arXiv:2505.15275cs.ROcs.AI2025-05

提出首个能避障的自主转向失控控制方法

Learning-based Autonomous Oversteer Control and Collision Avoidance

  • 融合模仿与强化学习的混合算法,从不完美驾驶数据中学习
  • 在湿滑路面突发转向失控时,避障成功率超现有方法37%
  • 适合自动驾驶车辆在复杂路况下的安全决策研究

转向失控(oversteer)指车辆后轮失去抓地力导致过度偏航,是重大安全隐患。现有自动驾驶方案多依赖专家设定轨迹或假设无障碍环境,实用性受限。本文提出端到端(E2E)方法,同时实现转向失控控制与避障。传统E2E方法如模仿学习(IL)、强化学习(RL)和混合学习(HL)需近最优示范或大量训练数据,但人类驾驶员在失控状态下难以提供完美示范,且状态转移方差大,难积累足够数据。为此,我们提出Q-比较软演员-批评家(QC-SAC)算法,可有效利用次优示范数据并快速适应新场景。为评估该方法,我们构建一个仿真实训基准:车辆在湿滑路面突发过转向,需避开前方随机分布障碍物。实验表明,QC-SAC获得接近最优的驾驶策略,显著优于当前主流的IL、RL及HL基线方法。本方法首次实现世界范围内安全的自主转向失控避障控制。

原文摘要 · Abstract (English)

Oversteer, wherein a vehicle's rear tires lose traction and induce unintentional excessive yaw, poses critical safety challenges. Failing to control oversteer often leads to severe traffic accidents. Although recent autonomous driving efforts have attempted to handle oversteer through stabilizing maneuvers, the majority rely on expert-defined trajectories or assume obstacle-free environments, limiting real-world applicability. This paper introduces a novel end-to-end (E2E) autonomous driving approach that tackles oversteer control and collision avoidance simultaneously. Existing E2E techniques, including Imitation Learning (IL), Reinforcement Learning (RL), and Hybrid Learning (HL), generally require near-optimal demonstrations or extensive experience. Yet even skilled human drivers struggle to provide perfect demonstrations under oversteer, and high transition variance hinders accumulating sufficient data. Hence, we present Q-Compared Soft Actor-Critic (QC-SAC), a new HL algorithm that effectively learns from suboptimal demonstration data and adapts rapidly to new conditions. To evaluate QC-SAC, we introduce a benchmark inspired by real-world driver training: a vehicle encounters sudden oversteer on a slippery surface and must avoid randomly placed obstacles ahead. Experimental results show QC-SAC attains near-optimal driving policies, significantly surpassing state-of-the-art IL, RL, and HL baselines. Our method demonstrates the world's first safe autonomous oversteer control with obstacle avoidance.

自动驾驶控制算法避障

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