交通运输系统工程与信息 ›› 2020, Vol. 20 ›› Issue (6): 114-120.

• 智能交通系统与信息技术 • 上一篇    下一篇

智能网联环境下复杂异质交通流稳定性解析

李霞*,汪一戈,崔洪军,朱敏清,王欣桐   

  1. 河北工业大学 土木与交通学院,天津 300401
  • 收稿日期:2020-08-21 修回日期:2020-09-17 出版日期:2020-12-25 发布日期:2020-12-25
  • 作者简介:李霞(1981-),女,河北新乐人,副教授,博士.
  • 基金资助:

    国家自然科学基金青年科学基金/Young Scientists Fund of the National Natural Science Foundation of China (51908187);国家自然科学基金/National Natural Science Foundation of China(51678212);河北省自然科学基金/Natural Science Foundation of Hebei Province, China(E2019202449).

Stability Analysis of Complex Heterogeneous Traffic Flow under Connected and Autonomous Environment

LI Xia, WANG Yi-ge, CUI Hong-jun, ZHU Min-qing, WANG Xin-tong   

  1. School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China
  • Received:2020-08-21 Revised:2020-09-17 Online:2020-12-25 Published:2020-12-25

摘要:

针对网联车辆与普通车辆构成的异质交通流,考虑网联车辆车对车(V2V)、车对基础设施(V2I)不同通信技术,研究复杂异质交通流稳定性.基于李雅普诺夫理论,分析对比不同通信技术下网联车辆与普通车辆构成的异质交通流稳定性;基于V2V、V2V/V2I的网联车辆和普通车辆以不同比例混合时,进行异质交通流稳定性判别及稳定域解析.通过数值仿真,验证理论解析的正确性.研究结果表明,基于V2V/V2I的网联车辆比基于V2V的网联车辆混入对异质交通流稳定性改善效果更显著.基于V2V、V2V/V2I的网联车辆同时汇入普通车辆交通流的情况下,当基于V2V的网联车辆比例较低时,不会明显提高异质交通流稳定性;而基于 V2V/V2I的网联车辆即使在低比例时,也会显著改善交通流稳定性;且基于V2V网联车辆比例较低时,平衡态临界速度值随着基于V2V/V2I网联车辆的比例增加近似呈线性减小.

关键词: 交通工程, 稳定性解析, 异质交通流, 网联车辆, V2V/V2I, 跟驰模型

Abstract:

Considering the vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication technologies of connected vehicles, the stability of the complex heterogeneous traffic flow composed of connected vehicles and regular vehicles was studied. Based on the Lyapunov theory, the stability of heterogeneous traffic flow under different communication technologies was compared. Then the stability conditions and stability region of heterogeneous traffic flow were analyzed when V2V- based connected vehicles, V2V/V2I- based connected vehicles, and regular vehicles are mixed with different proportion rates. The numerical simulations were carried out to verify the correctness of the theoretical analysis. The results show that the heterogeneous traffic flow mixed with V2V/V2I- based connected vehicles has a better stability effect than V2V- based vehicles. In the case of the V2V- based and V2V/V2I- based connected vehicles merge into traffic flow composed of regular vehicles, low penetration rates of V2V- based connected vehicles do not result in significant stability improvements, whereas stability is improved even at low penetration rates of V2V/V2I- based connected vehicles. In addition, when the penetration rates of V2V- based connected vehicles are low, the critical velocity of equilibrium increases approximately linearly as the proportion rates of V2V/V2I-based connected vehicles increases.

Key words: traffic engineering, stability analysis, heterogeneous traffic flow, connected vehicles, V2V/V2I, car following model

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