Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Characteristics of the Ultrasonic Motors of Single - Phase Driving Type

단상 구동형 초음파 전동기의 특성

  • Kim, J.S. (Dept. of Tech. Ed. Korea Nat'l Univ. of Ed.) ;
  • Kim, Y.H. (Dept. of Elec., Kyungwon Jr. Col.) ;
  • Lee, N.H. (Dept. of Electronic Eng., Kyungwon Univ.) ;
  • Kim, H.G. (Dept. of Mal Sci & Eng., KAIST) ;
  • Lee, D.C. (Dept. of Electrical Eng., Inha Univ.)
  • Published : 1997.11.29
Download PDF
⟨ Previous Next ⟩

Abstract

Ultrasonic motors using piezoelectric ceramics and brass metal endcaps were fabricated, which is operated by single - phase high frequency. The structure of the ultrasonic motors has the wind-mill type. The stator part consists of a piezoelectric disk and two metal endcaps slotted wind-mill type. According to the piezoceramic disk vibrates as a radial mode, two metal endcaps provide both longitudinal and torsional displacements simultaneously. Because the metal endcaps have a nonsymmetric structure. the principle of the ultrasonic motor is not well understood. The dimension of the ultrasonic motor is diameter in 12.7 mm and thickness in 2.0 mm, and especially the PMN-PT-PZ piezoelectric disk was used. The maximum revolution speed 700 rpm and the maximum torque 0.22 mN.m were obtained. The ultrasonic motor for rotation was Supplied only single phase AC.

Keywords