- Language: English
- 324 Pages
- Published: January 2009
- Region: World
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Hierarchical Model-Based Diagnostics. Edition No. 1
- Published: February 2010
- 228 Pages
- VDM Publishing House
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.
Dr. Pierluigi Pisu is an Assistant Professor in Mechanical Engineering at Clemson University. He received his PhD in Electrical Engineering from the Ohio State University in 2002. He is member of the IEEE TC in Automotive Control, IFAC TC in Automotive Control, and Associate Editor of the Conference Editorial Board of the IEEE CSS.
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