Ultrasonic linear motors for application to driving a light pick-up element

Author

Takano, Takeshi ; Tomikawa, Yoshihiro ; Aoyagi, Masahiro ; Ogasawara, T. ; Yabuki, Akinori

Author_Institution

Dept. of Commun. Eng., Tohoku Inst. of Technol., Sendai

fYear

1993

fDate

31 Oct-3 Nov 1993

Firstpage

445

Abstract

This paper deals with ultrasonic linear motors using a double-mode vibrator and their application to driving a light pick-up element of CD-ROM etc. We have already invented some ultrasonic linear motors. In the first part of this paper, two kinds of the motors using a square plate vibrator are proposed; one construction is the motor using an extensional mode and a bending mode, and the other is using degenerated bending modes of the same form. Their construction and characteristics are shown. The second part contains experimental investigation of the linear motor using a L1-B2 mode rectangular plate. Characteristics of the device of which a light pick-up element is mounted on a linear motor are presented

Keywords

CD-ROMs; linear motors; ultrasonic devices; CD-ROM; L1-B2 mode rectangular plate; bending mode; degenerated bending modes; double-mode vibrator; extensional mode; light pick-up element; square plate vibrator; ultrasonic linear motors; CD-ROMs; Ceramics; Information science; Piezoelectric materials; Read only memory; Research and development; Resonance; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1993. Proceedings., IEEE 1993

Conference_Location

Baltimore, MD

Print_ISBN

0-7803-2012-3

Type

conf

DOI

10.1109/ULTSYM.1993.339537

Filename

339537