安全高效跟驰状态下的后车行为控制  

Control of the Following Vehicle's Behavior under the Safe and Efficient Following State

作　　者：潘登[1] 梅萌[1] 郑应平[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《铁道学报》2015年第11期63-69,共7页Journal of the China Railway Society

基　　金：国家自然科学基金(61174183)

摘　　要：安全高效跟驰状态下,后车应当根据前车的行为变化科学调整自身行为,才不至于失去安全高效跟驰状态。首先,建立安全跟驰车距随速度变化的拟合函数,作为后车行为调整的依据,并与目标距离速度控制方式相比较,讨论了全速域范围内一般跟驰情形任意速度条件下绝对安全车距计算对于列车运行控制的重要性。然后,基于后车行为调整单元的始末时间,提出安全车距实时跟踪条件下的两种速差控制律的计算方法,处于安全高效跟驰状态下的后车可根据前车行为变化做适应性调整。仿真实验显示,实际车距能够通过后车行为的科学调整得到很好的控制,而且车辆跟驰时隙可以减小至0,这为安全行车条件下进一步提高行车组织效率提供了工程实现方法。Under the safe and efficient following state, the fol the behavioral change of the preceding vehicle, so as to avoid First, the fitting function of safe following distance changing following vehicle＇s behavioral adjustments, to discuss the ing distance to automatic train control under general follow lowing vehicle should scientifically adapt itself to the loss of the safe and efficient following state. with velocity is established as a criterion importance of calculating the absolute ing situation with any following speed safety within for the follow- full-velocity field in comparison with the ＂distance-to-go＂ speed control mode. Next, with the start and end time of the following vehicle＇s behavioral adjustment unit as references, two algorithms of velocity-difference control laws are proposed respectively based on the real-time tracking of dynamic safety following distance, by which the following vehicle in the safe and efficient following state can adapt itself to the behavioral change of the preceding vehicle. The simulation shows that the actual following distance can be well controlled by the high-quality behavioral adjustments of the following vehicle, and the time-gap of vehicle departure can be reduced to Os, which can provide a practical engineering realization method for the further improvement of vehicle organization efficiency under safety.

关 键 词：交通工程 车辆行为调整 跟驰控制 安全跟驰车距 安全高效跟驰状态 

分 类 号：U49[交通运输工程—交通运输规划与管理]