Probabilistic common cause failures in phased-mission systems
Probabilistic common cause failures in phased-mission systems
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DOI：
10.1016/j.ress.2015.07.004
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
Chaonan Wang;L. Xing;G. Levitin
中科院分区：
文献类型：
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作者：
Chaonan Wang;L. Xing;G. Levitin
系统中的可能共因故障（PCCF）是指由于共同的根本原因或冲击而导致多个系统组件发生相同或不同概率的故障。它们对整个系统的故障概率有很大的影响。因此，在系统可靠性分析中考虑PCCF的影响具有重要意义。据我们所知，没有研究已经做了多阶段任务系统（PMS）的可靠性分析PCCF。本文提出了一种显式方法和一种隐式方法来分析外冲击作用下含PCCF的永磁同步电机系统的可靠性。这两种方法都说明了通过无线传感器网络的例子进行了详细的分析。两个空间和计算的复杂性，以及优势进行了讨论和比较的两种方法。
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.