Analysis of a linear piezoelectric motor driven by a single-phase signal

Author

Shine-Tzong Ho ; Yan-Jhang Shin

Author_Institution

Dept. of Mech. Eng., Kaohsiung Univ. of Appl. Sci., Kaohsiung, Taiwan

fYear

2013

fDate

21-25 July 2013

Firstpage

481

Lastpage

484

Abstract

A new linear piezoelectric motor is presented called the semi-elliptical ultrasonic motor. The composite structure of the stator is formed by two multilayer piezoelectric actuators clamped in an elastic body. The linear ultrasonic motor using normal vibration and tangential vibration modes of a semi-elliptical shape stator was fabricated and studied in this research. The geometric design of the stator has been computed with the help of the finite element analysis. In dynamic analysis, the semi-elliptical stator is analyzed by the impedance analysis method. Then, the equivalent circuit model is established to describe the relations between the system parameters and the dynamic characteristics of the motor. Based on the model, it can be explained theoretically why the piezoelectric motor can be driven by a single phase signal.

Keywords

equivalent circuits; finite element analysis; linear motors; piezoelectric actuators; stators; ultrasonic motors; composite structure; elastic body; equivalent circuit; finite element analysis; impedance analysis; linear piezoelectric motor; multilayer piezoelectric actuators; normal vibration mode; semielliptical shape stator; semielliptical ultrasonic motor; single phase signal; tangential vibration mode; Acoustics; Impedance; Integrated circuit modeling; Mathematical model; Piezoelectric actuators; Stators; Vibrations; dynamic analysis; impedance analysis method; semi-elliptical stator; ultrasonic motor;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2013 IEEE International

Conference_Location

Prague

ISSN

1948-5719

Print_ISBN

978-1-4673-5684-8

Type

conf

DOI

10.1109/ULTSYM.2013.0125

Filename

6725089