Application of Fully Decoupled Parity Equation in Fault Detection and Identification of DC Motors

Author

Chan, C.W. ; Hua, Song ; Hong-Yue, Zhang

Author_Institution

Dept. of Mech. Eng., Univ. of Hong Kong

Volume

53

Issue

4

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

1277

Lastpage

1284

Abstract

A multiple fault detection and identification method based on fully decoupled parity equations for dynamic systems with known linear and unknown nonlinear terms is presented. The fully decoupled parity equation vectors is derived and it is shown that the residuals generated from it are decoupled from other faults and the unknown nonlinear term and are sensitive only to specific actuator or sensor faults. The condition for the existence of the equation is also given. From the residuals generated from the fully decoupled parity equation, the faults are estimated using the recursive least-squares method. The performance of the proposed method is illustrated by applying it to detect, isolate, and identify faults in a simulated dc motor

Keywords

DC motors; fault diagnosis; least squares approximations; DC motors; fault detection; fault identification; faults estimation; fully decouple parity equation; recursive least-squares method; Actuators; Control systems; DC motors; Fault detection; Fault diagnosis; Nonlinear equations; Nonlinear systems; Robustness; Sensor systems; Uncertainty; Fault detection and identification; parity equation; recursive least-squares method;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2006.878304

Filename

1667925