Optimal Fault Diagnosis for Systems with Time-Delay Based on Lyapunov Functional
Facing to the time-delay systems with actuator fault and sensor fault whose dynamic characteristics is known but the initial state and the initial time are unknown, the method of fault diagnosis is studied, and a kind of design scheme of fault diagnoser is proposed based on duality principle and Lyapunov functional. Firstly, the design problem of observer for fault diagnosis is translated into the state feedback problem of optimal control by duality principle. Then the optimal fault diagnoser is designed to diagnose the fault and to cater the quadratic performance index. Finally, the stability of the optimal fault diagnoser is proven by Lyapunov functional. This design method is simple and easily understood. Simulation results show the feasibility and the validity of the proposed scheme.
Juan Li Gongyou Tang Ziqiang Li
College of Information Science and Engineering Ocean University of China Qingdao, 266100 P.R.China;C College of Information Science and Engineering Ocean University of China Qingdao, 266100 P.R.China
国际会议
南宁
英文
2007-07-20（万方平台首次上网日期，不代表论文的发表时间）