城市轨道车辆最优牵引模型设计及计算

Optimal Traction Model Design and Calculation for Urban Rail Transit Vehicles

在城市轨道车辆牵引计算的力学模型基础上,说明牵引力、运行阻力、制动力等纵向力的计算方法及对车辆运行过程的影响。提出城市轨道车辆单质点模型,探讨加速度计算、运行速度和运行距离的数学模型。设计兼顾旅客舒适度、车辆运行时间、节能的最优牵引计算策略,分析该策略下城市轨道车辆牵引、惰行、制动工况的相互转换过程及各种能耗的计算方法。

Based on the mechanical traction calculation model for urban rail transit vehicles, the paper states the computational methods for such longitudinal forces as traction force, running resistance and braking force,etc. as well the impact on the vehicle operation process. It puts forward the single-particle model for urban rail transit vehicles,based on which the mathematical model calculating acceleration,running speed and running distance is discussed. It designs an optimal traction computation strategy incorporating passenger comfort,vehicle running time and energy conservation,analyses the interconversion process of traction,idle running and brake operation of urban rail transit vehicles based on such a strategy,as well as the computational methods for various energy consumption.