基于面内振动的内嵌式环形超声电机结构设计

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (10) : 127-139.

振动理论与交叉研究

基于面内振动的内嵌式环形超声电机结构设计

李争*，高帅，高世豪，孙鹤旭

作者信息 +

Structure design of an embedded annular ultrasonic motor based on in-plane vibration characteristics

LI Zheng*，GAO Shuai，GAO Shihao，SUN Hexu

Author information +

文章历史 +

摘要

夹心式结构超声电机相比于贴片式超声电机有着振动特性好、结构紧凑、环境适应性强、疲劳寿命高等优点，越来越受到超声电机设计的关注。为了充分利用夹心式结构的振动特性，提出了一种基于面内振动的内嵌式环形超声电机。该超声电机通过环形定子上产生的行波，定子内、外驱动齿可以双面驱动所设计的柔性转子，柔性转子可实现定、转子间的预压力补偿，更加贴合定子，使定、转子间接触方式变为柱面接触；改变输入两相电压信号的相位可实现电机转向，同时该超声电机通过改变固定方式可实现两种不同的输出方式。首先介绍了该超声电机的整体结构，工作原理，结构尺寸设计；之后分析了定子各结构参数对特征频率的影响，实现了定子工作频段内的干扰模态分离，对环形定子整体进行了仿真分析，包括模态分析、谐响应分析以及振动特性分析；最后通过实验验证了所提出超声电机环形定子设计的可行性和工作原理的正确性。

Abstract

Compared with the chip type ultrasonic motor, the sandwich type ultrasonic motor has the advantages of good vibration characteristics, compact structure, strong environmental adaptability and high fatigue life, so it has been paid more and more attention in the design of ultrasonic motor. In order to make full use of the vibration characteristics of sandwich structure, an embedded annular ultrasonic motor based on in-plane vibration is proposed in this paper. By using the traveling wave generated on the ring stator, the inner and outer driving teeth of the stator can drive the designed flexible rotor on both sides. The flexible rotor can realize the pre-pressure compensation between the stator and the rotor and better fit the stator, so that the contact mode between the stator and the rotor can be changed into cylindrical contact. Changing the phase of the input two-phase voltage signal can realize the motor steering, and the ultrasonic motor can realize two different output modes by changing the fixed mode. In this paper, the overall structure, working principle and structure size design of the ultrasonic motor are introduced. After analyzing the influence of the stator structural parameters on the characteristic frequency, the interference mode separation is realized in the stator operating frequency band, and the simulation analysis of the ring stator is carried out, including the mode analysis, harmonic response analysis and vibration characteristic analysis. Finally, the feasibility and working principle of the proposed ultrasonic motor ring stator are verified by experiments.

导出引用

李争, 高帅, 高世豪, 孙鹤旭. 基于面内振动的内嵌式环形超声电机结构设计[J]. 振动与冲击, 2025, 44(10): 127-139

LI Zheng, GAO Shuai, GAO Shihao, SUN Hexu. Structure design of an embedded annular ultrasonic motor based on in-plane vibration characteristics[J]. Journal of Vibration and Shock, 2025, 44(10): 127-139

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