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Aggregated combinatorial reliability model for non-repairable parallel phased-mission systems

机译：不可修复并行相任务系统的组合组合可靠性模型

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摘要

Phased-mission systems (PMSs) are common in many real-world applications. A PMS has to accomplish a mission with multiple phases with varied requirements on system operation and demand. Reliability evaluation of PMSs is more challenging than single-phased systems due to dynamics in system configuration (or structure function) and component behavior, as well as inherent inter-phase dependence. Though many efforts have been dedicated to the PMS reliability analysis, it is still difficult to evaluate the reliability of a large-scale PMS with many phases. In this paper, we make original contributions by proposing a new combinatorial model, named aggregated binary decision diagram (ABDD) for reliability analysis of non-repairable parallel PMSs subject to dynamic demand requirements. The proposed approach constructs a single ABDD model considering failure combinations in all phases simultaneously, enabling efficient analysis of PMSs with many phases. The approach is also extended to address the effects of fault level coverage. Examples of PMSs with different scales are analyzed to demonstrate application and efficiency of the proposed ABDD-based approach.
机译：相控系统（PMS）在许多实际应用中都很常见。 PMS必须完成对系统操作和需求有不同要求的多个阶段的任务。由于系统配置（或结构功能）和组件行为的动态变化以及固有的相间依赖性，PMS的可靠性评估比单相系统更具挑战性。尽管已经为PMS可靠性分析付出了很多努力，但是仍然难以评估具有多个阶段的大型PMS的可靠性。在本文中，我们通过提出一种新的组合模型（称为聚合二进制决策图（ABDD））来为动态需求下不可修复的并行PMS进行可靠性分析做出了独特的贡献。所提出的方法构建了一个同时考虑所有阶段故障组合的单一ABDD模型，从而能够有效分析具有多个阶段的PMS。该方法还扩展为解决故障级别覆盖范围的影响。分析了具有不同规模的PMS的示例，以证明所提出的基于ABDD的方法的应用和效率。

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