Bidirectional linear inertial impact piezoelectric motor with multimodal resonance

Author:

He Liangguo1ORCID,Li Kun1,Yan Yi1,Cheng Ziyang1ORCID,Xu Lei1,Li Xinyu1,Ge Xinfang1,Shan Zengxiang1,Dou Haotian1

Affiliation:

1. School of Mechanical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China

Abstract

A new multimodal bidirectional linear inertial impact motor with bidirectional motion based on self-clamping control driven by a single-harmonic signal was designed and manufactured. By applying driving signals of different resonant frequencies to the piezoelectric plate of a piezoelectric motor combined with the unique structural design of the motor, the piezoelectric motor has multiple modes and has the ability of two-way movement. First, the overall structure of the motor is introduced, and its working principle and theoretical displacement characteristics are presented through the periodic motion diagram of the piezoelectric motor. Second, the simulation analysis is carried out to determine the working modal of the proposed motor with COMSOL5.2. Finally, a motor prototype is developed, and the accuracy of the working principle and the simulation analysis is verified through experimental tests. When the motor has no load, the driving voltage is 200 Vp–p. The maximum speed when moving to the right reached 3.125 mm/s when the preload is 2 N, and the driving frequency is 96 Hz. The maximum speed when moving to the left reached 4.301 mm/s when the preload is 4 N, and the driving frequency is 148 Hz. In the load capacity test of the motor prototype, the maximum load of the piezoelectric motor prototype moving to the right and left can reach 0.4 and 0.6 N, respectively. Compared with similar inertial impact motors, the proposed motor achieves flexible control of driving and switching of two-way movement conveniently and has a certain driving ability.

Funder

Natural Science Foundation of Anhui Province

National Natural Science Fund of China

China Postdoctoral Science Foundation

Publisher

AIP Publishing

Subject

Instrumentation

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