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为了优化城市轨道列车牵引运行过程,使其运行更为准确、切近实际,通过建立列车多质点模型,以列车运动学方程为基础,采用混合优化牵引策略,对列车运行过程进行仿真。在牵引和制动受力分析过程中采用线性插值法,制动点选取通过反向试凑法获得。根据所设定的列车参数和线路参数,用Matlab进行编程与仿真。仿真结果表明,多质点模型与单质点模型相比可以有效提高列车经过变曲率段和变坡道段的附加阻力精度;线性插值法和混合优化牵引策略的应用,使牵引仿真过程更为接近实际运行过程,符合城轨列车准确、快速的运行要求,为城轨列车自动驾驶研究提供必要的理论依据。
In order to optimize the traction operation process of the urban rail transit train, make it run more accurately and closer to reality. Based on the kinematics equation of the train and the mixed optimization towing strategy, the train running process is simulated by establishing the train multi-mass point model. In the traction and braking force analysis process using linear interpolation method, the braking point selection by reverse trial and error method. According to the set train parameters and line parameters, with Matlab programming and simulation. The simulation results show that the multi-particle model can effectively improve the additional resistance accuracy of the train passing through the variable curvature section and the variable slope section compared with the single particle model. The linear interpolation method and the hybrid optimization traction strategy make the traction simulation process closer to reality Running process, in line with the city rail train accurate and rapid operation requirements for the urban rail automatic driving research to provide the necessary theoretical basis.