Observer-Based Fault Estimation for Networked Control Systems with Transfer Delays

Abstract

In this paper, diagnosis of actuator/component faults for networked control systems (NCSs) with transfer delays is investigated. First, the linear NCSs with transfer delays are modelled by T-S discrete-time systems with input delays. Next, under certain conditions, a stable adaptive observer for fault diagnosis is designed. An extension to a class of nonlinear systems is then made. Finally, a motor example is given to illustrate the e±ciency of the proposed method.