A 1.6-mm, metal tube ultrasonic motor

Author

Cagatay, Serrn ; Koc, Burhanettin ; Uchino, Kenji

Author_Institution

Int. Center for Actuators & Transducers, Mater. Res. Inst., Pennsylvania State Univ., University Park, PA, USA

Volume

50

Issue

7

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

782

Lastpage

786

Abstract

A miniaturized metal tube ultrasonic motor, the dimensions of which are 1.6 mm in diameter and 6 mm in length, was developed. Two flattened surfaces with 90 degrees were ground on the outer surface of the stator. Two PZT-based piezoelectric ceramics were bonded onto these flat surfaces. The asymmetrical surface of the stator developed the split of the two degenerated orthogonal bending modes, resulting in a wobble motion. The working frequency of the 1.6-mm motor with 6 mm in length was 130 kHz. A torque of 0.5 mNm was reached at a maximum power of 45 mW with a speed of 45 rad/sec. The maximum efficiency was 16%.

Keywords

lead compounds; piezoceramics; stators; ultrasonic motors; 1.6 mm; 130 kHz; 16 percent; 45 mW; 6 mm; PZT; PZT-based piezoelectric ceramics; PbZrO3TiO3; asymmetrical surface; degenerated orthogonal bending modes; flattened surfaces; metal tube ultrasonic motor; stator; wobble motion; working frequency; Bonding; Ceramics; Engine cylinders; Frequency; Interference; Medical services; Robotics and automation; Stators; Tires; Torque;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2003.1214498

Filename

1214498