Title :
A frequency domain based approach to fault identification [of electric drives]
Author :
Frank, P.M. ; Ding, X.
Author_Institution :
Dept. of Electr. Eng., Duisburg Univ., Germany
Abstract :
The problems of DC motor drive exact fault identification and optimally approximate fault identification are formulated and solved with the help of the frequency domain approach. Based on the parametrization of residual generators and their dynamics the problem of exact fault identification is studied. It is shown that instrument faults can be exactly identified if the system considered is stable. With the aid of the H∞ optimization technique the optimally approximate fault identification problem reduces to the well-known model matching problem, for which an algorithm is proposed. The proposed scheme is illustrated in terms of an example
Keywords :
DC motors; control system analysis; failure analysis; fault location; frequency-domain analysis; machine control; machine theory; optimisation; reliability; DC motor drives; H∞ optimization technique; algorithm; control system analysis; fault identification; frequency domain; instrument faults; machine control; model matching problem; parametrization; residual generators; Equations; Fault detection; Fault diagnosis; Frequency domain analysis; Instruments; Redundancy; Research and development management; Safety; System performance; Transfer functions;
Conference_Titel :
Industrial Electronics, 1992., Proceedings of the IEEE International Symposium on
Conference_Location :
Xian
Print_ISBN :
0-7803-0042-4
DOI :
10.1109/ISIE.1992.279665
