Title :
Fault-tolerant Control of Uncertain Time-delay Discrete-time Systems Using T-S Model
Author :
Zhang, Le ; Jing, Yuan-Wei ; Chen, Rong-Zhen ; Liu, Honghai ; Dimirovski, Georgi M.
Author_Institution :
Northeastern Univ. of Shenyang, Shenyang
Abstract :
The investigated control problem of nonlinear time-delay discrete-time systems is addressed using Takagi-Sugeno model. Parametric uncertainty and time-delay terms are employed in building the Takagi-Sugeno model for the controlled plant for the purpose of close representation of the original plant system. The integrity and robustness are guaranteed for the closed-loop fuzzy system in sense of Lyapunov stability method via fuzzy state observers. Sufficient conditions for the fuzzy system to possess integrity against actuator failures and sensor failures in the closed-loop are derived in terms of linear matrix inequalities under assumption of known bounds on uncertainties. The results for trailer-truck example are used to illustrate the effectiveness of the method.
Keywords :
Lyapunov methods; closed loop systems; delay systems; discrete time systems; fault tolerance; fuzzy control; linear matrix inequalities; nonlinear control systems; robust control; uncertain systems; Lyapunov stability; Takagi-Sugeno model; closed-loop system; discrete-time system; fault-tolerant control; fuzzy state observer; fuzzy system; linear matrix inequalities; nonlinear system; parametric uncertainty; robustness; uncertain time-delay system; Fault tolerant systems; Fuzzy systems; Hydraulic actuators; Lyapunov method; Nonlinear control systems; Robust stability; Sensor systems; Sufficient conditions; Takagi-Sugeno model; Uncertainty;
Conference_Titel :
Fuzzy Systems Conference, 2007. FUZZ-IEEE 2007. IEEE International
Conference_Location :
London
Print_ISBN :
1-4244-1209-9
Electronic_ISBN :
1098-7584
DOI :
10.1109/FUZZY.2007.4295561
