提出通用控制修正方法,提升自动驾驶在复杂场景下的安全性
A Generalized Control Revision Method for Autonomous Driving Safety
- 融合向量感知与占用栅格图,统一建模多种交通约束
- 在CARLA/SUMO/OnSite中验证安全控制修正能力,适配多种规划模型
- 无需依赖特定场景规则,可应对动态复杂路况,适合实车部署
自动驾驶的安全性是核心挑战之一,现有方法常通过在规划主干后添加控制修正模块来保障安全。控制屏障函数(CBF)因数学基础扎实被广泛采用,但其对异构感知数据的兼容性差,且未充分考虑交通场景要素,难以应用于动态复杂的现实场景。本文提出一种通用控制修正方法,同时以向量化感知和占用栅格图为输入,基于新提出的屏障函数全面建模多种交通场景约束。交通元素被整合进统一框架,与具体场景设定或规则解耦。在CARLA、SUMO和OnSite仿真平台上的实验表明,该算法可在复杂场景下实现安全控制修正,适应多种规划主干、道路拓扑和风险类型。物理平台验证进一步证明了其在真实场景中的可行性。
原文摘要 · Abstract (English)
Safety is one of the most crucial challenges of autonomous driving vehicles, and one solution to guarantee safety is to employ an additional control revision module after the planning backbone. Control Barrier Function (CBF) has been widely used because of its strong mathematical foundation on safety. However, the incompatibility with heterogeneous perception data and incomplete consideration of traffic scene elements make existing systems hard to be applied in dynamic and complex real-world scenarios. In this study, we introduce a generalized control revision method for autonomous driving safety, which adopts both vectorized perception and occupancy grid map as inputs and comprehensively models multiple types of traffic scene constraints based on a new proposed barrier function. Traffic elements are integrated into one unified framework, decoupled from specific scenario settings or rules. Experiments on CARLA, SUMO, and OnSite simulator prove that the proposed algorithm could realize safe control revision under complicated scenes, adapting to various planning backbones, road topologies, and risk types. Physical platform validation also verifies the real-world application feasibility.
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