Research On Method And System Of Inflow Control Of Urban Rail Transit Based On Bounded Rational Theory

With the development of urban rail transit and the completment of the network,the passenger flow is growing fast,which has brought congestion problem and threatened the operational safety of urban rail transit.It is urgent to find an effective solution.The essential reason for the crowding of passengers is that the capacity cannot meet the traffic demand.In the context that the density of departure interval has reached a certain upper limit during the crowded time,passenger flow control has become an effective way to solve this problem.Considering that passenger flow is dynamic and communicative in the road network,this paper uses the predicted passenger data as the basic data to develop a dynamic current limiting model,which is aimed at solving the crowding problems during morning and evening peaks.The main work of the study is as follows:(1)The theory of bounded rationality is introduced to analyze the generation of crowded passenger flow in urban rail transit.This includes analyzing the crowding generation and propagation of passenger flow in the road network,analyzing how the bounded rationality principle and the current limiting problem are combined,constructing the road network and and introducing the method of obtaining passenger flow data.(2)A networked dynamic inflow control model for urban rail transit based on bounded rationality theory is constructed.Firstly,the crowded station is determined according to the detention situation of passengers on the station platform,and the coordinated flow restriction station is determined by the passenger flow backtracking principle.Then the constraint conditions are constructed based on the passenger limited rational theory,and the road network level dynamic current limiting model is established by mathematical programming method.Finally,the feasibility of the model is verified by a small case analysis,and the application algorithm for solving the passenger flow control problem of large-scale railway network is designed.(3)According to the dynamic traffic flow control model at the road network level,this paper designed an urban rail transit passenger flow control system.Based on the SQL Server database,this paper uses C#language for system programming to design the system technology and system interface.The system can realize making the passenger flow control strategy of the railway network level and show the passenger flow control results.Taking Chengdu Metro as an example,a case study is carried out to illustrate that the formulation of current limiting measures has certain guiding significance for subway operators.(4)The main research results of this paper are summarized,and the shortcomings of the paper and the future research directions are put forward.