Design and Experiments of Flexible Ultrasonic Motor Using a Coil Spring Slider

Ayato Kanada, Tomoaki Mashimo

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)


This article proposes a flexible ultrasonic motor that consists of a single metal cube stator with a hole and an elastic elongated coil spring inserted into the hole. When voltages are applied to piezoelectric plates on the stator, the coil spring moves back and forward as a linear slider. The use of the coil spring brings flexibility for the motor and enables a long stroke to access to deeper sites. Furthermore, the coil spring provides an appropriate prepressure between the stator and the coil spring to enhance the motor output. We formulate the relation between the coil spring parameters and the prepressure to clarify the design methodology of the flexible ultrasonic motor. We model the linear motion of the coil spring by an equation of motion and compare it with the transient response by experiments. The flexible ultrasonic motor prototype achieved a translation at a speed of 120 mm/s and demonstrated a force of 0.45 N, and a stable motion even when the coil spring is being bent.

ジャーナルIEEE/ASME Transactions on Mechatronics
出版ステータス出版済み - 2月 2020

!!!All Science Journal Classification (ASJC) codes

  • 制御およびシステム工学
  • コンピュータ サイエンスの応用
  • 電子工学および電気工学


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