Fuzzy Observer-based Robust Guaranteed Cost Fault-tolerant Design for Uncertain Nonlinear NCS

ABSTRACT

Through the comparison and analysis of some recent patents on the fault-tolerant designed method, this paper addresses the problem of robust guaranteed cost fault-tolerant for nonlinear networked control systems (NNCS) with network- induced delay and packed dropout. Firstly, we adopt observer and state-feedback control strategy, wherein states are immeasurable. Then, by constructing appropriate Lyapunov-Krasovskii functional, based on T-S fuzzy model, a delaydependent sufficient condition is deduced for robust guaranteed cost fault-tolerant control. Further, observer-based gain and state-feedback controller gain can be obtained and optimized. Finally, an example is used to illustrate the effectiveness and feasibility of the proposed approach.

Keywords:

Fault-tolerant control, Guaranteed cost, Nonlinear Networked Control System, state observer, T-S Fuzzy Model.