期刊
RELIABILITY ENGINEERING & SYSTEM SAFETY
卷 93, 期 7, 页码 1025-1035出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ress.2007.05.002
关键词
imperfect coverage of redundant systems; k-out-of-n systems; binary decision diagrams
In this article, we study the assessment of the reliability of redundant systems with imperfect fault coverage. We term fault coverage as the ability of a system to isolate and correctly accommodate failures of redundant elements. For highly reliable systems, such as avionic and space systems, fault coverage is in general imperfect and has a significant impact on system reliability. We review here the different models of imperfect fault coverage. We propose efficient algorithms to assess them separately (as k-out-of-n selectors). We show how to implement these algorithms into a binary decision diagrams engine. Finally, we report experimental results oil real life test cases that show on the one hand the importance of imperfect coverage and on the other hand the efficiency of the proposed approach.(C) 2007 Published by Elsevier Ltd.
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