Journal
APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY
Volume 31, Issue 3, Pages 380-393Publisher
WILEY
DOI: 10.1002/asmb.2010
Keywords
reliability evaluation; warm standby systems; fault level coverage; multivalued decision diagram; mission demand
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Funding
- China NSFC [71231001, 11001005, 71301009]
- China Postdoctoral Science Foundation [2013M530531]
- Fundamental Research Funds for the Central Universities [FRF-MP-13-009A, FRF-TP-13-026A]
- MOE PhD supervisor fund [20120006110025]
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For mission-critical or safety-critical systems, redundancy techniques are often applied to satisfy the stringent reliability requirements of the system design. Warm standby sparing is a common redundancy technique, which compromises the high energy consumption of hot standby techniques and the long recovery time of cold standby techniques. This paper considers a more general model for warm standby systems, that is, the demand-based warm standby system, where each component bears a nominal capacity and the system fails if the total capacity of the working components cannot meet the system demand. Moreover, fault level coverage is considered to model the imperfect coverage effect in the standby system. A multivalued decision diagram based approach is proposed to evaluate the reliability of the demand-based warm standby system subject to the fault level coverage. Examples are given to illustrate the proposed method. Copyright (c) 2014 John Wiley & Sons, Ltd.
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