中国物理B ›› 2023, Vol. 32 ›› Issue (7): 78801-078801.doi: 10.1088/1674-1056/acb0bc

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Stability of connected and automated vehicles platoon considering communications failures

Run-Kun Liu(刘润坤)1, Hai-Yang Yu(于海洋)1,2,, Yi-Long Ren(任毅龙)1,2,†, and Zhi-Yong Cui(崔志勇)1,2   

  1. 1 School of Transportation Science and Engineering, Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control, Beihang University, Beijing 100191, China;
    2 Beijing Advanced Innovation Center for Big Data and Brain Computing, Beihang University, Beijing 100191, China
  • 收稿日期:2022-10-10 修回日期:2022-12-06 接受日期:2023-01-06 出版日期:2023-06-15 发布日期:2023-06-21
  • 通讯作者: Yi-Long Ren E-mail:yilongren@buaa.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Project of China (Grant No. 2018YFE0204300), the Beijing Municipal Science & Technology Commission (Grant No. Z211100004221008), and the National Natural Science Foundation of China (Grant No. U1964206).

Stability of connected and automated vehicles platoon considering communications failures

Run-Kun Liu(刘润坤)1, Hai-Yang Yu(于海洋)1,2,, Yi-Long Ren(任毅龙)1,2,†, and Zhi-Yong Cui(崔志勇)1,2   

  1. 1 School of Transportation Science and Engineering, Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control, Beihang University, Beijing 100191, China;
    2 Beijing Advanced Innovation Center for Big Data and Brain Computing, Beihang University, Beijing 100191, China
  • Received:2022-10-10 Revised:2022-12-06 Accepted:2023-01-06 Online:2023-06-15 Published:2023-06-21
  • Contact: Yi-Long Ren E-mail:yilongren@buaa.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Project of China (Grant No. 2018YFE0204300), the Beijing Municipal Science & Technology Commission (Grant No. Z211100004221008), and the National Natural Science Foundation of China (Grant No. U1964206).

摘要: As a form of a future traffic system, a connected and automated vehicle (CAV) platoon is a typical nonlinear physical system. CAVs can communicate with each other and exchange information. However, communication failures can change the platoon system status. To characterize this change, a dynamic topology-based car-following model and its generalized form are proposed in this work. Then, a stability analysis method is explored. Finally, taking the dynamic cooperative intelligent driver model (DC-IDM) for example, a series of numerical simulations is conducted to analyze the platoon stability in different communication topology scenarios. The results show that the communication failures reduce the stability, but information from vehicles that are farther ahead and the use of a larger desired time headway can improve stability. Moreover, the critical ratio of communication failures required to ensure stability for different driving parameters is studied in this work.

关键词: connected and automated vehicle, car-following model, communication failures, string stability

Abstract: As a form of a future traffic system, a connected and automated vehicle (CAV) platoon is a typical nonlinear physical system. CAVs can communicate with each other and exchange information. However, communication failures can change the platoon system status. To characterize this change, a dynamic topology-based car-following model and its generalized form are proposed in this work. Then, a stability analysis method is explored. Finally, taking the dynamic cooperative intelligent driver model (DC-IDM) for example, a series of numerical simulations is conducted to analyze the platoon stability in different communication topology scenarios. The results show that the communication failures reduce the stability, but information from vehicles that are farther ahead and the use of a larger desired time headway can improve stability. Moreover, the critical ratio of communication failures required to ensure stability for different driving parameters is studied in this work.

Key words: connected and automated vehicle, car-following model, communication failures, string stability

中图分类号:  (Advanced vehicles)

  • 88.85.-r
89.40.-a (Transportation)