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基于改进RRT* 与行驶轨迹优化的智能汽车运动规划

袁静妮 杨林 唐晓峰 陈傲文

袁静妮, 杨林, 唐晓峰, 陈傲文. 基于改进RRT* 与行驶轨迹优化的智能汽车运动规划. 自动化学报, 2022, 48(9): 2168−2177 doi: 10.16383/j.aas.c190607
引用本文: 袁静妮, 杨林, 唐晓峰, 陈傲文. 基于改进RRT* 与行驶轨迹优化的智能汽车运动规划. 自动化学报, 2022, 48(9): 2168−2177 doi: 10.16383/j.aas.c190607
Yuan Jing-Ni, Yang Lin, Tang Xiao-Feng, Chen Ao-Wen. Autonomous vehicle motion planning based on improved RRT* algorithm and trajectory optimization. Acta Automatica Sinica, 2022, 48(9): 2168−2177 doi: 10.16383/j.aas.c190607
Citation: Yuan Jing-Ni, Yang Lin, Tang Xiao-Feng, Chen Ao-Wen. Autonomous vehicle motion planning based on improved RRT* algorithm and trajectory optimization. Acta Automatica Sinica, 2022, 48(9): 2168−2177 doi: 10.16383/j.aas.c190607

基于改进RRT* 与行驶轨迹优化的智能汽车运动规划

doi: 10.16383/j.aas.c190607
基金项目: 国家自然科学基金(51875339)资助
详细信息
    作者简介:

    袁静妮:上海交通大学机械与动力工程学院博士研究生. 主要研究方向为混合动力汽车预测性能量管理策略与无人驾驶车辆运动规划.E-mail: lxrbhzj@outlook.com

    杨林:上海交通大学教授. 主要研究方向为混合动力、纯电动、燃料电池等新能源汽车动力系统及控制, 电动汽车动力电池集成与管理系统, 智能网联汽车节能与安全控制、智能驾驶. 本文通信作者.E-mail: yanglin@sjtu.edu.cn

    唐晓峰:工学博士, 上海交通大学机械与动力工程学院博士后. 主要研究方向为智能车辆, 混合增强智能, 智能空间. E-mail: 407699568@163.com

    陈傲文:上海交通大学机械与动力工程学院硕士研究生. 主要研究方向为混合动力能量管理, 整车控制, 无人驾驶车辆的运动规划和控制.E-mail: aowenchen@sjtu.edu.cn

Autonomous Vehicle Motion Planning based on Improved RRT* Algorithm and Trajectory Optimization

Funds: Supported by National Natural Science Foundation of China (51875339)
More Information
    Author Bio:

    YUAN Jing-Ni Ph.D. candidate at Shanghai Jiao Tong University. Her research interest covers predictive energy management strategy of hybrid electric vehicle and autonomous vehicle motion planning

    YANG Lin Professor at Shanghai Jiao Tong University. His research interest covers design and control of hybrid electric, pure electric, fuel cell and other new energy vehicle power systems, electric vehicle battery integration and management system, intelligent connected vehicle energy saving and safety control, and autonomous vehicle. Corresponding author of this paper

    TANG Xiao-Feng Ph.D., postdoctoral researcher at the School of Mechanical Engineering, Shanghai Jiao Tong University. His research interest covers intelligent vehicles, hybrid enhanced intelligence, and intelligent space

    CHEN Ao-Wen Master student at Shanghai Jiao Tong University. His research interest covers hybrid electric vehicle energy management, vehicle control, and autonomous vehicle motion planning and control

  • 摘要: 本文针对传统快速扩展随机树算法 (Rapidly-exploring random tree, RRT)搜索较慢、规划路径曲折、平顺性差等问题, 提出了一种结合改进RRT* 与贝塞尔曲线控制点优化的智能车辆运动规划方法. 该方法通过在给定概率分布下采样, 结合基于方向相似性的多步扩展与路径简化, 使用贝塞尔曲线拟合生成规划问题初始解, 最后使用序列二次规划优化曲线控制点, 从而在动态障碍物环境中生成兼具安全性与驾驶舒适性的车辆行驶轨迹. 在仿真实验中将本文算法与常规RRT及曲线拟合方法进行了比较, 结果显示本文算法在搜索速度、平顺性、安全性等方面有较大提升.
  • 图  1  算法结构

    Fig.  1  Algorithm structure

    图  2  候选节点

    Fig.  2  Candidate node selection

    图  3  多步节点扩展策略

    Fig.  3  Multi-step node extension strategy

    图  4  RRT* 方法与改进RRT* 的比较

    Fig.  4  Comparison of basic RRT* and improved RRT*

    图  5  轨迹简化与曲线拟合结果

    Fig.  5  Path simplification and curve fitting result

    图  6  贝塞尔曲线控制点优化结果

    Fig.  6  Bezier curve optimization result

    图  7  曲线平滑方法比较

    Fig.  7  Comparison of curve smooth methods

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出版历程
  • 收稿日期:  2019-08-27
  • 录用日期:  2019-11-16
  • 网络出版日期:  2022-08-12

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