提出可实时适配路面摩擦力的轨迹规划框架,提升自动驾驶赛车安全性与效率。
GripMap: An Efficient, Spatially Resolved Constraint Framework for Offline and Online Trajectory Planning in Autonomous Racing
- 用空间分辨的GripMap框架,在Frenet坐标系中动态建模路面摩擦力变化
- 通过完美哈希实现低存储高访问速度,支持离线与在线规划
- 适用于自动驾驶赛车场景,未来可支撑实时自适应学习算法
传统自动驾驶轨迹规划常假设车辆模型恒定,忽略了轮胎与路面作为力传递伙伴的动态关系——轮胎随车移动,而路面条件随位置变化。本文提出GripMap框架,首次在离线与在线规划中实现车辆动态约束的空间分辨率,基于Frenet坐标系对局部摩擦力条件进行建模,从而补偿位置相关效应,提升车辆行为效率与安全性。该框架强调低存储开销与快速访问,采用完美哈希技术实现高效存取。实测表明其在真实自动驾驶赛车应用中表现优越。未来可作为可解释学习算法的基础,支持实时响应路面摩擦力变化。
原文摘要 · Abstract (English)
Conventional trajectory planning approaches for autonomous vehicles often assume a fixed vehicle model that remains constant regardless of the vehicle's location. This overlooks the critical fact that the tires and the surface are the two force-transmitting partners in vehicle dynamics; while the tires stay with the vehicle, surface conditions vary with location. Recognizing these challenges, this paper presents a novel framework for spatially resolving dynamic constraints in both offline and online planning algorithms applied to autonomous racing. We introduce the GripMap concept, which provides a spatial resolution of vehicle dynamic constraints in the Frenet frame, allowing adaptation to locally varying grip conditions. This enables compensation for location-specific effects, more efficient vehicle behavior, and increased safety, unattainable with spatially invariant vehicle models. The focus is on low storage demand and quick access through perfect hashing. This framework proved advantageous in real-world applications in the presented form. Experiments inspired by autonomous racing demonstrate its effectiveness. In future work, this framework can serve as a foundational layer for developing future interpretable learning algorithms that adjust to varying grip conditions in real-time.
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。