期刊
RELIABILITY ENGINEERING & SYSTEM SAFETY
卷 226, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ress.2022.108705
关键词
Auxiliary components; Dynamic importance; Preventive maintenance; Semi -regenerative process
资金
- Scientific Research Project of the Department of Education of Zhejiang Province [Y202146596]
- Key Scientific Research Projects of Wenzhou [ZG2020028]
- Science and Technology Planning Project of Pingyang [2020GYDX04]
A novel maintenance policy is proposed for a multi-component system, taking into account the multiple dependencies between components and their dynamic importance. The system's long-run average cost is derived by analyzing the reliability of the auxiliary and critical components and determining the optimal inspection period and maintenance threshold.
A novel maintenance policy for a multi-component system consisting of an auxiliary and a critical component is presented. The deterioration process of the components is described by the Markov process. Multiple dependence between components and the dynamic importance of components are considered. When the auxiliary component degrades to a certain state, it plays a decisive role in system reliability, and then the maintenance decision is made based on the reliability of the auxiliary component. At this time, if the critical component arrives at the state when preventive maintenance (PM) is demanded, it is repaired opportunistically as well as the auxiliary component. The long-run average cost of the system is derived by the technique of the semi-regenerative process. By minimizing the long-run average cost of the system, the optimal inspection period, the PM threshold of the critical component, and the threshold of the auxiliary component are determined. Finally, the effectiveness of the proposed strategy is illustrated by numerical cases.
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