汽车工程 ›› 2021, Vol. 43 ›› Issue (4): 518-526.doi: 10.19562/j.chinasae.qcgc.2021.04.009

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基于势能场虚拟力的智能网联车辆运动规划

田洪清,丁峰,郑讯佳,黄荷叶,王建强()   

  1. 清华大学,汽车安全与节能国家重点实验室,北京 100084
  • 收稿日期:2020-04-08 修回日期:2020-08-20 出版日期:2021-04-25 发布日期:2021-04-23
  • 通讯作者: 王建强 E-mail:wjqlws@tsinghua.edu.cn
  • 基金资助:
    国家杰出青年科学基金(51625503);国家自然科学基金(61903217)

Motion Planning Based on Virtual Force of Potential Field for Intelligent Connected Vehicles

Hongqing Tian,Feng Ding,Xunjia Zheng,Heye Huang,Jianqiang Wang()   

  1. Tsinghua University,State Key Laboratory of Automotive Safety and Energy,Beijing 100084
  • Received:2020-04-08 Revised:2020-08-20 Online:2021-04-25 Published:2021-04-23
  • Contact: Jianqiang Wang E-mail:wjqlws@tsinghua.edu.cn

摘要:

传统人工势能场方法存在着纵向运动规划速度振荡、横向运动规划难以实现的问题。本文中建立了人工势能场虚拟力模型,提出了基于势能场虚拟力模型的车辆运动规划方法。通过评估自车与周边车辆的运动状态,生成位置和速度虚拟力,实现无振荡运动轨迹与速度规划。仿真结果表明:该方法能够实现安全、可行、平滑无碰撞的路径规划,并能克服传统势能场运动规划的振荡问题。通过与highD驾驶数据集中的车辆运动轨迹对比,表明基于势能场虚拟力的运动规划与真实交通环境下的运动状态基本相符,具有良好的实用性。

关键词: 智能网联车辆, 运动规划, 势能场, 虚拟力

Abstract:

Traditional artificial potential field method has the problems of speed oscillation in longitudinal motion planning, and difficulty in realization of lateral motion planning. A virtual force model based on artificial potential field is established in this paper and a motion planning method of vehicle based on virtual force model of potential field under intelligent connected traffic environment is proposed. By evaluating the motion state of the vehicle and its surrounding vehicles, a virtual force based on vehicle position and speed is generated, and the driving trajectory and speed planning of non?oscillating car following and lane changing are realized. The simulation results show that the proposed method can achieve safe, feasible and smooth collision?free path planning, and can overcome the oscillation problem in traditional potential field motion planning process. By comparing with the real trajectory in driving dataset of highD, it shows that the motion planning based on the virtual force of potential field is approximately consistent with the data of highD, which demonstrates its practicability.

Key words: intelligent connected vehicle, motion planning, potential field, virtual force