考虑单位车辆运力的运输-库存随机需求决策模型

Decision model of transportation-inventory with considering capacity of a single truck under random demand

针对提前期和客户需求不确定的生产、运输和库存协调控制问题,基于整车直达运输策略,从优化系统物流成本角度,建立了在决策中明确体现单位车辆运力影响的运输-库存系统协调模型,设计了求解模型的优化搜索机制并从数学上证明了其有效性.最后,进一步对单位车辆运力进行敏感性分析并得出以下结论:在其他条件不变时,单位车辆的运力会影响系统决策结果,该运力既不是越大越好,也不是越小越好,而是某个适中值.

For the coordination control of production, transportation and inventory system in the presence of uncertainty in customer demands and lead time, from the point of optimizing logistics costs, the coordination model of transportation- inventory problem under the policy of direct shipping with truckload is established, and the effect of limited capacity of a railway truck on system decision is involved explicitly. A search procedure is advanced to solve the optimization cost model, and its superiority is also proved at mathematics. Finally, the numerical examples are presented to show that the capacity of a single truck can influence the optimal results.