一种新型贴片式十字型旋转压电电机的研究  

Reseach of a Novel Patch Type Cross Rotating Piezoelectric Motor

作　　者：于慧佳 周详宇 YU Huijia;ZHOU Xiangyu(College of Elevator and Intelligent Manufacturing,Chongqing Energy College,Chongqing 402247,China;School of Advanced Manufacturing Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆能源职业学院电梯与智能制造学院,重庆402247 [2]重庆邮电大学先进制造工程学院,重庆400065

出　　处：《微电机》2022年第11期32-35,49,共5页Micromotors

基　　金：国家自然科学基金资助项目(51775076)。

摘　　要：基于V型超声电机的压电换能器组合驱动特性,并以简化电机结构为目的,提出了一种新型的贴片式空心十字型旋转压电电机及其工作原理。其中定子部分由八个半圆压电陶瓷粘接在一个薄的空心十字铜板的上下两侧。定子由两个相位差为90°的正弦电压激励,并在接触点处生成椭圆轨迹用于驱动轴转子。通过将定子两个正交平面内振动模态的复合,对电机的驱动原理进行了说明。利用有限元分析,模拟了各工作模式的振动形态和频率,得到了各接触点的最大位移与电机各主要结构参数之间的关系。制作了样机,并对电机的特性进行了测试。转速、预压和电压之间呈非线性关系。电机空载时的最大转速为22.9 r/min,并且讨论了十字型旋转压电电机的优缺点。In order to simplify the structure of ultrasonic motor, a new patch type cross rotating piezoelectric motor and its working principle were proposed in this paper, based on the driving characteristics of combined piezoelectric transducers of V-type ultrasonic motor. Eight semicircular piezoelectric ceramics were bonded to the upper and lower sides of a thin hollow cross copper plate as the stator part. The stator is excited by two sinusoidal voltages with a phase difference of 90°, and elliptical trajectories are generated at the driving contact points to drive the shaft rotor. The driving principle of the motor was explained by compounding the two orthogonal in-plane vibration modes of the stator. The vibration mode and frequency of each working mode were simulated by finite element analysis, and the relationship between the maximum displacement of each contact point and each of the main structural parameters of motor was obtained. The prototype was made and the characteristics of the motor were measured. There is a nonlinear relationship between speed, preload and voltage. The maximum no-load speed is 22.9 r/min, and the advantages and disadvantages of cross rotating piezoelectric motor were discussed.

关 键 词：压电电机 贴片式 十字型 

分 类 号：TM359.9[电气工程—电机] TM301