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Component reassignment for reliability optimization of reconfigurable systems considering component degradation

机译：考虑组件劣化的可重构系统可靠性优化的组件重新分配

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摘要

This paper aims to optimize the lower bound of the reconfigurable system reliability by reassigning the degrading components, which is common in practical engineering systems. First, considering the reconfigurable linear consecutive k-out-of-n (Lin/Con/k/n) system, the reliability calculation method of components and the system with reassignment are derived, respectively. Then, the Delta importance (DI) based heuristics are proposed to perform component reassignment (CR). The heuristics utilize the importance ranking based on DI, searching the most important component to be reassigned iteratively. Third, CR problem (CRP) is presented to find the optimal time and scheme of reassigning components for maximizing the lower boundary of the system reliability during the mission. To address CRP, DI-based greedy algorithms are developed. Finally, the performance of the proposed methods is demonstrated by two experiments. Experiment 1 illustrates the effectiveness and efficiency of DI-based heuristics. Experiment 2 demonstrates the effectiveness and efficiency of DI-based greedy algorithms. In three situations, the average reliability improvement using DI-based genetic algorithm-greedy (DIGA-G) is improved by 24.35%, 19.98%, 12.95%, respectively. The results show that DIGA-G can achieve higher system reliability for CRP compared with the DI-based two-stage-greedy (DITS-G) algorithm.
机译：本文旨在通过重新分配降低组件来优化可重构系统可靠性的下限，这在实际工程系统中很常见。首先，考虑到可重新配置的线性连续k外k-ud-n（lin / con / k / n）系统，分别派生组件的可靠性计算方法和具有重新分配的系统。然后，提出了基于ΔImpordance（DI）的启发式来执行组件重新分配（CR）。启发式利用基于DI的重要性排名，搜索最重要的组件迭代地重新分配。第三，提出了CR问题（CRP），以找到重新分配组件的最佳时间和方案，以便在任务期间最大化系统可靠性的较低边界。为了解决CRP，开发了基于Di的贪婪算法。最后，通过两个实验证明了所提出的方法的性能。实验1说明了基于Di的启发式的有效性和效率。实验2展示了基于Di的贪婪算法的有效性和效率。在三种情况下，使用二维遗传算法 - 贪婪（Diga-G）的平均可靠性改善分别提高了24.35％，19.98％，12.95％。结果表明，与基于二级两级贪婪（DITS-G）算法相比，Diga-G可以实现CRP的更高系统可靠性。

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  • 来源
    《Reliability Engineering & System Safety》 |2021年第11期|107867.1-107867.14|共14页
  • 作者

    Ma Chenyang; Wang Qiyu; Cai Zhiqiang; Si Shubin; Zhao Jiangbin;

  • 作者单位

    Northwestern Polytech Univ Sch Mech Engn Dept Ind Engn Xian 710072 Peoples R China|Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab Ind Engn & Intelligent Mfg Xian 710072 Peoples R China;

    Northwestern Polytech Univ Sch Mech Engn Dept Ind Engn Xian 710072 Peoples R China|Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab Ind Engn & Intelligent Mfg Xian 710072 Peoples R China;

    Northwestern Polytech Univ Sch Mech Engn Dept Ind Engn Xian 710072 Peoples R China|Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab Ind Engn & Intelligent Mfg Xian 710072 Peoples R China;

    Northwestern Polytech Univ Sch Mech Engn Dept Ind Engn Xian 710072 Peoples R China|Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab Ind Engn & Intelligent Mfg Xian 710072 Peoples R China;

    Xian Univ Sci & Technol Sch Mech Engn Xian 710054 Peoples R 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

    Component reassignment; reliability optimization; component degradation; reconfigurable system; Delta importance measure;

    机译：组件重新分配;可靠性优化;组件劣化;可重新配置系统;达达重要的措施;

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