Modal analysis and moving performance of a single-mode linear ultrasonic motor.

Abstract:

:A single-mode linear ultrasonic motor was developed in this study. On the stator, a group of four pieces of piezoelectric ceramics PZT8 were utilized to generate the ultrasonic vibration. A specially designed modal conversion horn with an oblique beam was applied to transfer the longitudinal vibration to an additional bending vibration. Modal analysis was conducted by finite element method to illustrate the elliptical vibration process. Then the output performance (e.g. output thrust and output velocity) of the motor was evaluated via a series of experiments. The results show that the simulated amplitudes of longitudinal vibration and bending vibration are 9.6 μm and 3.4 μm, respectively, which match well with the tested results. The output thrust increases with the increase of voltage. The largest output thrust is 10 N at the voltage of 600 Vp-p, and the biggest output velocity is 200 mm/s at the supplied frequency of 19.8 kHz and the driving angle of 45°. The output velocity also decreases with the increase of applied load.

journal_name

Ultrasonics

journal_title

Ultrasonics

authors

Yin Z,Dai C,Cao Z,Li W,Chen Z,Li C

doi

10.1016/j.ultras.2020.106216

subject

Has Abstract

pub_date

2020-12-01 00:00:00

pages

106216

eissn

0041-624X

issn

1874-9968

pii

S0041-624X(20)30155-4

journal_volume

108

pub_type

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