Abstract: In the ideal tracking interval, the tracking train is susceptible to the operation of the preceding train; and effective braking must be taken to maintain the safety distance. In order to avoid the interference from the preceding train, improve the comfort of the tracking train and reduce the braking energy consumption of the train, the tracking process was firstly divided into different stages by using the idea of segmentation, and the coasting interval required for tracking the train in each stage was calculated separately. At the same time, Bang-Bang control idea was used to optimize the coasting interval in different stages, so as to ensure the operation efficiency of the line. Through the simulation analysis of MATLAB, the interval tracking spacing became larger after adding the coasting interval, but in exchange for better comfort of tracking train and lower braking energy consumption.

Key words: traffic and transportation engineering, railway transport, coasting interval, Bang-Bang control, high-speed train

摘要： 在理想的区间追踪间隔中，追踪列车易受到前行列车的运行影响，须采取有效的制动来保持安全距离。为了避免追踪列车受到来自前行列车的运行干扰，提高追踪列车的舒适性，减少列车制动能耗，首先采用切分的思想，将追踪运行的过程分为不同的阶段，分别计算各个阶段追踪列车所需要的惰行间隔；同时，运用Bang-Bang控制的思想，使得不同阶段的惰行间隔最优，以保证线路的运行效率。经MATLAB仿真分析，结果表明：加入惰行间隔之后，区间追踪间隔变大，但是换取了追踪列车更好的舒适性和更低的制动能耗。

关键词: 交通运输工程, 铁路运输, 惰行间隔, Bang-Bang控制, 高速列车