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Lee, Seungchul
iSystems Design Lab
Research Interests
  • Intelligent design for products and manufacturing systems

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(n, N) type maintenance policy for multi-component systems with failure interactions

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Title
(n, N) type maintenance policy for multi-component systems with failure interactions
Author
Zhang, Z.Wu, S.Li, B.Lee, Seungchul
Keywords
failure interaction; maintenance policy; Markov decision processes; multi-component system; opportunistic maintenance
Issue Date
2015-04
Publisher
TAYLOR & FRANCIS LTD
Citation
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE, v.46, no.6, pp.1051 - 1064
Abstract
This paper studies maintenance policies for multi-component systems in which failure interactions and opportunistic maintenance (OM) involve. This maintenance problem can be formulated as a Markov decision process (MDP). However, since an action set and state space in MDP exponentially expand as the number of components increase, traditional approaches are computationally intractable. To deal with curse of dimensionality, we decompose such a multi-component system into mutually influential single-component systems. Each single-component system is formulated as an MDP with the objective of minimising its long-run average maintenance cost. Under some reasonable assumptions, we prove the existence of the optimal (n, N) type policy for a single-component system. An algorithm to obtain the optimal (n, N) type policy is also proposed. Based on the proposed algorithm, we develop an iterative approximation algorithm to obtain an acceptable maintenance policy for a multi-component system. Numerical examples find that failure interactions and OM pose significant effects on a maintenance policy.
URI
https://scholarworks.unist.ac.kr/handle/201301/8367
DOI
10.1080/00207721.2013.807386
ISSN
0020-7721
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DHE_Journal Papers
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