Piezoelectric micromotor based on the structure of serial bending arms

被引：2
|
作者：
Tong, JH [1 ]
Cui, TH
Shao, PG
Wang, LD
机构：
[1] Dalian Univ Technol, MEMS Res Ctr, Dalian 116023, Liaoning, Peoples R China
[2] Louisiana Tech Univ, Inst Micromfg, Ruston, LA 71272 USA
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2003年 / 50卷 / 09期
关键词：
D O I：
10.1109/TUFFC.2003.1235321
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper presents a new piezoelectric micromotor based on the structure of serial bending arms. Serial bending arms are composed of two piezoelectric bimorphs with one end fixed and the other end free, driven by two signals of a biased square wave with a phase difference of pi/2. The free end of a cantilever arm will move along an elliptic orbit so that the cantilever is used to drive a cylinder rotor. The rotor's end surface contacts the free end of the cantilever, resulting in the rotor's rotation. There are six serial bending arms anchored on the base. The driving mechanism of the micromotor is proposed and analyzed. A new micromotor prototype, 5 mm in diameter, has been fabricated and characterized. The maximum rotational speed reaches 325 rpm, and the output torque is about 36.5 muNm.
引用
收藏
页码：1100 / 1104
页数：5
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