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arXiv 2504.03260cs.ROcs.SYeess.SY
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基于梯度场的动态窗口方法用于复杂环境中的碰撞避免

Gradient Field-Based Dynamic Window Approach for Collision Avoidance in Complex Environments

Chalmers University of Technology(楚尔姆斯理工大学);University of Pennsylvania(宾夕法尼亚大学)

Ze Zhang, Yifan Xue, Nadia Figueroa, Knut Åkesson

AI总结:

本文提出基于梯度场的动态窗口方法(GF-DWA),利用障碍物距离梯度信息预判碰撞,提升多机器人系统在复杂非凸环境中的安全性和灵活性。

摘要:

为了在多机器人系统中实现安全且灵活的导航,本文提出了一种在复杂环境中的增强型、基于预测的采样轨迹规划方法,即基于梯度场的动态窗口方法(GF-DWA)。在动态窗口方法的基础上,所提出的方法利用障碍物距离的梯度信息作为新的代价项,以预判潜在的碰撞。这一增强使得机器人能够提高对障碍物(包括非凸形状障碍物)的感知能力。梯度场源自高斯过程距离场,该距离场通过利用高斯过程回归对环境的空间结构进行建模,同时生成距离场和梯度场。通过多个避障和编队避碰场景,所提出的GF-DWA在安全性和灵活性方面优于其他流行的轨迹规划和控制方法,尤其是在具有非凸障碍物的复杂环境中。

英文摘要:

For safe and flexible navigation in multi-robot systems, this paper presents an enhanced and predictive sampling-based trajectory planning approach in complex environments, the Gradient Field-based Dynamic Window Approach (GF-DWA). Building upon the dynamic window approach, the proposed method utilizes gradient information of obstacle distances as a new cost term to anticipate potential collisions. This enhancement enables the robot to improve awareness of obstacles, including those with non-convex shapes. The gradient field is derived from the Gaussian process distance field, which generates both the distance field and gradient field by leveraging Gaussian process regression to model the spatial structure of the environment. Through several obstacle avoidance and fleet collision avoidance scenarios, the proposed GF-DWA is shown to outperform other popular trajectory planning and control methods in terms of safety and flexibility, especially in complex environments with non-convex obstacles.

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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