In this paper, the structure of a top-face-sway electromagnetic micromotor and its principle, fabrication and performance are introduced. A combination of the electromagnetic actuating and the planetary reducing provides this micromotor an advantage of low rotational speed and high torque. In addition, since a flexible coupling absorbs the sway and only outputs rotation, it gives this micromotor a balanced output. The dimension of the micromotor is 5 mm. Its rotation speed has a range of 20 - 860 rpm, and its driving current is 300 mA. The output torque of the micromotor is measured to be 13.0 ?Nm.
© 2005 Chinese Optics Letters
Jingqiu Liang, Zichun Le, Jinsong Yao, Zhiyong Wu, Hongguang Jia, Yihui Wu, Zhi Jia, Qiongying Lu, Ming Xuan, and Lijun Wang, "A top-face-sway electromagnetic micromotor," Chin. Opt. Lett. 1, 211-213 (2003)