Finite Memory Observer for State Estimation of Hybrid System

Abstract

Both industry and the academic world are becoming more and more interested in techniques to model, analyze, control and supervise complex systems that contain both analog and logical components. Such systems are called hybrid systems. This paper presents extensions and improvements on the finite memory observer. The main contribution is to incorporate the parity relation design and observer into a diagnosis scheme. The application of the finite memory observer to the sensor fault detection problem is illustrated by a numerical example. Simulation results show that the method is very effective for robust fault detection.