高侧滑漂移可提升冬季行车避障安全,实测显示高速时更有效。
Emergent Autonomous Drifting for Collision Avoidance in Real-World Winter Driving Scenarios
- 设计能自动触发漂移的非线性模型预测控制算法
- 高速下漂移控制器比传统稳定系统减少车道偏离中位数
- 适合研究自动驾驶在冰雪路面的应急控制策略
真实世界中的碰撞规避是研究车辆高侧滑漂移动力学与控制的核心目标,但以往的实践多局限于需刻意引入漂移的场景。本文探究在真实冬季驾驶条件下,漂移是否以及何时对安全最优。提出一种具备漂移能力的非线性模型预测控制(MPC)系统,基于车祸致死数据构建场景,在高保真模拟器中测试其应对道路偏离和对向来车碰撞避让的能力。该控制器在后轴遇冰时自然启动并维持漂移以保持路线,在对向车辆滑入本道时也可精准避让。与基准电子稳定控制系统(ESC)对比表明,具备漂移能力的控制器通过牺牲稳定性换取更高可控性,实现精准操控。蒙特卡洛随机冰面测试进一步显示,该控制器在多个速度下均取得更低的中位数车道偏离,且漂移现象主要出现在高速工况。
原文摘要 · Abstract (English)
Real-world collision avoidance is a core motivation for studying the dynamics and control of high sideslip drifting in vehicles, yet the practical benefit of such maneuvers has so far primarily been tested in scenarios explicitly engineered to require drifting. In this work, we explore the question of if and when drifting may be optimal for safety in real-world winter driving conditions. We present a drift-capable nonlinear model predictive control (MPC) system designed to handle scenarios grounded in crash fatality data and deploy the controller in a high fidelity simulator across road departure and oncoming vehicle collision avoidance scenarios. The controller naturally initiates and sustains drifting maneuvers to stay on the road when hitting a patch of ice on the rear axle and to avoid an oncoming vehicle that has slid into its lane. Comparisons with a benchmark electronic stability control (ESC) system demonstrate how a drift-capable controller can trade off stability for controllability to precisely maneuver through dangerous winter driving scenarios. A Monte Carlo study over random ice patches further shows that the drift-capable controller achieves lower median lane error than ESC across several speeds, while revealing that drifting emerges predominantly at higher speeds.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。