Research On Coordination And Optimization Of Vehicle Flow Organization Based On Three-Level Service Network Of Loading Station-Technology Station-Discharge Station

With the advent of the Internet era and the change of people's consumption mode and consumption concept,the logistics industry is gradually recognized by the public,and it has become an indispensable part of human life.The increasingly fierce market competition environment makes the logistics industry realize that the application of modern technology and theory are very important to the development of logistics.Logistics distribution is an important part of the whole logistics system,and in distribution business,the most effective way to improve distribution efficiency,improve service quality and reduce transportation cost is Vehicle routing optimization.In this context,this paper studies the problem of vehicle scheduling optimization based on three-stage bidirectional closed-loop logistics network based on loading stations,technical stations and unloading stations.First introduced the three level bidirectional closed-loop logistics network organization coordination and Optimization for the research background and significance,then the problem is discussed,including the classification of elements of research at home and abroad,research methods,and carries on the summary,find the entry point of this study.Secondly,the optimization of traffic flow organization of three level logistics network based on single vehicle distribution center is studied.First,from the combination of forward and reverse logistics logistics integration optimization point,for each path transportation vehicle allocation and distribution center facilities operating cost control and decision problems,proposed a mixed integer programming model,and designed a genetic algorithm based on heuristic algorithm to solve.Finally,the optimization problem of traffic flow organization of three level logistics network based on multi vehicle distributed center is studied.The operation mechanism of the three level bidirectional closed loop operation network is analyzed,and the corresponding mathematical model is constructed with the minimum cost as the objective function.Based on the genetic algorithm,an improved genetic algorithm based on three region stepwise coding is innovatively designed.The coding scheme of the algorithm is constructed,and the rules of initial solution generation are set.The updating iteration process of the new improved genetic algorithm is listed in step by step,and the whole solution method of the algorithm is formed.This paper studies the three-level two-way closed-loop operation network,enriches the research content of vehicle optimization scheduling problems,and innovates the solution ideas.It is important for the logistics industry to optimize vehicle routing,optimize resource allocation,improve service quality,reduce logistics costs,and increase revenue.