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arXiv 2108.00301cs.RO
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利用触觉感知的旋转测量提高抓取稳定性

Improving Grasp Stability with Rotation Measurement from Tactile Sensing

Carnegie Mellon University(卡内基梅隆大学)

Raj Kolamuri, Zilin Si, Yufan Zhang, Arpit Agarwal, Wenzhen Yuan

摘要:

当物体在远离其重心的位置被抓取时,围绕抓取点的旋转位移是常见的抓取失败。具有软表面的触觉传感器,例如GelSight传感器,可以在物体旋转时检测接触表面上的旋转模式。在这项工作中,我们提出了一个基于模型的算法,检测这些旋转模式和测量旋转位移使用GelSight传感器。我们还将旋转检测反馈集成到闭环重抓取框架中,该框架在早期阶段检测到抓取的旋转失败,并驱动机器人到稳定的抓取姿态。我们验证了我们提出的旋转检测算法和抓取-再抓取系统的自我收集的数据集和在线实验,以显示我们的方法如何准确地检测旋转和提高把握稳定性。

英文摘要:

Rotational displacement about the grasping point is a common grasp failure when an object is grasped at a location away from its center of gravity. Tactile sensors with soft surfaces, such as GelSight sensors, can detect the rotation patterns on the contacting surfaces when the object rotates. In this work, we propose a model-based algorithm that detects those rotational patterns and measures rotational displacement using the GelSight sensor. We also integrate the rotation detection feedback into a closed-loop regrasping framework, which detects the rotational failure of grasp in an early stage and drives the robot to a stable grasp pose. We validate our proposed rotation detection algorithm and grasp-regrasp system on self-collected dataset and online experiments to show how our approach accurately detects the rotation and increases grasp stability.

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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