Fault Detection for a Class of Nonlinear Networked Control Systems

To a class of networked control systems with nonlinear remote controlled object and output induced-delay,the fault detection is carried out when actuator faults are supposed.Using T-S fuzzy model,the object is linearized and the fuzzy observer is constructed.And the stability condition of the observer system is given as well.Furthermore,it is not straightforward to find the matrix to satisfy the stability condition of this observer,so the observer is redesigned using the concept of the dominant subsystem in fuzzy models.And on the basis of Lyapunov stability theory,the sufficient condition of globally asymptotic stability of the whole system is deduced.Finally,the result of simulation shows the effectiveness of the proposed method.