Research On The Vehicle Scheduling Cost Optimization Of The Circulated Dropping And Pulling Transportation In A Enterprise

In our country,Many logistics enterprises have some problems,such as low efficiency,long waiting time and low mileage rate,These problems not only increase the operating costs of enterprises,but also hindered the development of the logistics industry in some degree.Therefore,how to solve these problems effectively is the transportation enterprises and the country pay close attention to.In developed countries,the drop and pull transport as a new mode of transportation,because it has the advantages of decreasing the transportation costs,improving the transportation efficiency and mileage rate,reducing the environment pollution,decreasing the waiting time and so on,has been widely extended and used in many transportation occasions.In this case,our country also begun to develop the drop and pull transport,because of the late development of the drop and pull transport,so,its technical level is still in a backward state,and need make further efforts to research and develop.The core problem of the drop and pull transport--the vehicle scheduling should get more attention and research.In this paper,firstly,Describing the research background,purpose,significance and also analyzing the domestic and foreign research situation of the drop and pull transport,finally,making the technology route map.Then this paper introduces the drop and pull transport definition and application scope,it also studies the organization pattern and the vehicle scheduling of the vehicle scheduling,and introduces the method to solve the vehicle scheduling problem.According to the actual transport to carry out A enterprises,to design a set of circulated dropping and pulling transportation scheme.This paper uses AHP method to solve the choice of yard,then establishes the vehicle scheduling optimization model of circulated dropping and pulling transportation,and converts the goal is to cost,the goal is to minimize the cost of the final goal.At the same time,we compare the heuristic algorithm and the advantages and disadvantages of each algorithm to solve the problem,finally,we select the simulated annealing algorithm,and use the MATLAB software for programming.Finally we get the best route of dropping and pulling transportation,calculate the transport cost,and compared with the traditional scheduling pattern,and then draw the circulated dropping and pulling transportation can reduce the transportation cost of about four thousand yuan every day for A enterprises.