A hierarchical state ordering method for heterogeneous k-out-of-n:F systems with multi-state load-sharing components

被引:0
作者
Song, Minyuan [1 ]
Liang, Zhenglin [1 ]
机构
[1] Tsinghua Univ, Dept Ind Engn, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
Multi-state system; System reliability; Markov processes; Load-sharing; Order statistics; CONDITION-BASED MAINTENANCE; RELIABILITY; MODEL;
D O I
10.1016/j.ress.2025.111167
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
k-out-of-n systems are crucial models for ensuring reliability in critical applications by providing redundancy fault tolerance that mitigate system failure risks. While homogeneous k-out-of-n systems composed of pendent components generally demonstrate strong structural properties and can be computed efficiently, computational challenges of heterogeneous k-out-of-n systems with load-sharing remain underexplored. issue is the exponential growth of the state space, which lacks effective reduction methods. This paper vestigates a k-out-of-n:F system with heterogeneous multi-state components and load-sharing, proposing a state ordering problem aimed at designing and rearranging system states to reduce computational complexity reliability assessments. We introduce an ordered set with a rank function that establishes a new order relation the state space and calculates state indexes through a hierarchical mapping. This state ordering approach, enhanced by insights from order statistics, enables a block-wise representation of the transition rate matrix, significantly decreasing computational time for reliability and RUL calculations. A case study of a component bridge foundation system demonstrates that our approach reduces the transition rate matrix to about one-fifth, indicating a cubic reduction in computational complexity when using phase-type methods.
引用
收藏
页数:18
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