系统工程与电子技术(英文版)
繫統工程與電子技術(英文版)
계통공정여전자기술(영문판)
JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS
2015年
3期
493-501
,共9页
opportunistic maintenance%multi-component system%structural dependence%Monte Carlo simulation%maintenance cost
Although opportunistic maintenance strategies are widely used for multi-component systems, al opportunistic mainte-nance strategies only consider economic dependence and do not take structural dependence into account. An opportunistic main-tenance strategy is presented for a multi-component system that considers both structural dependence and economic dependence. The cost relation and time relation among components based on structural dependence are developed. The maintenance strategy for each component of a multi-component system involves one of five maintenance actions, namely, no-maintenance, a minimal maintenance action, an imperfect maintenance action, a perfect maintenance action, and a replacement action. The maintenance action is determined by the virtual age of the component, the life expectancy of the component, and the age threshold values. Monte Carlo simulation is designed to obtain the optimal oppor-tunistic maintenance strategy of the system over its lifetime. The simulation result reveals that the minimum maintenance cost with a strategy that considers structural dependence is less than that with a strategy that does not consider structural dependence. The availability with a strategy that considers structural dependence is greater than that with a strategy that does not consider structural dependence under the same conditions.