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RESEARCH PAPERS

Fault Detection in Linear Discrete Dynamic Systems by a Pattern Recognition of a Generalized-Likelihood-Ratio

[+] Author and Article Information
S. Tanaka

Department of Electronics Engineering, Yamaguchi University, Ube, 755 Japan

P. C. Müller

Department of Safety Control Engineering, Wuppertal University, D-5600 Wuppertal 1, Federal Republic of Germany

J. Dyn. Sys., Meas., Control 112(2), 276-282 (Jun 01, 1990) (7 pages) doi:10.1115/1.2896136 History: Received October 28, 1988; Revised May 08, 1989; Online March 17, 2008

Abstract

The detection of an abrupt change in the parameters of a linear discrete dynamical system is considered in the framework of the easily implemented generalized-likelihood-ratio (GLR) method. This paper proposes a robust detection method based on a pattern recognition of the maximum GLR provided by the conventional step-hypothesized GLR method. A numerical example demonstrates that the proposed method is highly superior to the conventional step-hypothesized GLR method and to the Chi-squared test in both detection rate and detection speed.

Copyright © 1990 by The American Society of Mechanical Engineers
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