Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Characteristics of π-shaped Ultrasonic Motor

  • Lim Kee-Joe (School of Electrical and Computer Engineering, Chungbuk National University) ;
  • Park Seong-Hee (School of Electrical and Computer Engineering, Chungbuk National University) ;
  • Yun Yong-Jin (School of Electrical and Computer Engineering, Chungbuk National University) ;
  • Park Cheol-Hyun (School of Electrical and Computer Engineering, Chungbuk National University) ;
  • Kang Seong-Hwa (Dept. of Fire Prevention Engineering, Chungcheong University) ;
  • Lee Jong-Sub (Dept. of Testing and Research support, Small and medium business administration)
  • Published : 2006.06.01
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Abstract

In this paper, the design and characteristics of a $\pi-shaped$ ultrasonic motor that is applicable to optical zoom operation of a lens system for mobile phones are investigated. Its design and simulation of performances are carried out by FEM (finite element method) commercial software. As a simulation result, by applying voltage with single phase, a combined vibration is produced at the surface of a stator arm. A prototype of the motor is fabricated and its outer size is $8*4*2mm^3$ including the cylindrical steel rod of 2 mm in diameter as the rotor. The motor exhibits a maximum speed of 500 rpm and a power consumption of 0.3 W when driven at 20 Vpp and 64 kHz.

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References

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  1. Analysis of a nanopositioning actuator using numerical and analytic methods vol.17, pp.2, 2008, https://doi.org/10.1088/0964-1726/17/2/025025
  2. Characteristic analysis of a traveling wave ultrasonic motor using an ellipsoidal static contact model vol.18, pp.11, 2009, https://doi.org/10.1088/0964-1726/18/11/115024