Application of Physical Modeling and Virtual Simulation Technology in Measuring the Performance of Subway Train Tracking and Operation

Abstract

The purpose of this paper is to study the application of virtual simulation technology in the measurement of subway train tracking performance. Firstly, the safety braking model required by virtual reconnection technology is discussed around the operation simulation and performance measurement of virtual reconnection. The two trains are combined into ”one virtual reconnection train set”, the tracking train and the head train run with relative moving block, and the two run with the front train set with moving block. Then, according to the characteristics of Metro train tracking operation, a virtual reconnection model and an improved station tracking model are proposed for the bottleneck area of the station. Finally, the proposed model is verified by numerical calculation and computer simulation modeling. The simulation results reproduce the dynamic characteristics of train flow during metro train operation. The results show that the departure interval and minimum tracking interval of the train are all 58 s. The improved station tracking model has the moderate passing capacity as the relative moving block, and the virtual reconnection model has the largest passing capacity. After the initial delay of the system, the delay recovery ability of the virtual reconnection model is the strongest.