用非接触式传感器提前预测抓取稳定性,提升机器人抓取效率。
Contact-Free Grasp Stability Prediction with In-Hand Time-of-Flight Sensors

- 通过机械臂末端的多区飞行时间传感器实现不接触物体的抓稳预测。
- 在15个物体上训练,6个未见物体测试,准确率达85.5%~86.0%。
- 每秒15次循环,适合对速度要求高的真实场景应用。
当前机器人抓取规划方法虽成功率高,但在传感器噪声等干扰下性能下降。以往方法依赖接触检测抓取失败,而本工作提出一种基于安装在夹爪远端的多区域飞行时间(Time-of-Flight)传感器的非接触式抓取稳定性预测方法。该方法无需实际抓取即可完成预测,显著加速稳定性分类,支持15 Hz的运行频率。我们在15种物体上收集了超过2,500次真实抓取数据以训练分类器,并在另外6种未见过的物体上进行测试:3个用于验证与模型选择,3个用于最终评估。实验结果显示,该方法在验证集上达到85.5%的准确率,在测试集上达到86.0%。
原文摘要 · Abstract (English)
Current approaches to grasp planning for robotics demonstrate high success rates, but degrade with noisy sensors and other factors. Previous works have proposed tactile-based grasp stability classifiers to detect failures, but these approaches rely on making contact and grasping the object to do so. We propose a contact-free grasp stability predictor using multi-zone time-of-flight sensors mounted in the distal links of a gripper. Our method, as it does not require grasping the object to make a prediction, significantly speeds up the stability classification process, cycling at 15 Hz. We collected over 2,500 real-world grasps across 15 objects to train a classifier. Additionally, we conducted grasp attempts over six additional unseen objects, three for validation and model selection, and three for model testing. Our approach demonstrated strong classification performance, with an accuracy of 85.5% on validation and 86.0% on test objects.
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