Optimization of system reliability in the presence of common cause failures
Optimization of system reliability in the presence of common cause failures
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DOI：
10.1016/j.ress.2006.09.004
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发表时间：
2007-10
期刊：
影响因子：
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通讯作者：
J. Ramírez-Márquez;D. Coit
中科院分区：
文献类型：
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作者：
J. Ramírez-Márquez;D. Coit
冗余分配问题制定的目标是最大限度地提高系统的可靠性，在存在共因故障。这些类型的故障可以描述为由于共同原因导致多个组件同时故障的事件。当考虑共因失效时，组件失效时间不是独立的。这种新的问题配方提供了几个不同的好处相比，传统的配方的冗余分配问题。对于某些系统，识别共因故障事件是至关重要的，以便整体系统可靠性估计和相关设计实际上类似于真实的系统可靠性行为。由于共因故障事件可能会有所不同，从一个系统到另一个，三个不同的解释的可靠性估计问题。这是第一次，混合的组件一起列入共同原因的故障事件已被解决的冗余分配问题。提出了三种非线性优化模型。三种不同类型的问题的解决方案。他们支持的立场，考虑共同原因的故障将导致不同的和首选的“最佳”设计策略。
The redundancy allocation problem is formulated with the objective of maximizing system reliability in the presence of common cause failures. These types of failures can be described as events that lead to simultaneous failure of multiple components due to a common cause. When common cause failures are considered, component failure times are not independent. This new problem formulation offers several distinct benefits compared to traditional formulations of the redundancy allocation problem. For some systems, recognition of common cause failure events is critical so that the overall system reliability estimation and associated design resembles the true system reliability behavior realistically. Since common cause failure events may vary from one system to another, three different interpretations of the reliability estimation problem are presented. This is the first time that mixing of components together with the inclusion of common cause failure events has been addressed in the redundancy allocation problem. Three non-linear optimization models are presented. Solutions to three different problem types are obtained. They support the position that consideration of common cause failures will lead to different and preferred “optimal” design strategies.