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Importance analysis for reconfigurable systems

机译：可重构系统的重要性分析

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摘要

Importance measures are used in reliability engineering to rank the system components according to their contributions to proper functioning of the entire system and to find the most effective ways of reliability enhancement. Traditionally, the importance measures do not consider the possible change of system structure with the improvement of specific component reliability. However, if a component's reliability changes, the optimal system structure/configuration may also change and the importance of the corresponding component will depend on the chosen structure. When the most promising component reliability improvement is determined, the component importance should be taken into account with respect to the possible structure changes. This paper studies the component reliability importance indices with respect to the changes of the optimal component sequencing. This importance measure indicates the critical components in providing the system reliability enhancement by both enhancing the component's reliability and reconfiguring the system. Examples of linear consecutive-k-out-of-n: F and G systems are considered to demonstrate the change of the component Birnbaum importance with the optimal system reconfiguration. The results show that the change of the importance index corresponds to the change of the system optimal configuration and the importance index can change not monotonically with the variation of the component reliability.
机译：在可靠性工程中，重要的措施用于根据系统组件对整个系统正常运行的贡献来对系统组件进行排名，并找到增强可靠性的最有效方法。传统上，重要措施不考虑随着特定组件可靠性的提高而可能发生的系统结构变化。但是，如果组件的可靠性发生变化，则最佳的系统结构/配置也可能会发生变化，并且相应组件的重要性将取决于所选的结构。当确定最有希望的组件可靠性改进时，应考虑到可能的结构变化来考虑组件的重要性。本文研究了与最佳零件排序有关的零件可靠性重要性指标。此重要性度量表明通过增强组件的可靠性和重新配置系统来提供增强系统可靠性的关键组件。线性连续k出n的示例：F和G系统被认为是通过优化系统重新配置来证明Birnbaum分量重要性的变化。结果表明，重要性指标的变化与系统最优配置的变化相对应，重要性指标不会随组件可靠性的变化而单调变化。

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  • 来源
    《Reliability Engineering & System Safety》 |2014年第6期|72-80|共9页
  • 作者

    Shubin Si; Gregory Levitin; Hongyan Dui; Shudong Sun;

  • 作者单位

    School of Mechanical Engineering, Northwestern Polytechnical University, P.O. Box 554, Xi'an, Shaanxi 710072, PR China;

    The Israel Electric Corporation, P.O. Box 10, Haifa 31000, Israel;

    School of Mechanical Engineering, Northwestern Polytechnical University, P.O. Box 554, Xi'an, Shaanxi 710072, PR China;

    School of Mechanical Engineering, Northwestern Polytechnical University, P.O. Box 554, Xi'an, Shaanxi 710072, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Importance; Optimal structure; Allocation; Component reliability;

    机译：重要性;最佳结构;分配;组件可靠性;

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