一体式仿象鼻机械手集成光学传感,实现精准抓取与多模感知。
MELEGROS: Monolithic Elephant-inspired Gripper with Optical Sensors
- 单次3D打印集成六传感器五气腔,无材料错配。
- 132克自重可举起两倍重量,能捏、舀、抓葡萄。
- 光学传感区分触觉与形变信号,适合精密操作场景。
象鼻是结构、驱动与传感高度融合的天然夹持器。受非洲象鼻远端形态启发,我们提出MELEGROS——一种一体式仿象鼻夹持器,将传感作为内嵌能力直接集成。通过单一软树脂与一次连续3D打印,将六条光学波导传感器与五个气动腔体整合进气动驱动的晶格结构(12.5 mm单元尺寸)中,避免了传感器、执行器与本体间的机械失配,降低模型不确定性,支持仿真指导的传感器设计与布局。仅经四轮迭代即完成最终原型,具备伸缩、压缩与弯曲能力,可解耦触觉与本体感觉信号。该装置(132克)可举起超过自身重量两倍的物体,实现捏取、舀取和伸展等生物启发动作,并能精细抓握葡萄等易碎物。集成光学传感器对触摸、弯曲及腔体变形产生不同响应,实现多功能感知。MELEGROS展示了软体机器人新范式:全嵌入式传感与连续结构共同支撑多样化的仿生操作。
原文摘要 · Abstract (English)
The elephant trunk exemplifies a natural gripper where structure, actuation, and sensing are seamlessly integrated. Inspired by the distal morphology of the African elephant trunk, we present MELEGROS, a Monolithic ELEphant-inspired GRipper with Optical Sensors, emphasizing sensing as an intrinsic, co-fabricated capability. Unlike multi-material or tendon-based approaches, MELEGROS directly integrates six optical waveguide sensors and five pneumatic chambers into a pneumatically actuated lattice structure (12.5 mm cell size) using a single soft resin and one continuous 3D print. This eliminates mechanical mismatches between sensors, actuators, and body, reducing model uncertainty and enabling simulation-guided sensor design and placement. Only four iterations were required to achieve the final prototype, which features a continuous structure capable of elongation, compression, and bending while decoupling tactile and proprioceptive signals. MELEGROS (132 g) lifts more than twice its weight, performs bioinspired actions such as pinching, scooping, and reaching, and delicately grasps fragile items like grapes. The integrated optical sensors provide distinct responses to touch, bending, and chamber deformation, enabling multifunctional perception. MELEGROS demonstrates a new paradigm for soft robotics where fully embedded sensing and continuous structures inherently support versatile, bioinspired manipulation.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。