Design and experiments of a linear piezoelectric motor driven by a single mode
Design and experiments of a linear piezoelectric motor driven by a single mode
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单模驱动线性压电电机设计与实验
DOI：
10.1063/1.4966251
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发表时间：
2016-11-01
影响因子：
1.6
通讯作者：
Fu, Qianwei
中科院分区：
文献类型：
--
作者：
Liu, Zhen;Yao, Zhiyuan;Fu, Qianwei
在这篇文章中，我们提出了一种新型线性压电电机，其具有由单模式驱动的紧凑定子。线性压电电机可以通过改变定子的振动模式来实现双向运动。进行有限元分析，以确定所需的定子振动模式，并获得最佳的定子结构和尺寸。此外，在考虑和不考虑与滑块的机械接触的情况下分析驱动脚的轨迹。结果表明，忽略接触时驱动脚的轨迹为斜线，考虑接触时驱动脚的轨迹变为斜椭圆。最后，根据有限元分析的结果制造了电机原型。优化结果表明，电机在B模式励磁下达到最大推力4.0 kg，最大推重比为33.3，最大空载速度为385 mm/s，在L模式励磁下最大空载速度为315 mm/s。由 AIP 出版社出版。
In this contribution, we propose a novel linear piezoelectric motor with a compact stator that is driven by a single mode. The linear piezoelectric motor can realize bidirectional motion by changing the vibration modes of the stator. Finite element analysis is performed to determine the required vibration mode of the stator and obtain the optimal stator structure and dimensions. Furthermore, the trajectories of the driving foot are analyzed with and without consideration of the mechanical contact with the slider. It is shown that the trajectory of the driving foot is an oblique line when disregarding the contact, and the trajectory becomes an oblique ellipse while taking into account the contact. Finally, a prototype of the motor is fabricated based on the results of finite element analysis. The optimization results show that the motor reaches its maximum thrust force of 4.0 kg, maximum thrust-weight ratio of 33.3, maximum unloaded velocity of 385 mm/s under the excitation of Mode-B, and maximum unloaded velocity of 315 mm/s under the excitation of Mode-L. Published by AIP Publishing.