A piezomotor using longitudinal actuators

Author

Petit, Lionel ; Briot, Roland ; Lebrun, Laurent ; Gonnard, Paul

Author_Institution

Inst. Nat. des Sci., Lab. de Genie Electrique et Ferroelectr., Villeurbanne, France

Volume

45

Issue

2

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

277

Lastpage

284

Abstract

A new travelling wave type ultrasonic motor has been developed which uses longitudinal piezoelectric actuators to generate a progressive wave on the surface of a metallic ring. The rotor, which moves through frictional force, is pressed on this elastic plate. This paper deals with the motor construction and its characteristics. Theoretical modelling and experimental performances obtained with the motor prototypes are reported. A maximum of 0.8 Nm and a no-load rotation speed of 120 rpm have been obtained with a double rotor prototype. The results indicate that this piezomotor is proved to operate successfully at a mechanical output power of 4 W.

Keywords

piezoelectric actuators; piezoelectric motors; rotors; ultrasonic motors; 4 W; double rotor motor; elastic plate; frictional force; longitudinal piezoelectric actuator; metallic ring; piezomotor; rotation speed; surface progressive wave; travelling wave ultrasonic motor; Actuators; Ceramics; Electrodes; Piezoelectric polarization; Prototypes; Q factor; Rotors; Stators; Surface waves; Torque;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.660138

Filename

660138