<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></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.

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

Institute of Automatics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland

Institute of Automatic Control and Robotics, Warsaw University of Technology, ul. Św. Andrzeja Boboli 8, 02-525 Warsaw, Poland

International Journal of Applied Mathematics and Computer Science

The diagnosis of multiple faults is significantly more difficult than singular fault diagnosis. However, in realistic industrial systems the possibility of...

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

Published Online: Dec 30, 2008

Page range: 465 - 476

DOI: https://doi.org/10.2478/v10006-008-0041-8

Keywords
automated diagnosis, diagnostic matrix, diagnostic rules, model-based diagnosis, consistency-based diagnosis

This content is open access.

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

Published Online: Dec 30, 2008

Page range: 465 - 476

DOI: https://doi.org/10.2478/v10006-008-0041-8

Keywordsautomated diagnosis, diagnostic matrix, diagnostic rules, model-based diagnosis, consistency-based diagnosis

This content is open access.

Keywords
automated diagnosis, diagnostic matrix, diagnostic rules, model-based diagnosis, consistency-based diagnosis