China Mechanical Engineering ›› 2026, Vol. 37 ›› Issue (8): 1865-1874.DOI: 10.3969/j.issn.1004-132X.2026.08.006

Previous Articles    

Overtaking Obstacle Avoidance Study Based on Unilateral-phase-by-phase Guided Potential Field

ZHANG Hongchang1,2,3(), YAN Wenbo1,2,3, ZOU Qizhan1,2,3, ZENG Juan1,2,3()   

  1. 1.Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan University of Technology,Wuhan,430070
    2.Hubei Province Collaborative Innovation Center for Auto Parts Technology,Wuhan University of Technology,Wuhan,430070
    3.Hubei Province New Energy and Intelligent Connected Vehicle Engineering Technology Research Center,Wuhan University of Technology,Wuhan,430070
  • Received:2025-05-21 Online:2026-08-25 Published:2026-09-17
  • Contact: ZENG Juan

基于单边-逐级引导势场的超车避障研究

张洪昌1,2,3(), 闫文博1,2,3, 邹奇展1,2,3, 曾娟1,2,3()   

  1. 1.武汉理工大学现代汽车零部件技术湖北省重点实验室, 武汉, 430070
    2.武汉理工大学汽车零部件技术湖北省协同创新中心, 武汉, 430070
    3.武汉理工大学湖北省新能源与智能网联车工程技术研究中心, 武汉, 430070
  • 通讯作者: 曾娟
  • 作者简介:张洪昌,男,1980年生,副教授。研究方向为智能网联汽车关键技术。E-mail:zhc112@126.com
  • 基金资助:
    教育部创新团队发展计划(IRT_17R83);新能源汽车科学与关键技术学科创新引智基地项目(B17034)

Abstract:

To effectively avoid obstacle vehicles during lane-changing and overtaking maneuvers, this study proposes a dynamic obstacle avoidance strategy based on a unilateral hierarchical guiding potential field. A unilateral repulsive field for obstacle vehicles is constructed using cubic quasi-uniform B-spline curves to achieve more accurate risk characterization. A dynamic target attractive field is established to provide hierarchical path guidance. Additionally, a waypoint oscillation identification and filtering method is introduced to suppress oscillations caused by large simulation steps. For precise trajectory tracking, a feedforward-augmented LQR predictive controller is designed based on a 2-DOF vehicle model. Co-simulation using Matlab/Simulink and CarSim, along with HIL tests, confirms the effectiveness and safety of the proposed strategy. The results show a mean lateral error of less than 0.08 m, an 18%‒25% reduction in key dynamic metrics such as front-wheel steering angle and sideslip angle, and a 10.3% reduction in overtaking distance.

Key words: lane changing, path planning and tracking control, improved artificial potential field method, linear quadratic regulator (LQR) control, hardware-in-the-loop(HIL)

摘要:

针对换道超车过程中的动态避障问题,提出一种基于单边-逐级引导势场的避障策略。结合三次准均匀B样条曲线构建障碍车单边斥力势场,以更准确地表征障碍车风险,在此基础上建立动态目标引力势场,实现逐级路径引导;提出一种路径点振荡识别与过滤方法,用于抑制因仿真步长偏大引起的路径振荡。为保障轨迹跟踪精度,基于二自由度车辆动力学模型和线性二次型调节器 (LQR)控制理论,设计了带有前馈控制量的LQR预测控制器。最后进行MATLAB/Simulink与CarSim联合仿真及硬件在环实验,结果表明:所提方法横向跟踪误差均值小于0.08 m,前轮转角与质心侧偏角等关键动力学指标的均值与峰值较传统人工势场法下降18% ~ 25%,超车完成距离平均缩短10.3%,验证了所提策略的有效性与安全性。

关键词: 换道超车, 路径规划和跟踪控制, 改进人工势场法, 线性二次型调节器控制, 硬件在环

CLC Number: