工龄更换策略下的备件库存决策研究

针对单部件系统工龄更换策略下备件需求的特点,建立了工龄更换策略与备件库存控制的联合优化模型。该模型通过分析一个订购期内工龄更换间隔期T及备件最大库存水平S对系统寿命分布的影响,建立了工龄更换间隔期、订购间隔期及最大库存水平与单位时间总费用（包括维修费用和库存费用）的关系,然后以单位时间总费用最小为目标,优化工龄更换间隔期T、订购间隔期t0及最大库存水平S。最后,基于案例,运用Matlab对模型进行数值计算,结果表明模型能有效地降低单位时间的总费用。

An Optimal Decision-making for Spare Part Stockage under Age Replacement Policy

In accordance with the characteristics of spare part demand of a single-unit system under age replacement policy,a joint optimization of age replacement policy and spare part inventory-control model(T,t0,S) is presented,where T is preventive replacement interval,t0 is inventory replenishment cycle length and S is the maximum stock level.In this model,by analyzing the effect of life distribution of a system caused by the preventive replacement interval and the maximum stock level,the relationship between the...