Title :
Focusing fault localization in model-based diagnosis with case-based reasoning
Author :
Bregon, Anibal ; Pulido, Belarmino ; Aranzazu Simon, M. ; Moro, Isaac ; Prieto, Oscar ; Rodriguez Diez, Juan J. ; Alonso-Gonzalez, Carlos
Author_Institution :
Dept. of Comput. Sci., Univ. of Valladolid, Valladolid, Spain
Abstract :
Consistency-based diagnosis automatically provides fault detection and localization capabilities, using just models for correct behavior. However, it may exhibit a lack of discrimination power. Knowledge about fault modes can be added to tackle the problem. Unfortunately, it brings additional complexity issues, since it will be necessary to discriminate among a maximum of KN mode assignments, for N components and K possible fault modes per component. Usually, some kind of heuristic information is included in the diagnosis process to focus the model-based diagnostician. In this work we study the combination of a consistency-based diagnosis system together with a Case-based Reasoning system. The consistency-based diagnosis will perform fault detection and localization. The CBR system provides accurate indication of the most probable fault mode, at early stages of the localization process.
Keywords :
case-based reasoning; fault diagnosis; mechanical engineering computing; model-based reasoning; CBR system; K possible fault mode; KN mode assignment; case-based reasoning system; consistency-based diagnosis system; discrimination power; fault detection capability; fault diagnosis process; fault localization capability; heuristic information; model-based diagnostician; Cognition; Fault detection; Focusing; Heuristic algorithms; Laboratories; Proposals; Resistors; Case-Based Reasoning; Fault Diagnosis; Model-based Diagnosis;
Conference_Titel :
Control Conference (ECC), 2007 European
Conference_Location :
Kos
Print_ISBN :
978-3-9524173-8-6