多式联运环境下带时间窗的多产品运输问题研究

多式联运环境下带时间窗的路径选择问题是广泛应用于物流配送领域的一类组合优化问题，然而目前相关研究主要聚焦于多式联运环境下单个起点到单个终点的一种货物配送问题，其研究成果难以直接适用于汽车销售、钢铁运输等环境下单个供货商到多个零售商的多产品运输问题。因此，文中以汽车销售为研究背景，对多式联运环境下带时间窗的多产品运输问题进行研究，建立了该问题的数学模型，然后利用蚁群算法进行了求解，最后通过实验验证了算法的有效性。

A Multi-product Transportation Problem with Time Windows Research in the Multimodal Transportation Environment

Path selection problem with time windows in the multimodal transportation environment is a kind of combinatorial optimization problem which plays an important role in the fields of physical distribution and logistics.However, related studies focus mainly on freight distribution problem from a single origin to a single destination in the multimodal transportation environment,so the research results can not be directly applied to a multi-product distribution problem from one supplier to multiple retailers in the automobile sales and steel transportation system.This paper studies the path selection problem with time windows in the automobile sales sysytem of the mulimodal environment,stablishes the mathematical model of this problem,then solves the problem with improved ant colony algorithm and finally proves the algorithm effective through an experiment.