun SHEN (College of Science,China Three Gorges University,Yichang Hubei 443002,China) 

作者机构：College of Science China Three Gorges University Yichang Hubei China 

出 版 物：《控制理论与应用（英文版）》 (J. Control Theory Appl.)

年 卷 期：2010年第8卷第4期

页      面：447-452页

核心收录：

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] 

基　　金：supported by the National Science Foundation of China(No.61074091) the National Science Foundation of Hubei Province(No.2008CDZ046,2008CDZ047) the Scientific Innovation Team Project of Hubei Provincial Department of Education(No.T200809) the Science Foundation of Education Commission of Hubei Province(No.D20091305) 

主　　题：Fault diagnosis Adaptive estimation High-gain observer Nonlinear systems 

摘      要：In this paper,by using the well-known high-gain observer design,an update law for the gain and an adaptive estimation of parameters,a new method of fault diagnosis for a class of nonlinear systems is *** resort to any transformation for the parameters,the estimation errors of the states and the parameters are guaranteed to be globally exponentially convergent by a persistent excitation *** to the existing results,it can be applied to nonlinear systems with nonlinear terms admitting an incremental rate depending on the measured output.A case study further verifies the validity of the proposed research.