Sensor Fault Estimation and Compensation for Switched Systems with State Delay

Abstract

In this chapter, the problems of sensor fault estimation and compensation approaches for time-delay switched systems are investigated based on switched descriptor observer approach. First, a novel time-delay switched descriptor state observer is proposed to estimate both the state and sensor fault. The proposed observer technique is also extended to systems with nonlinearities. Then, based on the estimation of the sensor fault, an efficient fault-tolerant operation can be realized via sensor fault compensation. Finally, an example is given to show the efficiency of the developed techniques.