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A New Approach to Multiple Fault Diagnosis: A Combination of Diagnostic Matrices, Graphs, Algebraic and Rule-Based Models. The Case of Two-Layer Models Cover

A New Approach to Multiple Fault Diagnosis: A Combination of Diagnostic Matrices, Graphs, Algebraic and Rule-Based Models. The Case of Two-Layer Models

Open Access
|Dec 2008

Abstract

The diagnosis of multiple faults is significantly more difficult than singular fault diagnosis. However, in realistic industrial systems the possibility of simultaneous occurrence of multiple faults must be taken into account. This paper investigates some of the limitations of the diagnostic model based on the simple binary diagnostic matrix in the case of multiple faults. Several possible interpretations of the diagnostic matrix with rule-based systems are provided and analyzed. A proposal of an extension of the basic, single-level model based on diagnostic matrices to a two-level one, founded on causal analysis and incorporating an OR and an AND matrix is put forward. An approach to the diagnosis of multiple faults based on inconsistency analysis is outlined, and a refinement procedure using a qualitative model of dependencies among system variables is sketched out.

DOI: https://doi.org/10.2478/v10006-008-0041-8 | Journal eISSN: 2083-8492 | Journal ISSN: 1641-876X
Language: English
Page range: 465 - 476
Published on: Dec 30, 2008
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2008 Antoni Ligęza, Jan Kościelny, published by University of Zielona Góra
This work is licensed under the Creative Commons License.

Volume 18 (2008): Issue 4 (December 2008)