Novel piezoelectric rotary motor driven by a single-phase sine wave with an asymmetric stator

Qiaosheng Pan; Jinsheng Hu; Enming Miao; Suxin Chen; Shuangbao Shu; Penghao Hu; Bin Huang

doi:10.1063/1.5094798

Novel piezoelectric rotary motor driven by a single-phase sine wave with an asymmetric stator

Rev Sci Instrum. 2019 Jul;90(7):075006. doi: 10.1063/1.5094798.

Authors

Qiaosheng Pan¹, Jinsheng Hu¹, Enming Miao¹, Suxin Chen², Shuangbao Shu¹, Penghao Hu¹, Bin Huang¹

Affiliations

¹ School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei, Anhui 230009, China.
² School of Mechanical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China.

PMID: 31370506
DOI: 10.1063/1.5094798

Abstract

This study demonstrates a new approach for constructing a rotary piezoelectric motor that utilizes an asymmetric stator driven by a single-phase signal. An asymmetric stator with four driving feet is proposed on the basis of the idea of generating asymmetric action on the rotor. This new motor consists of one piezoelectric transducer with two anchors and four driving feet placed in a parallelogram and internally connected to a circular rotor. The four feet vibrate asymmetrically to push the rotor into motion in one direction when a preload is applied. The proposed motor is designed, analyzed, and tested by using a finite element method (FEM). The vibration and impedance characteristics of the stator are measured after fabricating a prototype, and the test results are consistent with the FEM analysis results. The typical output of the prototype is a no-load speed of 176.5 rpm and a maximum torque of 29.4 N mm at an excitation voltage of 274 V_p-p.