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arXiv 2409.14955cs.RO
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用于增强无碰撞机器人运动的高效碰撞检测框架

Efficient Collision Detection Framework for Enhancing Collision-Free Robot Motion

Shenzhen International Graduate School, Tsinghua University(清华大学深圳国际研究生院);School of Advanced Manufacturing, Sun Yat-sen University(中山大学先进制造学院)

Xiankun Zhu, Yucheng Xin, Shoujie Li, Houde Liu, Chongkun Xia, Bin Liang

AI总结:

本文提出基于SDF的SDF-SC高效碰撞检测框架,集成自碰撞检测并利用轻量级网络与可微特性优化轨迹,推理速度提升五倍且实现动态避障。

摘要:

快速高效的碰撞检测对于机器人运动生成至关重要。本文提出了一种基于机器人 Signed Distance Field (SDF) 的高效碰撞检测框架,并无缝集成了自碰撞检测模块。首先,我们利用正向运动学分解机器人的 SDF,并并行使用多个极轻量级网络来高效近似 SDF。此外,我们引入支持向量机将自碰撞检测模块集成到框架中,称之为 SDF-SC 框架。利用统计特征,我们的方法统一了 SDF 和自碰撞检测的碰撞距离表示。在此过程中,我们保持并利用框架的可微特性来优化无碰撞机器人轨迹。最后,我们基于该框架开发了一个反应式运动控制器,能够实时避开多个动态障碍物。在保持高精度的同时,我们的框架推理速度比之前的方法快达五倍。在 Franka 机械臂上的实验结果证明了该方法的有效性。

英文摘要:

Fast and efficient collision detection is essential for motion generation in robotics. In this paper, we propose an efficient collision detection framework based on the Signed Distance Field (SDF) of robots, seamlessly integrated with a self-collision detection module. Firstly, we decompose the robot's SDF using forward kinematics and leverage multiple extremely lightweight networks in parallel to efficiently approximate the SDF. Moreover, we introduce support vector machines to integrate the self-collision detection module into the framework, which we refer to as the SDF-SC framework. Using statistical features, our approach unifies the representation of collision distance for both SDF and self-collision detection. During this process, we maintain and utilize the differentiable properties of the framework to optimize collision-free robot trajectories. Finally, we develop a reactive motion controller based on our framework, enabling real-time avoidance of multiple dynamic obstacles. While maintaining high accuracy, our framework achieves inference speeds up to five times faster than previous methods. Experimental results on the Franka robotic arm demonstrate the effectiveness of our approach.

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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