Novel fault detection criteria based on linear quadratic control performances

This paper proposes a new approach to designing a relatively simple algorithmic fault detection system that is potentially applicable in embedded diagnostic structures. The method blends the LQ control principle with checking and evaluating unavoidable degradation in the sequence of discrete-time LQ...

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Bibliographic Details
Published inInternational Journal of Applied Mathematics and Computer Science Vol. 22; no. 4; pp. 929 - 938
Main Authors Krokavec, Dušan, Filasová, Anna
Format Journal Article
LanguageEnglish
Published Zielona Góra Versita 28.12.2012
De Gruyter Poland
Subjects
Algorithms
Blends
Computer simulation
Control systems
Design engineering
discrete-time systems
Failure
Fault detection
fault detection schemes
LQ control methods
Mathematical models
performance degradation
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ISSN1641-876X
2083-8492
DOI10.2478/v10006-012-0069-7

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Summary:This paper proposes a new approach to designing a relatively simple algorithmic fault detection system that is potentially applicable in embedded diagnostic structures. The method blends the LQ control principle with checking and evaluating unavoidable degradation in the sequence of discrete-time LQ control performance index values due to faults in actuators, sensors or system dynamics. Design conditions are derived, and direct computational forms of the algorithms are given. A simulation example subject to different types of failures is used to illustrate the design process and to demonstrate the effectiveness of the method.
Bibliography:istex:4785267A29030777F584F42179D4A65626BFD502
v10006-012-0069-7.pdf
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ISSN:1641-876X
2083-8492
DOI:10.2478/v10006-012-0069-7