Simulation Research On Trackside Line And Train Of Urban Railway

Train control system is the key technical equipment in rail transit,which aims to guarantee the safety of train operation and improve transport efficiency.The simulation test of train control system can shorten test cycle,reduce test cost and improve efficiency of verification.In order to support verification,system level functional test of urban railway train control system,and optimize the problems existing in most of train control system simulation and testing platforms,such as weak real-time computing capacity,high coupling between subsystems,and poor maintainability.In this paper,the simulation research is carried out for the train control system of urban railway reconstructed from existing line.The main work of thesis includes the following four aspects:(1)Design of simulation and testing platform’s overall scheme for train control system of urban railway.According to the overall technical specifications of urban railway train control system and functions of train control system,the simulation and testing platform is divided into modules such as real-time simulation unit,trackside simulation unit,interlocking simulation,support equipment and on-board test tooling.By analyzing the working principle of subsystem and information interaction between modules,the overall scheme of the urban railway simulation and testing platform is designed.(2)Frame design and development of trackside simulation unit.This paper analyzes functional requirements of signal equipment in trackside simulation unit and completes design of database with conceptual data modeling method.Using the formal modeling method based on UML,static structure model and dynamic behavior model of trackside simulation unit are established,and detailed design of trackside simulation unit is completed based on the established UML model.(3)Modeling and implementation of real-time simulation unit.In order to solve the problems of weak real-time computing ability and inaccurate description of train’s longitudinal dynamic characteristics,a real-time simulation unit composed of driver’s console,data gather unit,communication processing unit and train dynamic model is designed.Based on Simulink,the single mass point and multi mass point train dynamic models are constructed to simulate driver’s driving and provide train operating information to simulation platform.(4)Feasibility studies of simulation and testing platform’s overall scheme.The paper completes unit test of trackside simulation and real-time simulation,and completes the joint test of the simulation test platform combined with the actual scene.The test results show that urban railway simulation and testing platform can provide a supporting environment for functional test of core equipment and verification of train control system.This paper contains 70 figures,13 tables and 54 references.