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Probabilistic common cause failures in phased-mission systems

机译:分相任务系统中的概率共因故障

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Probabilistic common cause failures (PCCFs) in a system are failures of multiple system components with the same or different probabilities due to a shared root cause or shock. They can contribute greatly to the overall system failure probability. Therefore, it is significant to incorporate effects of PCCFs into system reliability analysis. To the best of our knowledge, no research has been done on the reliability analysis of phased-mission systems (PMSs) subject to PCCFs. In this paper, we propose an explicit method and an implicit method to analyze reliability of PMSs with PCCFs caused by external shocks. Both methods are illustrated through detailed analyses of a wireless sensor network example. Both space and computational complexities as well as advantages are discussed and compared for the two proposed methods. (C) 2015 Elsevier Ltd. All rights reserved.
机译:系统中的概率共因故障(PCCF)是由于共享的根本原因或冲击而导致具有相同或不同概率的多个系统组件的故障。它们可以对整个系统的故障概率做出很大的贡献。因此,将PCCF的影响纳入系统可靠性分析是很重要的。据我们所知,尚未对受PCCF约束的相控系统(PMS)的可靠性进行研究。在本文中,我们提出了一种显式方法和一种隐式方法来分析由外部冲击引起的具有PCCF的PMS的可靠性。通过对无线传感器网络示例的详细分析来说明这两种方法。讨论并比较了所提出的两种方法的空间和计算复杂性以及优势。 (C)2015 Elsevier Ltd.保留所有权利。

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