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arXiv 2510.04585cs.RO
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Everything-Grasping (EG) Gripper:一种具备协同吸附抓取能力、可跨尺度跨状态操作的通用夹爪

Everything-Grasping (EG) Gripper: A Universal Gripper with Synergistic Suction-Grasping Capabilities for Cross-Scale and Cross-State Manipulation

Department of Mechanical Engineering, University of California, Berkeley(加州大学伯克利分校机械工程系);Department of Biomedical Engineering, The Chinese University of Hong Kong(香港中文大学生物医学工程系);Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong(香港中文大学机械与自动化工程系);Multi-scale Medical Robotics Center, Hong Kong, China(香港医学机器人多尺度中心);Department of Agricultural and Biological Engineering, Purdue University(普渡大学农业与生物工程系)

Jianshu Zhou, Jing Shu, Tianle Pan, Puchen Zhu, Jiajun An, Huayu Zhang, Junda Huang, Upinder Kaur, Xin Ma, Masayoshi Tomizuka

AI总结:

针对单夹爪难跨尺度、跨固液状态抓取的难题,提出整合分布式吸附与颗粒阻塞的EG软体夹爪,搭配触觉感知框架与TIGMS算法自主选模式,经多任务验证性能稳定,为首个统一架构的跨尺度固液抓取软体夹爪。

摘要:

用单个机器人夹爪抓取尺寸、物理状态差异极大的物体(包括固体和液体),仍是软体机器人领域的一项核心挑战。我们提出了Everything-Grasping (EG) Gripper,这是一种软体末端执行器,将分布式表面吸附与内部颗粒阻塞机制协同整合,无需与目标物体的接触界面形成气密密封,即可实现跨尺度、跨状态操作。EG夹爪可处理的物体表面积范围从亚毫米级的0.2 mm²(玻璃微珠)到超过62000 mm²(A4纸和编织袋),能够操作比自身接触面积(30 mm直径底座的接触面积约为707 mm²)小近3500倍、大88倍的物体。我们进一步提出了一种结合液体检测与基于压力的吸附反馈的触觉感知框架,可实时区分固体和液体目标。在触觉推断抓取模式选择(Tactile-Inferred Grasping Mode Selection, TIGMS)算法的引导下,该夹爪可基于分布式压力和电压信号自主选择抓取模式。在水下抓取、易碎物体处理、液体捕获等多种任务中的实验表明,该夹爪性能稳定且可重复。据我们所知,这是首款采用统一柔顺架构、能够可靠抓取跨尺度固体和液体物体的软体夹爪。

英文摘要:

Grasping objects across vastly different sizes and physical states-including both solids and liquids-with a single robotic gripper remains a fundamental challenge in soft robotics. We present the Everything-Grasping (EG) Gripper, a soft end-effector that synergistically integrates distributed surface suction with internal granular jamming, enabling cross-scale and cross-state manipulation without requiring airtight sealing at the contact interface with target objects. The EG Gripper can handle objects with surface areas ranging from sub-millimeter scale 0.2 mm2 (glass bead) to over 62,000 mm2 (A4 sized paper and woven bag), enabling manipulation of objects nearly 3,500X smaller and 88X larger than its own contact area (approximated at 707 mm2 for a 30 mm-diameter base). We further introduce a tactile sensing framework that combines liquid detection and pressure-based suction feedback, enabling real-time differentiation between solid and liquid targets. Guided by the actile-Inferred Grasping Mode Selection (TIGMS) algorithm, the gripper autonomously selects grasping modes based on distributed pressure and voltage signals. Experiments across diverse tasks-including underwater grasping, fragile object handling, and liquid capture-demonstrate robust and repeatable performance. To our knowledge, this is the first soft gripper to reliably grasp both solid and liquid objects across scales using a unified compliant architecture.

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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