Hybrid transducer type ultrasonic motor

Author

Kurosawa, Minoru ; Ueha, Sadayuki

Author_Institution

Res. Lab. of Precision Machinery & Electron., Tokyo Inst. of Technol., Yokohama, Japan

Volume

38

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

89

Lastpage

92

Abstract

A type of ultrasonic motor whose stator is composed of a torsional vibrator and multilayered piezoelectric actuators is proposed and has been fabricated for trial. The stator is operated at the resonance frequency of the torsional vibration. The vibrator generates the mechanical output force and the actuators control the frictional force. The construction provides for arbitrary Lissajous´s figures at the contacting surface and contributes to large mechanical output power with high efficiency and bidirectional motion. It also gives greater freedom of design. The prototype motor produced a maximum torque of 7 kg-cm and a maximum efficiency of 33%.<>

Keywords

electric actuators; piezoelectric motors; ultrasonic transducers; 33 percent; arbitrary Lissajous´s figures; bidirectional motion; high efficiency; hybrid transducer type ultrasonic motor; large mechanical output power; multilayered piezoelectric actuators; prototype motor; resonance frequency; torsional vibrator; Force control; Piezoelectric actuators; Piezoelectric transducers; Power generation; Prototypes; Resonance; Resonant frequency; Stators; Ultrasonic transducers; Vibrations;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.68464

Filename

68464