Robust UIO design for an actuator fault identification

Abstract

In this paper an actuator robust fault identification scheme is developed, which is based on an observer within H∞ framework for a class of non-linear systems. The proposed approach is designed in such a way that a prescribed disturbance attenuation level is achieved with respect to the actuator fault estimation error while guaranteeing the convergence of the observer. The effectiveness of the proposed approach is verified with the laboratory multi-tank system.