arXiv:2504.04970cs.ROcs.AI2025-04被引 6

高力矩夹爪融合多模感知,实现强抓握与自主感知协同。

A High-Force Gripper with Embedded Multimodal Sensing for Powerful and Perception Driven Grasping

  • 嵌入视觉、距离、惯性与声音传感器,实现本体感知驱动抓取
  • 最大抓握力达110N,支持动态运动与热态下的负载评估
  • 适合需要强力抓取与环境感知的复杂任务场景

现代人形机器人在执行涉及物体抓取与操作的任务时展现出巨大潜力,但多数情况下仅能处理低至中等负载和交互力。这主要受限于末端执行器的性能,难以匹配机械臂的可达负载能力,从而限制了可抓取与操作的负载上限。此外,传统夹爪缺乏充分的硬件级感知能力,抓取动作通常依赖机器人本体其他位置的感知传感器,易受手臂运动带来的遮挡影响。为此,我们开发了一款模块化高抓握力夹爪,集成多模态感知功能。该夹爪可在紧凑结构下实现110N的抓握力,并嵌入眼手相机、飞行时间(ToF)测距传感器、惯性测量单元(IMU)及全向麦克风,支持感知驱动的抓取功能。我们通过引入新型负载评估指标,结合机械臂动态运动与夹爪热状态,全面评估其抓握力性能;同时,通过感知引导的增强抓取操作验证了嵌入式多模态感知的有效性。

原文摘要 · Abstract (English)

Modern humanoid robots have shown their promising potential for executing various tasks involving the grasping and manipulation of objects using their end-effectors. Nevertheless, in the most of the cases, the grasping and manipulation actions involve low to moderate payload and interaction forces. This is due to limitations often presented by the end-effectors, which can not match their arm-reachable payload, and hence limit the payload that can be grasped and manipulated. In addition, grippers usually do not embed adequate perception in their hardware, and grasping actions are mainly driven by perception sensors installed in the rest of the robot body, frequently affected by occlusions due to the arm motions during the execution of the grasping and manipulation tasks. To address the above, we developed a modular high grasping force gripper equipped with embedded multi-modal perception functionalities. The proposed gripper can generate a grasping force of 110 N in a compact implementation. The high grasping force capability is combined with embedded multi-modal sensing, which includes an eye-in-hand camera, a Time-of-Flight (ToF) distance sensor, an Inertial Measurement Unit (IMU) and an omnidirectional microphone, permitting the implementation of perception-driven grasping functionalities. We extensively evaluated the grasping force capacity of the gripper by introducing novel payload evaluation metrics that are a function of the robot arm's dynamic motion and gripper thermal states. We also evaluated the embedded multi-modal sensing by performing perception-guided enhanced grasping operations.

机器人抓取多模态感知高力矩夹爪

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