一个新的滚动驱动原理启用线性执行器为双向平滑运动.
Dunfa Long1, Fujun Wang1, Chengzhi Hu2
1Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, School of Mechanical Engineering, Tianjin University, Tianjin 300072, China.
一个新的滚动驱动原理 (RDP) 提高了使用单个PZT的滑执行器运动的一致性. 这种RDP实现了高线性和低速度差异,使得像MRI兼容的微手术仪器这样的应用成为可能.
科学领域:
- 机械工程 机械工程
- 机器人技术 机器人技术 机器人技术
- 生物医学工程 生物医学工程
背景情况:
- 滑式执行器对于精确的运动控制至关重要.
- 现有的设计经常面临运动一致性和线性方面的挑战.
- 高精度的执行器是需要的先进的应用程序,如微手术.
研究的目的:
- 为了引入一项新的滚动驱动原理 (RDP) 用于滑驱动器.
- 为了提高执行器的运动一致性和线性.
- 开发一个MRI兼容的微手术仪器,利用RDP.
主要方法:
- 开发了一种新的滚动驱动原理 (RDP),灵感来自机架式机械.
- 实现了带有等腰梯形弹性机制 (ITFM) 的线性棒滑执行器.
- 在高频和低频之间进行实验验证,包括ITFM的设计优化.
主要成果:
- RDP执行器表现出极好的运动一致性 (10 Hz时1.96%的速度差) 和线性 (0.99969).
- 在560Hz时,高线性 (0.99999) 保持在7.54%的速度差比.
- 一个原型的MRI兼容的微手术仪器成功开发和演示.
结论:
- 新的RDP显著提高了stick-slip执行器的运动一致性和线性.
- 该RDP适用于高精度应用,包括手术内MRI手术仪器.
- 开发的执行器技术对先进的微手术工具具有前途.
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