汽车工程 ›› 2022, Vol. 44 ›› Issue (2): 179-189.doi: 10.19562/j.chinasae.qcgc.2022.02.004

所属专题: 智能网联汽车技术专题-规划&控制2022年

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云控场景下车辆队列的模型预测控制方法

赵菲1,王建1,张天雷1,2,王里2(),李德毅1,3   

  1. 1.北京航空航天大学交通科学与工程学院,北京 100191
    2.北京主线科技有限公司,北京 100191
    3.中国工程院,北京 100088
  • 收稿日期:2021-09-06 修回日期:2021-11-04 出版日期:2022-02-25 发布日期:2022-02-24
  • 通讯作者: 王里 E-mail:82182313@qq.com
  • 基金资助:
    国家重点研发计划(2019YFB1600100)

Model Predictive Control Method for Vehicle Platoon Under Cloud Control Scenes

Fei Zhao1,Jian Wang1,Tianlei Zhang1,2,Li Wang2(),Deyi Li1,3   

  1. 1.School of Transportation Science and Engineering, Beihang University, Beijing 100191
    2.Beijing Trunk Technology Co. , Ltd. , Beijing 100191
    3.Chinese Academy of Engineering, Beijing 100088
  • Received:2021-09-06 Revised:2021-11-04 Online:2022-02-25 Published:2022-02-24
  • Contact: Li Wang E-mail:82182313@qq.com

摘要:

鉴于采用边缘云进行集中式车辆队列控制时,通信时延将会降低队列控制性能指标甚至导致队列失稳,本文在考虑通信时延和车辆纵向非线性动力学特性前提下,从包括队列能效的多目标优化出发,提出了一种基于边缘云的队列集中式模型预测控制算法,并设计了一种时延补偿方法。首先分析了控制算法的渐进稳定性;然后通过不同时延下的仿真试验对控制算法的串稳定性和随机时延补偿方法在一定时延范围的有效性进行了验证;最后,分析了时延对队列稳定性和燃料消耗的影响。结果表明,随着时延增大,队列稳定性和燃料经济性变差,当时延均值为250 ms且时延抖动20%时,队列处于失稳的边缘。

关键词: 车辆队列, 云控, 时延, 集中式网联控制, 模型预测控制

Abstract:

In view of that when the edge cloud is used for centralized vehicle platoon control, the time delay in communications will degrade the performance indicators of platoon control, even result in the instability of platoon, proceeding from the multi-objective optimization of platoon efficacy with consideration of the time delay in communications and the nonlinear longitudinal dynamics characteristics of vehicle, an edge-cloud based centralized model predictive control algorithm for platoon is proposed and a time delay compensation method is designed in this paper. The asymptotic stability of the control algorithm is analyzed first. Then a simulation test is conducted on different time delays to verify the string stability of control algorithm and the effectiveness of random time delay compensation method in certain range of time delay. Finally, the effects of time delay on platoon stability and fuel consumption are analyzed. The results show that the platoon stability and fuel economy will worsen with the time delay increases and when the time delay reaches 250 ms with a fluctuation of 20% the platoon will be on the verse of instability.

Key words: vehicle platoon, cloud control, time delay, centralized network control, model predictive control