带有一个冷贮备部件的两部件串联系统机会维修策略

Opportunistic Maintenance Policy for Two-unit Series System with a Cold Standby Component

针对带有一个冷贮备部件的两部件串联系统,本文首先提出一种预防维修与机会维修相结合的维修策略,运用更新报酬定理求得长期运行情况下的单位时间期望维修成本函数的表达式,然后研究最优的机会维修阀值,运用微分学理论求解最优解,最后用实例验证理论的正确性,从实际例子说明本文提出的维修策略可明显节约维修成本,为相应的带有冷贮备的多部件串联系统的维修策略分析提供参考,对企业设备的维修有实际指导意义。

According to the two components series system with a cold standby unit, this paper proposes a mainte-naflce strategy mixing prevenuve repan anu oft, expected cost using the renewal reward theorem. The optimal opportunity repair threshold is studied, and the optimal solution is researched using differential calculus theory. Finally, the model is used for actual examples to verify the correctness of the analysis. It shows that the repair strategy proposed in this paper can save repair cost from the actual examples, and it provides reference for researching repair strategies of multi components series system with cold standby. This research gives helpful insight into equipment maintenance decision making in the real world.