A New Approach to Fault Detection Observer Design of Nonlinear Time-Delay Systems via Fuzzy Lyapunov Functions
This paper addresses the design problem of fault detection (FD) observer for nonlinear systems via Takagi-Sugeno(TS) fuzzy model approach. By employing a new fuzzy Lyapunov function and several slack variables, the stability andH. index fault sensitivity conditions for TS fuzzy models with time-delay are established. The analyzing results provide an efficient technique to reduce the conservatism in stability analysis and H_ index estimation. Some new sufficient conditions for the existence of fuzzy FD observer gains of the time-delay system are obtained in terms of linear matrix inequalities (LMIs). Finally, numerical example is given to show the effectiveness of the proposed approach.
Nonlinear systems Fault Detection Observer Design Fuzzy Lyapunov Functions Takagi-Sugeno(TS) Fuzzy Model H_ Index Time-Delay
LIU Guojun CAO Yongyan CHEN Jianliang
Dept. of Automation,Wuhan University of Science and Technology,Wuhan 430081, China School of Physics Dept. of Automation,Wuhan University of Science and Technology,Wuhan 430081, China
国际会议
The 31st Chinese Control Conference(第三十一届中国控制会议)
合肥
英文
951-956
2012-07-01（万方平台首次上网日期，不代表论文的发表时间）