Reducing time headway for platooning of connected vehicles via V2V communication
Reducing time headway for platooning of connected vehicles via V2V communication
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DOI：
10.1016/j.trc.2019.03.002
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发表时间：
2019-05
期刊：
影响因子：
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通讯作者：
Bian Yougang;Yang Zheng;W. Ren;S. Li;Jianqiang Wang;Keqiang Li
中科院分区：
文献类型：
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作者：
Bian Yougang;Yang Zheng;W. Ren;S. Li;Jianqiang Wang;Keqiang Li
在互联车辆的队列中，车头时距在交通容量和道路安全方面都起着重要作用。在满足车队稳定性的同时保持较低的车头时距是理想的，因为这会导致较高的交通容量并保证干扰衰减能力。在本文中，我们研究了一种多前驱跟随策略，以减少通过车辆到车辆（V2V）通信的时间车头时距。我们首先介绍了一个新的定义，所需的车辆间的距离的基础上恒定的时间车头时距（CTH）的政策，这是适用于一般的通信拓扑结构。通过利用下三角结构的时间车头时距矩阵和信息拓扑矩阵，我们得到了一组必要和充分条件的反馈增益的内部渐近稳定。通过分析反馈增益的稳定区域，得到了弦稳定性指标存在时距的充分必要条件。证明了当车头时距有下界时，车队是渐近稳定的，同时也是串稳定的。此外，这个界限可以通过增加前导的数量来减少。这些结果明确强调了V2V通信在减少联网车辆排队时间间隔方面的优势。
In a platoon of connected vehicles, time headway plays an important role in both traffic capacity and road safety. It is desirable to maintain a lower time headway while satisfying string stability in a platoon, since this leads to a higher traffic capacity and guarantees the disturbance attenuation ability. In this paper, we study a multiple-predecessor following strategy to reduce time headway via vehicle-to-vehicle (V2V) communication. We first introduce a new definition of desired inter-vehicle distances based on the constant time headway (CTH) policy, which is suitable for general communication topologies. By exploiting lower-triangular structures in a time headway matrix and an information topology matrix, we derive a set of necessary and sufficient conditions on feedback gains for internal asymptotic stability. Further, by analyzing the stable region of feedback gains, a necessary and sufficient condition on time headway is also obtained for the string stability specification. It is proved that a platoon can be asymptotically stable and string stable when the time headway is lower bounded. Moreover, this bound can be reduced by increasing the number of predecessors. These results explicitly highlight the benefits of V2V communication on reducing time headway for platooning of connected vehicles.