arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.13099cs.ROcs.SYeess.SY
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基于Frenet空间的自主驾驶长期决策和短期轨迹规划框架

An Autonomous Driving Framework for Long-term Decision-making and Short-term Trajectory Planning on Frenet Space

University of California, Santa Cruz(加州大学圣克鲁兹分校)

Majid Moghadam, Gabriel Hugh Elkaim

摘要:

在本文中,我们提出了一个层次结构的决策和规划的高速公路驾驶任务。我们利用智能驾驶模型(IDM和MOBIL)根据自我周围的交通状况生成长期决策。这些决定既能最大限度地提高自我性能,又能尊重其他车辆的目标。短期轨迹优化是在Frenet空间上进行的,以使计算对道路的三维曲率不变。针对运动障碍物,提出了一种新的基于Frenet框架的避障方法.优化探索驾驶走廊,以生成时空多项式轨迹,安全地通过交通导航,并服从BP命令。该框架还引入了一个启发式管理程序,用于识别意外情况,并在潜在紧急情况下重新计算每个模块。CARLA仿真实验表明,该框架在实现符合人类行为的各种驾驶风格方面具有潜力和可扩展性。

英文摘要:

In this paper, we present a hierarchical framework for decision-making and planning on highway driving tasks. We utilized intelligent driving models (IDM and MOBIL) to generate long-term decisions based on the traffic situation flowing around the ego. The decisions both maximize ego performance while respecting other vehicles' objectives. Short-term trajectory optimization is performed on the Frenet space to make the calculations invariant to the road's three-dimensional curvatures. A novel obstacle avoidance approach is introduced on the Frenet frame for the moving obstacles. The optimization explores the driving corridors to generate spatiotemporal polynomial trajectories to navigate through the traffic safely and obey the BP commands. The framework also introduces a heuristic supervisor that identifies unexpected situations and recalculates each module in case of a potential emergency. Experiments in CARLA simulation have shown the potential and the scalability of the framework in implementing various driving styles that match human behavior.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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