DESIGN OF DIRECTIONAL RESIDUALS FOR OPTIMAL TESTABILITY

Residuals in fault detection and diagnosis are usually designed with directional or structured properties to facilitate fault isolation. With directional residuals, best isolation is achieved if the residual directions are orthogonal. In the presence of noise, the residuals are subjected to statisti...

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Bibliographic Details
Published inIFAC Proceedings Volumes Vol. 35; no. 1; pp. 131 - 136
Main Authors Hu, Yongtong, Gertler, Janos
Format Journal Article
LanguageEnglish
Published 2002
Subjects
Directional residuals
Fault detection and diagnosis
Fault isolation
Fisher information matrix
Statistical testing
Fault isolation
Directional residuals
Statistical testing
Fault detection and diagnosis
Fisher information matrix
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Summary:Residuals in fault detection and diagnosis are usually designed with directional or structured properties to facilitate fault isolation. With directional residuals, best isolation is achieved if the residual directions are orthogonal. In the presence of noise, the residuals are subjected to statistical testing. Testing conditions are ideal if the Fisher information matrix of the residuals is diagonal. In this paper, we introduce a design technique which, subject to certain restrictions, provides orthogonal directions and diagonal information matrix simultaneously.
ISSN:1474-6670
DOI:10.3182/20020721-6-ES-1901.00753