Sensor and actuator fault diagnosis of quantised systems

Author

Lunze, J. ; Schroder, J.

Author_Institution

Inst. of Control Eng., Tech. Univ. Hamburg-Harburg, Hamburg, Germany

fYear

2001

fDate

4-7 Sept. 2001

Firstpage

2753

Lastpage

2758

Abstract

The paper describes a method for detecting and identifying faults that occur in the sensors and actuators of quantised dynamical system described by a qualitative model. The paper is based upon a solution to sensor and actuator fault diagnosis for systems with discrete input and outputs. The solution scheme is similar to the generalised observer scheme that has been proposed several years ago for continuous-variable systems. The applied scheme consists of two parts. The first part detects the existence of a sensor or actuator faults while the second is used for fault identification. It is shown that the models used in the observers can be obtained from the overall model of the quantised system in a simple way. Experimental results illustrate the proposed diagnostic method.

Keywords

actuators; continuous systems; discrete event systems; fault diagnosis; observers; quantisation (signal); sensors; actuator fault diagnosis; continuous-variable systems; discrete event system; discrete input; discrete outputs; fault detection; fault identification; generalised observer scheme; qualitative model; quantised dynamical system; sensor; Actuators; Automata; Fault detection; Fault diagnosis; Mathematical model; Observers; Stochastic processes; discrete-event systems; fault diagnosis; qualitative modelling; stochastic automata;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 2001 European

Conference_Location

Porto

Print_ISBN

978-3-9524173-6-2

Type

conf

Filename

7076347