两不同部件冷贮备系统的最优备件定购策略分析

Optimal Ordering Policies for a 2-unit Standby Redundant System

本文研究了两不同部件冷贮备系统的最优备件定购策略问题，特别把替换下来的部件所能回收的费用引入模型假设，并且紧急定购备件的交付周期为随机变量．得到了在一定条件限制下的最优通常定购时间，它使得经长期运行单位时间内的期望费用达到最小或者使得系统的稳态可用度达到最大．

This paper considers the optimal spare ordering policies for a cold standby redundant system with two dissimilar units. Especially, the salvage cost is discussed.and the expedited order lead time is assumed to be arbitrary. We show that, under certain conditions there exists a finite and unique optimum policy which minimize that cost or maximize the stationary availability.