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. In order to solve the problem of coordination of production, transportation and inventory with uncertain lead time and customer demand, a transport-inventory system coordination model that explicitly reflects the influence of unit vehicle capacity in decision-making is established from the perspective of optimizing system logistics cost. , An optimization search mechanism for solving the model is designed and its validity is proved mathematically.Finally, sensitivity analysis of unit vehicle capacity is carried out and the following conclusions are reached: Capacity of unit vehicles will affect the system when other conditions remain unchanged Decision-making results, the capacity is neither bigger nor better, nor is the smaller the better, but a moderate value.