arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2301.00337cs.RO
收藏

具有长柔性被动近端段的可分离腱驱动机器人操作器

Separable Tendon-Driven Robotic Manipulator with a Long, Flexible, Passive Proximal Section

Texas A&M University(德州农工大学);Siemens Healthineers(西门子医疗);Brigham and Women’s Hospital(布莱根妇女医院);Harvard Medical School(哈佛医学院)

Christian DeBuys, Florin C. Ghesu, Jagadeesan Jayender, Reza Langari, Young-Ho Kim

AI总结:

本文针对医疗场景中长柔性被动近端段腱驱动机器人操作器的驱动与灭菌难题,提出可分离结构设计,并开发冗余控制器及迟滞与张紧补偿方法,实验表明可有效降低远端末端误差。

摘要:

本工作解决在医疗应用中使用具有长、柔性、被动近端段的腱驱动机器人操作器(TDRM)时出现的实际问题。腱驱动装置因其通过微创手术改善治疗效果而在医学中受到青睐,但TDRM带来了独特的挑战,例如灭菌与重复使用、腱的同步控制、腱-鞘机构中的迟滞现象以及近端段形状的未建模效应。本文介绍了一种可分离的TDRM,克服了驱动和灭菌方面的困难,其中包含电子器件的本体可重复使用,其余部分为一次性。开发了一种开环冗余控制器,用于解决运动学中的冗余问题。基于装置的物理特性,提出了简单的线性迟滞补偿和重新张紧补偿。该控制器和补偿方法在一个测试平台上进行了评估,测试条件包括直近端段、处于不同静态角度的弯曲近端段以及动态改变角度的近端段;总体而言,远端末端误差得到了降低。

英文摘要:

This work tackles practical issues which arise when using a tendon-driven robotic manipulator (TDRM) with a long, flexible, passive proximal section in medical applications. Tendon-driven devices are preferred in medicine for their improved outcomes via minimally invasive procedures, but TDRMs come with unique challenges such as sterilization and reuse, simultaneous control of tendons, hysteresis in the tendon-sheath mechanism, and unmodeled effects of the proximal section shape. A separable TDRM which overcomes difficulties in actuation and sterilization is introduced, in which the body containing the electronics is reusable and the remainder is disposable. An open-loop redundant controller which resolves the redundancy in the kinematics is developed. Simple linear hysteresis compensation and re-tension compensation based on the physical properties of the device are proposed. The controller and compensation methods are evaluated on a testbed for a straight proximal section, a curved proximal section at various static angles, and a proximal section which dynamically changes angles; and overall, distal tip error was reduced.

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。

↑