基于单质点模型的城市轨道交通列车动力学仿真

Dynamic Simulation of Urban Rail Transit Train Based on Single-Particle Model

城市轨道交通的建设发展需要实时、准确、快速地计算出列车在各种不同条件下的运行效果并予以评价,因此迫切需要对城市轨道车辆运行过程进行实时仿真模拟来完成牵引计算的任务。根据城市轨道交通列车运行实时仿真计算的要求,对单质点模型的特点进行研究和改进分析,建立列车动力学单质点改进模型,修正坡道简化、列车模型、工况自动选取等算法,加入列车本身的参数和线路参数,并建立仿真运算平台,最后对改进模型进行仿真验证分析以及时间复杂度分析,证明单质点改进模型在计算效率和计算精度上都达到较高的水平。

The construction and development of urban rail transit projects need to calculate the operation effects of a train and evaluate them under different conditions instantaneously,accurately and quickly,therefore a real-time simulation of the operation process of the urban rail vehicle is urgent so that traction calculation can be done.According to the requirements of real-time simulation of a running urban rail train,the features of single particle models are examined for improvement,and the improved single-particle model of train dynamics is built.The improved single-particle model amends the algorithms for ramp simplification,train model and auto-selection of working conditions,etc.includes the inherent train parameters and the line parameters and constructs a simulation computing platform.Through analyzing the simulation results and time complexity,the improved single-particle model is proved to have reached a high level in computing efficiency and accuracy.