A small size ultrasonic motor

Author

Kawasaki, O. ; Nishikura, T. ; Sumihara, M. ; Ohtsuchi, T. ; Takeda, K. ; Nojima, T. ; Imada, K.

Author_Institution

Device Process Technol. Res. Lab., Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

fYear

1993

fDate

17-20 Oct 1993

Firstpage

435

Abstract

A small size ultrasonic motor has been developed which exploits the traveling waves produced by bending vibration. The motor is composed of a vibrating disk stator and a disk rotor in physical contact with the stator. There are three circumferential waves in the stator. The outside diameter of the motor is 10 mm, and the height is 8 mm. The total weight is only 3.5 g. The prototype motor produced a starting torque of 25 gf-cm, a no-load rotational speed of 1200 r.p.m. and a maximum efficiency of about 20%

Keywords

bending; rotors; small electric machines; stators; torque; ultrasonic motors; vibrations; 10 mm; 20 percent; 3.5 g; 8 mm; bending vibration; circumferential waves; disk rotor; maximum efficiency; no-load rotational speed; small size ultrasonic motor; starting torque; traveling waves; vibrating disk stator; Actuators; Bidirectional control; Bonding; Laboratories; Power generation; Prototypes; Rotors; Stators; Torque; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Man and Cybernetics, 1993. 'Systems Engineering in the Service of Humans', Conference Proceedings., International Conference on

Conference_Location

Le Touquet

Print_ISBN

0-7803-0911-1

Type

conf

DOI

10.1109/ICSMC.1993.384782

Filename

384782