A Robust Fault Detection Approach for Nonlinear Systems  

作　　者：Min-Ze Chen Qi Zhao Dong-Hua Zhou 

机构地区：[1]Department of Automation, Tsinghua University, Beijing 100084, PRC

出　　处：《International Journal of Automation and computing》2006年第1期23-28,共6页国际自动化与计算杂志（英文版）

基　　金：This work was mainly supported by NSFC (No.60234010) and also partially supported by the Field Bus Technology & Automation Key Lab of Beijing in North China, and the national 973 program of China (No.2002CB312200).

摘　　要：In this paper, we study the robust fault detection problem of nonlinear systems. Based on the Lyapunov method, a robust fault detection approach for a general class of nonlinear systems is proposed. A nonlinear observer is first provided, and a sufficient condition is given to make the observer locally stable. Then, a practical algorithm is presented to facilitate the realization of the proposed observer for robust fault detection. Finally, a numerical example is provided to show the effectiveness of the proposed approach.In this paper, we study the robust fault detection problem of nonlinear systems. Based on the Lyapunov method, a robust fault detection approach for a general class of nonlinear systems is proposed. A nonlinear observer is first provided, and a sufficient condition is given to make the observer locally stable. Then, a practical algorithm is presented to facilitate the realization of the proposed observer for robust fault detection. Finally, a numerical example is provided to show the effectiveness of the proposed approach.

关 键 词：ROBUST nonlinear systems fault detection OBSERVER stability. 

分 类 号：TP271.62[自动化与计算机技术—检测技术与自动化装置] TP277[自动化与计算机技术—控制科学与工程]