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Reliability Modeling of Fault Tolerant Control Systems Cover
By: Hongbin LI,  Qing Zhao and  Zhenyu Yang  
Open Access
|Jan 2008

Abstract

This paper proposes a novel approach to reliability evaluation for active Fault Tolerant Control Systems (FTCSs). By introducing a reliability index based on the control performance and hard deadline, a semi-Markov process model is proposed to describe system operation for reliability evaluation. The degraded performance of FTCSs in the presence of imperfect Fault Detection and Isolation (FDI) is reflected by semi-Markov states. The semi-Markov kernel, the key parameter of the process, is determined by four probabilistic parameters based on the Markovian model of FTCSs. Computed from the transition probabilities of the semi-Markov process, the reliability index incorporates control objectives, hard deadline, and the effects of imperfect FDI, a suitable quantitative measure of the overall performance.

DOI: https://doi.org/10.2478/v10006-007-0041-0 | Journal eISSN: 2083-8492 | Journal ISSN: 1641-876X
Language: English
Page range: 491 - 504
Published on: Jan 7, 2008
Published by: University of Zielona Góra
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2008 Hongbin LI, Qing Zhao, Zhenyu Yang, published by University of Zielona Góra
This work is licensed under the Creative Commons License.

Volume 17 (2007): Issue 4 (December 2007)