Coordinate Control Of Passenger Flow In Urban Rail Transit Line Based On Hierarchical Framework

In recent years,with the rapid development of economy,passenger demand is increasing year by year.Because of the convenience,punctuality,stability and other characteristics of rail traffic,it would attract millions of passengers to take rail transit every day.The rapid development of China’s rail transportation is also facing many challenges,the mainly problem is that the transport capacity can not fully cope with the passenger flow in peak hours.In this paper,the problem of passenger flow congestion of urban rail transit line is researched.On the basis of ensuring safty and efficient operation,we put forward the method of coordinated control of passenger flow in urban rail transit line.In this paper,the detail of study contents include:(1)The characteristics of the passengers in the city rail transit line is studied,analysed traffic distribution,traffic volume of the section,cross section load rate,and took the Beijing Metro Line 5 as an example to analyze the characteristics of passenger flow.(2)The hierarchical control structure of single line passenger flow control system is described and the structure is divided into three layers,the flow control task is assigned to the minimum control unit.(3)The coordinated control model of passenger flow is constructed by the linear programming method,take the total minimum residence time of passengers and maximum utilization rate of train surplus capacity as the objective function,take the capacity limit,platform infrastructure capacity limit,passenger transfer limit into constraint expression.(4)The improved particle swarm optimization algorithm is used to solve the objective function,usig the Anylogic simulation software to simulate the model,then analysis the output results and verify the validity of the model.