title: Ultrasonic micro-motor with multilayer piezoelectric ceramic and chamfered driving tips.
abstract: In this study, an oblate-type ultrasonic micro-motor with multilayer piezoelectric ceramic and chamfered driving tips was proposed and experimentally researched. The micro-motor works based on the standing-wave principle and has a higher rotary speed than the traditional standing-wave one in principle, reaching a rotary speed of 2100 r/min in this study at the voltage of 20 Vp-p. When the micro-motor rotates, single phase alternating current is required, namely, V=Asinωt, and exchanging the signal wire and ground wire will not change the rotary direction of the motor, which reinforces the safety and the compaction of this motor. The ratio of the maximum displacement value of the speed feeding direction and the preload direction is approximately 4, showing a characteristic of high speed and low ability to load.
authors: School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China.
authors: Yanqiang
authors: Y
authors: Zhao
authors: School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China.
authors: Songmei
authors: S
authors: Yuan
authors: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors: Xiangcheng
authors: X
authors: Chu
authors: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors: Shuning
authors: S
authors: Gao
authors: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
authors: Zuojin
authors: Z
authors: Zhong
authors: School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China.
authors: Cong
authors: C
authors: Zhu