运用中空超声电机的血管介入手术机器人系统
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TH789;TP242.3

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国家自然科学基金资助项目(51775274);江苏省自然科学基金资助项目(BK20170119);南京航空航天大学研究生创新基地(实验室)开放基金资助项目(kfjj20180103)


Master⁃Slave Controlled Robotic System Based on Hollow Ultrasonic Motor for Vascular Interventional Surgery
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    摘要:

    传统的血管介入手术需要医生在X射线下协同操控导丝、导管进行,不可避免的遭受X射线的辐射,而目前的血管介入机器人系统不能在一套装置上操控导丝和导管,限制了其使用范围。为了能在同一装置上操控导丝和导管,研制了基于中空超声电机的新型血管介入手术主从控制机器人系统,实现了在同一套装置中协同操控导丝、导管。根据中空超声电机的中空结构以及低速大扭矩的特点,设计出一种可协同操控导丝和导管的关键机构——中空旋转机构,并根据医生操控导丝和导管的习惯,设计出线性驱动机构。精选了比例?积分?微分控制器(proportion?integral?derivative,简称PID)控制算法并对该系统进行了主从跟随累计误差、滞后时间、最小操控分辨等实验。实验结果显示,系统作旋转运动和直线运动的主从跟随累计误差分别小于0.2°,0.4 mm,最小操控分辨率分别小于0.2°,0.4 mm,滞后时间小于300 ms,满足了临床基本要求。

    Abstract:

    The traditional vascular interventional surgery requires surgeons to operate the guidewires and catheters with X-ray, and surgeons are inevitably exposed to X-ray radiation. However, the current vascular intervention robot system cannot operate the guidewires and catheters on a set of device, which limits its application scope. To realize the manipulation of guidewires and catheters on the same device, a novel master-slave control robot system based on hollow ultrasonic motor is designed. According to the hollow characteristic of the hollow rotary ultrasonic motor, a kind of hollow mechanical structure is designed. The guidewire and catheter can be pierced from the hollow mechanism at the same time. The proportion-integral-derivative (PID) control algorithm is selected and the master-slave tracking accumulative error, lag time, minimum control resolution and other experiments are carried out on the system. The results show the error of the linear and rotary tracking performance is less than 0.4 mm and 0.2°, respectively. The minimum resolution of the linear and rotary tracking performance is also tested within 0.2 ° and 0.4 mm. The lag time is less than 300 ms.

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  • 在线发布日期: 2021-10-31
  • 出版日期: 2021-10-30
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