The Cartesian Hand: In-Hand Manipulation with All-Linear Fingers
作者: Boxi Xia, Bokuan Li, Ryan Shin, Zijiang Yang, Jiaxun Liu, Boyuan Chen
分类: cs.RO
发布日期: 2026-09-22
备注: 9 pages, 7 figures
💡 一句话要点
提出Cartesian Hand以解决灵巧抓取与相对操作的复杂性问题
🎯 匹配领域: 支柱一:机器人控制 (Robot Control)
关键词: 灵巧手 机器人操作 线性运动 独立抓取 相对操作 自动化 人机协作
📋 核心要点
- 现有的灵巧手虽然功能强大,但在机械和控制上复杂,难以实现高效的操作。
- Cartesian Hand结合了独立抓取与相对操作,采用线性运动简化了操作过程,提升了灵活性。
- 通过对35种物体的实验,展示了该手在多种实际应用中的有效性,尤其是在双手协作操作中表现突出。
📝 摘要(中文)
机器人操作越来越追求类似人类的灵巧手,尽管其提供了丰富的操作能力,但也带来了机械和控制的复杂性。另一方面,平行夹具虽然简单且稳健,但在抓取后几乎无法对物体进行操作。本文提出了Cartesian Hand,这是一种7自由度的末端执行器,通过仅使用线性运动重新构思了灵巧操作。该手具备独立抓取和相对操作的能力,适用于多种结构化物体的操作。实验表明,该手在多种场景下表现出色,包括实验室、制造和家庭环境中的多种操作任务。
🔬 方法详解
问题定义:现有的灵巧手在抓取后难以进行有效的物体操作,通常需要额外的夹具或协调运动,限制了其应用场景。
核心思路:Cartesian Hand通过将独立抓取与相对操作结合在一个末端执行器中,利用线性运动简化了操作过程,使得灵巧操作变得更为高效和灵活。
技术框架:该手由两个独立驱动的平行夹具和四个可移动的指尖组成,能够在抓取物体的同时实现相对运动。整体架构允许通过简单的线性运动原语组合进行复杂操作。
关键创新:最重要的创新在于其配置无关的指尖运动学,允许通过简单的线性运动实现复杂的操作,与传统灵巧手的复杂控制方式形成鲜明对比。
关键设计:设计中采用了独立驱动的夹具和指尖,确保了灵活的操作能力,具体参数和控制策略在论文中详细描述。实验中展示了该手在多种任务中的有效性和适应性。
🖼️ 关键图片
📊 实验亮点
实验结果表明,Cartesian Hand在35种不同物体的操作中表现出色,成功完成了如开瓶、移液、泵送等多种任务。与传统方法相比,其操作效率和灵活性有显著提升,尤其在双手协作操作中展现了优越性。
🎯 应用场景
Cartesian Hand的设计使其在多种应用场景中具有广泛的潜力,包括实验室操作、制造业和家庭日常任务等。其灵巧的操作能力能够显著提升机器人在复杂环境中的适应性和效率,未来可能在自动化和人机协作领域产生深远影响。
📄 摘要(原文)
Robotic manipulation has increasingly pursued human-like dexterous hands with many articulated degrees of freedom, offering rich manipulation capabilities at the cost of mechanical and control complexity. At the other extreme, parallel grippers are simple and robust, but provide little ability to manipulate an object after grasping it. Operating articulated objects such as threaded containers, manufacturing tools, and laboratory instruments often requires a second gripper, an external fixture, or coordinated arm motion. We introduce the Cartesian Hand, a 7-DoF end-effector that rethinks dexterous manipulation by combining independent grasping and relative manipulation within a single end-effector using only linear motion. Two independently actuated parallel grippers hold different parts of an object, while four translating fingertips generate relative motion between the grasped parts. Its configuration-independent fingertip kinematics allow manipulation to be composed from simple linear motion primitives. The Cartesian Hand is particularly suited to objects structured around common mechanisms such as threads, pivots, linear guides, plungers, and triggers. We demonstrate cap opening and closing, pipetting, pumping, two-handle manipulation, screwdriving, trigger actuation, and in-grasp reorientation across 35 objects spanning laboratory, manufacturing, and household settings. The same manipulation procedures transfer from a fixed-base robot arm to a humanoid, where we demonstrate bimanual laboratory manipulation using two Cartesian Hands. These results show that versatile in-hand manipulation capability can emerge from a mechanically simple architecture when independent grasping and relative motion are designed directly into the end-effector. We will open-source all software and hardware design. Our website is https://generalroboticslab.com/cartesian_handv1.