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arXiv 2404.04416cs.RO
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机器人腹腔镜手术中用于自适应远程运动中心的导纳控制

Admittance Control for Adaptive Remote Center of Motion in Robotic Laparoscopic Surgery

Charles V. Schaefer, Jr. School of Engineering and Science, Stevens Institute of Technology(史蒂文斯理工学院查尔斯·V·谢弗 Jr.工程与科学学院)

Ehsan Nasiri, Long Wang

AI总结:

针对腹腔镜手术中入口移动导致RCM约束冲突的问题,提出基于IDM力/力矩反馈估计RCM交互力并结合导纳控制与冗余度求解的自适应框架,已通过运动学仿真验证并建成硬件平台。

摘要:

在腹腔镜机器人辅助微创手术中,机器人的运动学控制在进入患者体内的入口(例如套管针)处受到远程运动中心(RCM)约束。手术过程中,在器械穿过套管针插入后,患者心跳、呼吸过程和/或其他有意的身体重新定位等内在生理运动可能使入口位置发生偏移。这会导致已注册的RCM与移动后的入口之间产生冲突。为缓解这一冲突,我们寻求利用RCM处的交互力。我们开发了一种新颖框架,将导纳控制集成到用于RCM运动学约束的冗余度求解方法中。利用器械驱动机构(IDM)基座处的力/力矩传感反馈,所提出的框架估计RCM处的力,抑制沿器械其他位置施加的力,并将这些力用于导纳控制器。本文报告了用于验证所提出框架的运动学仿真分析。此外,一个硬件平台已经完成,并计划在未来工作中进行实验验证。

英文摘要:

In laparoscopic robot-assisted minimally invasive surgery, the kinematic control of the robot is subject to the remote center of motion (RCM) constraint at the port of entry (e.g., trocar) into the patient's body. During surgery, after the instrument is inserted through the trocar, intrinsic physiological movements such as the patient's heartbeat, breathing process, and/or other purposeful body repositioning may deviate the position of the port of entry. This can cause a conflict between the registered RCM and the moved port of entry. To mitigate this conflict, we seek to utilize the interaction forces at the RCM. We develop a novel framework that integrates admittance control into a redundancy resolution method for the RCM kinematic constraint. Using the force/torque sensory feedback at the base of the instrument driving mechanism (IDM), the proposed framework estimates the forces at RCM, rejects forces applied on other locations along the instrument, and uses them in the admittance controller. In this paper, we report analysis from kinematic simulations to validate the proposed framework. In addition, a hardware platform has been completed, and future work is planned for experimental validation.

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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