JRM Vol.24 No.3 pp. 480-486
doi: 10.20965/jrm.2012.p0480


Design and Evaluation of Electromagnetic Wobble Motor

Masaki Miyake*, Koichi Suzumori*, and Kazuo Uzuka**

*Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan

**TOK Bearing Co. Ltd., 21-4, 2-chome, Azusawa, Itabashi-ku, Tokyo, Japan

October 14, 2011
April 17, 2012
June 20, 2012
wobble motor, stepping motor, electromagnetic actuator

The purpose of this work is to develop a thin, electromagnetic wobble motor with a large amount of torque, a motor thinner than conventional ones and able to be applied to portable electric equipment. We have developed a basic model of the motor 30 mm in diameter and 5 mm in thickness. In this paper, the basic structure and control method are first presented. Next, the design of the electromagnets and the three types of gear pairs, which have different pressure angles for the reduction mechanism, are presented. Finally, the motor drive experiments are performed using two types of drive: one is a two-phase drive, and the other is a four-phase drive. Three types of gear pairs are also shown. The motor works successfully, and its great potential to be mounted in thin, portable equipments is confirmed.

Cite this article as:
Masaki Miyake, Koichi Suzumori, and Kazuo Uzuka, “Design and Evaluation of Electromagnetic Wobble Motor,” J. Robot. Mechatron., Vol.24, No.3, pp. 480-486, 2012.
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Last updated on Feb. 25, 2021