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An adaptive observer for sensor fault estimation in linear time varying systems

Author:Zhang Qinghua, INRIA, France
Topic:6.4 Safeprocess
Session:Fault Detection and Identification
Keywords: fault detection and isolation, linear time varying system, adaptive observer

Abstract

A method for sensor fault estimation inmultiple-input multiple-outputlinear time varying systems is proposed in this paper.It is based on a new adaptive observer for joint estimationof states and sensor faults in a state-space formulationof the monitored system.The exponential convergence of the algorithm is proved under some persistent excitation condition.