汽车安全与节能学报 ›› 2023, Vol. 14 ›› Issue (2): 191-201.DOI: 10.3969/j.issn.1674-8484.2023.02.006
收稿日期:
2022-05-09
修回日期:
2022-11-18
出版日期:
2023-04-30
发布日期:
2023-04-27
通讯作者:
谢辉
作者简介:
*谢辉,教授。E-mail:xiehui@tju.edu.cn。基金资助:
XIU Guotao(), XIE Hui(), SONG Kang, BI Fengrong
Received:
2022-05-09
Revised:
2022-11-18
Online:
2023-04-30
Published:
2023-04-27
Contact:
XIE Hui
摘要:
提出了一种充分融合驾驶员经验的、低能耗的无人驾驶车辆平行泊车操作模型。将驾驶员平行泊车经验,描述为双梯形曲线图像的方向盘转角操作模型;对模型轨迹关键点位上的3个构型参数,建立平行泊车品质评价体系,得出参数对泊车品质的影响规律;考虑车辆运动学约束以及无碰撞约束,实现双梯形操作模型的优化与校正。在一辆6.6 m的无人驾驶客车上,进行了不同算法的对比验证,并在不同变量条件下进行了适应性验证。结果表明:相比传统的五次多项式轨迹规划和比例—积分—微分控制的泊车方法,用本操作模型,省去了循迹环节,使泊车过程更加流畅,且能耗降低达44.7%。
中图分类号:
修国涛, 谢辉, 宋康, 毕凤荣. 基于驾驶员经验的无人驾驶车辆平行泊车操作模型[J]. 汽车安全与节能学报, 2023, 14(2): 191-201.
XIU Guotao, XIE Hui, SONG Kang, BI Fengrong. Parallel parking operation model for driverless vehicles based on driver experiences[J]. Journal of Automotive Safety and Energy, 2023, 14(2): 191-201.
泊车算法 | 实时计 算耗时, Ttc / ms | 总耗时, Ttot / s | 总路程, St / m | 误差, ε / mm | 航向误差, εθ / mrad | 总能耗, E / kJ | 加加速度, Jv /(m·s-3) | 碰撞尺度, Lob / m | ||
---|---|---|---|---|---|---|---|---|---|---|
纵向 | 横向 | 纵向 | 横向 | |||||||
初始双梯形操作模型 | 0.879 | 13.21 | 13.72 | 6.2 | 28.9 | 8.5 | 1.913 | 2.79 | 3.68 | -0.78 |
预测轨迹+PID | 1.186 | 13.44 | 13.76 | -94.5 | 147.2 | 53.1 | 3.372 | 25.69 | 54.86 | -1.07 |
五次多项式轨迹+PID | 1.227 | 13.45 | 13.78 | -81.6 | 17.8 | -3.8 | 3.414 | 25.27 | 58.46 | -0.65 |
优化后双梯形操作模型 | 0.876 | 13.18 | 13.68 | -16.1 | 27.3 | -24.3 | 1.888 | 3.03 | 6.65 | -0.03 |
泊车算法 | 实时计 算耗时, Ttc / ms | 总耗时, Ttot / s | 总路程, St / m | 误差, ε / mm | 航向误差, εθ / mrad | 总能耗, E / kJ | 加加速度, Jv /(m·s-3) | 碰撞尺度, Lob / m | ||
---|---|---|---|---|---|---|---|---|---|---|
纵向 | 横向 | 纵向 | 横向 | |||||||
初始双梯形操作模型 | 0.879 | 13.21 | 13.72 | 6.2 | 28.9 | 8.5 | 1.913 | 2.79 | 3.68 | -0.78 |
预测轨迹+PID | 1.186 | 13.44 | 13.76 | -94.5 | 147.2 | 53.1 | 3.372 | 25.69 | 54.86 | -1.07 |
五次多项式轨迹+PID | 1.227 | 13.45 | 13.78 | -81.6 | 17.8 | -3.8 | 3.414 | 25.27 | 58.46 | -0.65 |
优化后双梯形操作模型 | 0.876 | 13.18 | 13.68 | -16.1 | 27.3 | -24.3 | 1.888 | 3.03 | 6.65 | -0.03 |
起始位置 | 起点 | 总评分,H / % | 总耗时,Ttot / s | 总能耗,E / kJ | 碰撞尺度,Lob / m | ||
---|---|---|---|---|---|---|---|
x / m | y / m | θ / mrad | |||||
1 | 13.0 | 3.5 | 0 | 86.85 | 13.63 | 1.160 | -0.118 |
2 | 13.2 | 5.6 | 300 | 85.30 | 14.51 | 1.121 | -0.258 |
3 | 18.0 | 4.5 | -240 | 80.13 | 15.25 | 1.555 | -0.594 |
起始位置 | 起点 | 总评分,H / % | 总耗时,Ttot / s | 总能耗,E / kJ | 碰撞尺度,Lob / m | ||
---|---|---|---|---|---|---|---|
x / m | y / m | θ / mrad | |||||
1 | 13.0 | 3.5 | 0 | 86.85 | 13.63 | 1.160 | -0.118 |
2 | 13.2 | 5.6 | 300 | 85.30 | 14.51 | 1.121 | -0.258 |
3 | 18.0 | 4.5 | -240 | 80.13 | 15.25 | 1.555 | -0.594 |
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