绩效保障视角下考虑虚警的可修复备件两级库存配置建模与优化

Modeling and Optimization on Two-echelon Inventory Allocation of Repairable Spar Parts Considering False Alarms from a Performance Assurance Perspective

针对虚警情况下可修复备件库存配置量虚高、各级站点库存配置偏离需求的问题,结合Metric理论,分析两级可修复备件保障过程的特征,引入维修过程中虚警故障鉴别系数,修正各级保障站点备件需求均值。考虑故障维修及虚警鉴别所产生的费用,并在满足系统绩效指标要求下,建立以保障费用最小为目标的库存配置模型。采用边际优化算法进行数值分析,通过对比是否包含虚警情况的备件库存配置方案,证明考虑虚警情况的模型能够提高对两级可修复备件库存配置量的预估精度。

In the case of false alarms,the inventory allocation of repairable spare parts is overestimated,and the inventory allocation of each station deviates from the demand.Combining the Metric theory,the characteristics of the two-echelon repairable spare parts support process are analyzed.The false alarm fault identification coefficient in the maintenance process is introduced to modify the average demand for spare parts of at each support station.Considering the cost of fault maintenance and false alarm identification,and satisfying the requirements of system performance indicators,an inventory allocation model aiming to minimizing the support cost is established.The marginal optimization algorithm is used for numerical analysis.By comparing the spare parts inventory allocation strategies with and without false alarms,it is proved that the model considering false alarms can improve the estimation accuracy of the two-echelon repairable spare parts inventory allocation.