两部件两修理工冷贮备系统维修更换策略

Maintenance and replacement policy of cold standby system with two components and two repairmen

为研究两个不同部件和两个修理工组成的可修冷贮备系统的维修更换策略,在故障部件都不能修复如新的条件下,利用几何过程和更新报酬定理,以系统中部件1的故障次数N为更换策略,得到系统长期运行单位时间平均费用的表达式.研究结果:通过数值算例求出其最优更换策略;在最优更换策略下比较两个修理工模型与一个修理工模型长期运行单位时间最优平均费用,得到一些数值结果.

In order to study the maintenance and replacement policy of cold standby repairable system with two components and two repairmen, under the condition of the failure units can＇t repair as new and by using the geometric process and the renewal reward theorem, this paper considered a kind of replacement policy N of the system based on the failure number of component 1, and obtained the explicit expressions of the long-run average cost per unit time under each replacement policy. The results show that through numerical example the optimal replacement policy can be found; and under the optimal replacement policy, this study compared two repairmen model and a repairman model of the long-run the optimal average cost per unit time, and some numerical results are obtained.