Linear ultrasonic piezoelectric actuator

Author

Kawamura, Atsuo ; Takeda, Norihiko

Author_Institution

Dept. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan

Volume

27

Issue

1

fYear

1991

Firstpage

23

Lastpage

26

Abstract

A prototype of the linear ultrasonic piezoelectric actuator (LUPA) with a traveling wave was constructed, and fundamental characteristics were measured. In the prototype, the traveling wave was synthesized by supplying two-phase high-frequency electricity to the piezoelectric elements attached to the copper bar. These results imply that the LUPA has the possibility of higher-thrust power at the low-speed range. The ultrasonic actuator has advantages in its structure, including standstill friction force without excitation, high-thrust force around the low-speed range and free structure. The applications are mainly in the area of robot end effectors where high-thrust force is required at low-speed operation

Keywords

electric actuators; piezoelectric devices; 2-phase HF electricity; Cu bar; LUPA; free structure; high-thrust force; linear ultrasonic piezoelectric actuator; low-speed range; robot end effectors; standstill friction force; traveling wave; Copper; Electromagnetic forces; Energy conversion; Friction; Helium; Piezoelectric actuators; Prototypes; Surface waves; Torque; Ultrasonic variables measurement;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.67527

Filename

67527