BDD-based reliability evaluation of phased-mission systems with internal/external common-cause failures
BDD-based reliability evaluation of phased-mission systems with internal/external common-cause failures
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DOI：
10.1016/j.ress.2012.12.003
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
L. Xing;G. Levitin
中科院分区：
文献类型：
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作者：
L. Xing;G. Levitin
多阶段使命系统（PMS）是指为了完成一个成功的使命而按顺序完成多个不重叠的操作（或任务）阶段的系统。PMS的例子在航空航天、核能和机载武器系统等应用中比比皆是。PMS的可靠性分析必须考虑不同阶段的统计相关性以及系统配置、失效准则和组件行为的动态性。提出了一种基于二元决策图（BDD）的不可修二元状态共因失效（CCF）PMS可靠性评估方法。CCF是多个系统元件的同时故障，这可能是由一些外部因素（例如，雷击、环境的突然变化）或由源自系统内的某些元件的传播故障引起。本文考虑了外部和内部的CCF。该方法是组合的，精确的，适用于PMS与任意系统结构和组件的故障分布。通过一个不同CCF场景的实例分析，说明了该方法的应用和优点。
Phased-mission systems (PMS) are systems in which multiple non-overlapping phases of operations (or tasks) are accomplished in sequence for a successful mission. Examples of PMS abound in applications such as aerospace, nuclear power, and airborne weapon systems. Reliability analysis of a PMS must consider statistical dependence across different phases as well as dynamics in system configuration, failure criteria, and component behavior. This paper proposes a binary decision diagrams (BDD) based method for the reliability evaluation of non-repairable binary-state PMS with common-cause failures (CCF). CCF are simultaneous failure of multiple system elements, which can be caused by some external factors (e.g., lightning strikes, sudden changes in environment) or by propagated failures originating from some elements within the system. Both the external and internal CCF is considered in this paper. The proposed method is combinatorial, exact, and is applicable to PMS with arbitrary system structures and component failure distributions. An example with different CCF scenarios is analyzed to illustrate the application and advantages of the proposed method.