Operator-based fault tolerant control for uncertain nonlinear systems

Abstract

In this paper, operator based fault tolerant control for uncertain nonlinear system with actuator fault is considered by using operator based robust right coprime factorization approach. In detail, on the basis of the operator based control design structure, fault detection system design and fault tolerant control system design are considered for nonlinear system without and with uncertainty, respectively. In both of the proposed control system design, the fault signal can be detected and some sufficient conditions are given, which ensure that the designed system is stable and the output tracking performance can be realized. Finally, the theoretical analysis is applied onto an aluminium plate temperature control process and the effectiveness of the theoretical analysis is demonstrated by the simulation results.