Adaptive fault diagnosis for continuous time-delay repetitive system subject to sensor fault

Abstract

This note proposes an adaptive fault diagnosis scheme for the continuous time-delay repetitive system subject to the sensor fault. The theory of iterative learning control(ILC) is employed in the fault reconstructed method. With the increase of iterative step, the sensor fault estimation signal can track the actual fault tightly including slow- and fast- varying fault. In order to verify the effectiveness of the proposed fault diagnosis method, three kinds of sensor faults are taken into consideration in the simulation part. The results show that the reconstructed fault signal can track the actual fault well despite of the kinds of sensor faults.