Hierarchical Model-Based Diagnostics: Theoretical Results and Applications to Vehicle Systems

Hierarchical Model-Based Diagnostics: Theoretical Results and Applications to Vehicle Systems

von Pierluigi Pisu
Taschenbuch - 9783639232851
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Beschreibung

A new framework for hierarchical model-based fault diagnosis in complex systems that combines qualitative and quantitative methodologies and allows flexibility, modularity, and fault isolation with a reduced computational effort is presented. The framework is structurally divided into a passive and active component. The passive component represents the knowledge about the fault behavior of the system under analysis, while the active component is constituted by a supervisory process that uses the model-based knowledge for diagnosis. The fundamental novelty in the presented method is related to the use of fault propagation digraphs having weighted arcs with fault propagation probabilities and upper/lower bounds on fault propagation times, and nodes corresponding to active and activatable fault detection units. The introduction of these properties and components in the digraph, not only makes the proposed scheme more valuable than approaches as FMEA, event trees and FTA, but also allows the use of model-based FDI making the scheme simpler, more attractive and powerful than signed digraphs.

Details

Verlag VDM Verlag
Ersterscheinung Februar 2010
Maße 224 mm x 151 mm x 22 mm
Gewicht 347 Gramm
Format Taschenbuch
ISBN-13 9783639232851
Auflage Nicht bekannt
Seiten 228

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