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文章编号： 1672-6987（2025）04-0151-08DOI： 10.16351/j.1672-6987.2025.04.021
屈洋a， 李光耀b， 张晶a， 王涛b*（青岛科技大学 a.数理学院； b.自动化与电子工程学院， 山东 青岛 266061）
摘要： 现有关于车联网的研究多数基于共享信息可以完美获取的假设展开，而车载传感器及车与车之间通信的可靠性往往被忽略。为研究车联网环境下通信可靠性对交通流的影响，本文将信息可靠性融入多速度差模型，提出能够刻画实际车联网环境下交通流运行状态的微观交通流模型。首先，利用线性稳定性理论推导出模型的临界稳定条件；基于线性稳定性条件，进一步采用约化摄动法对所提模型进行非线性分析，得到能够描述密度波的扭矩-反扭矩解。理论分析结果表明，信息可靠性对交通流的稳定性影响显著。其次，根据理论解析结果得到相应的中性曲线和共存曲线，绘制出敏感系数与车头间距平面上的相图，该相图能够展示稳态、亚稳态和不稳态之间的相变过程。最后，通过数值模拟验证理论结果，结果表明车辆共享信息越接近当前车辆，对交通流稳定性的影响就越大。
关键词： 交通流； 线性稳定性分析； 非线性稳定性分析； 可靠性； 相变
中图分类号： U 491.1 文献标志码： A
引用格式： 屈洋， 李光耀， 张晶， 等. 车联网环境下通信可靠性对交通流的影响分析［J］. 青岛科技大学学报（自然科学版）， 2025， 46（4）： 151-158.
QU Yang， LI Guangyao， ZHANG Jing， et al. Analysis of communication reliability on traffic flow in the connected vehicles environment［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition）， 2025， 46（4）： -.
Analysis of Communication Reliability on Traffic Flow in the Connected Vehicles Environment
QU Yang2， LI Guangyao2， ZHANG Jing1， WANG Tao2（a. College of Mathematics and Physics； b. College of Automation and Electronic Engineering， Qingdao University of Science and Technology， Qingdao 266061， China）
Abstract： Most of the literatures on the connected vehicles （CVs） are based on the assumption that shared information can be perfectly obtained， while the reliability of on-board sensors and communication between vehicles is often ignored. In order to explore the impact of communication reliability on the traffic flow of CVs， this paper integrates the information reliability into the multi speed difference model， and proposes a microscopic traffic flow model that can describe the state of traffic flow in the connected environment. Firstly， the critical stability condition of the proposed model is derived by using linear stability theory； Based on the derived linear stability conditions， the reduction perturbation method is further used to conduct nonlinear analysis on the proposed model， and the kink-antikink soliton solution that can describe the density wave is obtained. The theoretical analysis results show that information reliability has a significant impact on the stability of traffic flow. Secondly， according to the theoretical analysis results， the corresponding neutral curve and coexistence curve are obtained， and the phase diagram on the plane between the sensitivity coefficient and the headway is given， which can show the phase transition process between steady state， metastable state and unstable state. Finally， the theoretical results are verified by numerical simulation. Simulation results show that the closer the vehicle sharing information is to the current vehicle， the greater the impact on the stability of traffic flow.
Key words： traffic flow； linear stability analysis； nonlinear stability analysis； reliability； phase transition
收稿日期： 2024-10-22
基金项目： 国家自然科学基金项目（71971125）； 山东省自然科学基金项目（ZR2021MG026）.
作者简介： 屈洋（1997—）， 女， 硕士研究生. * 通信联系人.
