Simulation methods for system reliability using the survival signature
Simulation methods for system reliability using the survival signature
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DOI：
10.1016/j.ress.2017.06.018
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发表时间：
2017-11
期刊：
影响因子：
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通讯作者：
E. Patelli;G. Feng;F. Coolen;T. Coolen-Maturi
中科院分区：
文献类型：
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作者：
E. Patelli;G. Feng;F. Coolen;T. Coolen-Maturi
最近，生存特征被提出为结构函数的总结，它足以计算常见的可靠性度量，并且具有关键的优点，即它可以应用于具有故障时间不可交换的部件的系统。生存签名提供了例如用于其存储的所需信息的巨大减少，与全结构函数相比，其对较大系统的实现仍然难以以纯分析的方式实现，并且可能需要仿真来导出感兴趣的可靠性度量。因此，本文讨论的主要问题是生存信号是否提供了足够的信息来有效地模拟系统的故障时间分布。我们给出了两种基于生存签名的仿真算法，肯定地回答了这个问题。此外，我们还提出了一种可用于可修复部件情况的第三种仿真算法。事实证明，这些算法是非常有效的，超越了最初只需要生存签名而不是完整的结构函数的优点。
Recently, the survival signature has been presented as a summary of the structure function which is sufficient for computation of common reliability metrics and has the crucial advantage that it can be applied to systems with components whose failure times are not exchangeable. The survival signature provides a huge reduction in required information, e.g. for its storage, compared to the full structure function, its implementation to larger systems is still difficult in a purely analytical manner and simulations may be required to derive the reliability metrics of interest. Hence, the main question addressed in this paper is whether or not the survival signature provides sufficient information for efficient simulation to derive the system’s failure time distribution. We answer this question in the affirmative by presenting two algorithms for survival signature-based simulation. In addition, we present a third simulation algorithm that can be used in case of repairable components. It turns out that these algorithms are very efficient, beyond the initial advantage of requiring only the survival signature to be available, instead of the full structure function.