有限维修能力下舰载机可修复件库存优化模型

舰载机保障受维修渠道约束,维修能力有限.为使Palm定理和Metric理论适用于舰载机可修复件优化配置,基于排队理论,将有限维修渠道的实际维修时间与维修等待时间之和等效为无限维修渠道的平均维修时间,建立专业渠道、通用渠道和混合渠道的维修供应渠道修正模型.根据维修供应渠道修正模型,给出了两层级备件项的供应渠道备件数均值和方差模型.结合实例应用,分析了备件需求率和维修渠道数对维修时间的影响.对比分析了"有限维修渠道模型"和"无限维修渠道模型"库存方案的应用效果,并给出了各自的适用条件,结果表明了修正模型的有效性.

Optimization of carrier-based aircraft repairable spares inventory systems under limited maintenance ability

The repair capability of carrier-based aircraft is constrained by finite repair channels. To make Palm's theorem and Metric theory applicable to the optimal allocation of carrier-base aircraft repairable spares, the modified accommodative models of repair and supply channels under conditions of dedicated channels, general channels and hybrid channels were researched and proposed by making the sum of actual repair time and waiting time under finite repair channels equal to the repair time under infinite repair channels based on the queuing theory. According to the modified accommodative models, the mean and variance models of two indenture spares in repair and supply channels were found. Combined with the application instance, the impact of spares demand rate and the amount of repair channels on the repair time were analyzed. The application effect of the stockpiles programs under the finite repair channels model and infinite repair channels model were compared and analyzed. The applicable conditions of each model were given. And the results show that the modified accommodative models are effective.