Abstract:

With the presence of time-delay and loss of packet in the network, the problem of robust H_∞ fault-tolerant control system design for a class of nonlinear networked control system (NCS) is investigated. Based on a nolinear NCS model approximated by uncertain T-S fuzzy models, a more practical and general case of actuator failures is considered. By introducing an integral inequality, the robust stability conditions are obtained. The design method of delay-dependent robust H_∞ faulttolerant controller is also proposed by employing a cone complementarity linearization algorithm. Simulation results demonstrate that for any allowable uncertainty and actuator failure the proposed controller can makes the system robustly asymptotically stable with a H_∞ norm bound.