A Micro Piezoelectric Motor with a Disk-Pivot Structure

Article Preview

Abstract:

A micro piezoelectric motor with a disk-pivot structure is presented. Different from conventional wobble-type piezoelectric motor using piezoelectric rod or cylinder, piezoelectric disc is used to excite wobble modes and metal cylinder stator is used to amplify the transverse displacement, metal rod rotor is actuated to rotate. The outer diameter of the actuator is 14mm. In this paper, the performances of the motor are characterized, where a high rotation speed and a high toque are obtained. The property of start-up period movement of the motor was studied by a high-speed camera. The toque of the motor was calculated by the property of the start-up movement.

You might also be interested in these eBooks

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

202-203

Citation:

Online since:

February 2008

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2008 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] S. Ueha, Y. Tomikawa, M. Kurosawa and N. Nakamura: Ultrasonic Motors Theory and Applications (Clarendon Press, Oxford 1993).

Google Scholar

[2] R. Carotenuto, N. Lamberti, A. Iula and M. Pappalardo: IEEE Trans. Ultrason., Ferroelect., Freq. Contr. Vol 45, No. 5 (1998), p.1427.

DOI: 10.1109/58.726471

Google Scholar

[3] F.L. Wen, C.Y. Yen and M.S. Ouyang: Ultrasonics Vol 41 (2003), p.437.

Google Scholar

[4] P.A. Juang and H.J. Hardtke: Sensor. Actuat. A-Phys. Vol 94 (2001), p.102.

Google Scholar

[5] L. Ma, X.C. Chu, L.T. Li and S.M. Yuan: Key Eng. Mat. Vols. 336-338 (2007) pp.345-347 Fig. 3. The impedance versus the stimulating frequency. Fig. 4. The rotation speed in the start-up process.

Google Scholar