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http://dx.doi.org/10.5370/JEET.2006.1.2.241

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)
Publication Information
Journal of Electrical Engineering and Technology / v.1, no.2, 2006 , pp. 241-245 More about this Journal
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.
Keywords
Auto-focusing; Miniaturized motor; Optical zooming; $\pi-shaped$ USM;
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  • Reference
1 Yoshiaka Hata and Yasuhiro Okamoto, 'Linear Actuator', US Patent, Pub. No. US 200310222538, pp. 1 - 12,2003
2 Koc Burhanettin, Aydin Dogan, Yuan Xu, Robert E. Newnham, and Kenji Uchino, 'An Ultrasonic Motor Using a Metal-Ceramic Composite Actuator Generating Torsional Displacement', Jpn. J. Appl. Phys., Vol. 37, No. 10,5659-5662, 1998   DOI
3 Kentaro Nakamura, Jacques Margairaz, Takaaki Ishii, and Sadayuki Ueha, 'Ultrasonic Stepping Motor Using Spatially Shifted Standing Vibrations', IEEE Trans. On UFFC, Vol. 44, No. 4, pp. 823 - 827, 1997   DOI   ScienceOn
4 Faa-Jeng Lin, 'Fuzzy Adaptive Model-Following Position Control for Ultrasonic Motor', IEEE Trans. On Power Electronics, Vol. 12, No. 2, pp. 261-268, 1997   DOI   ScienceOn
5 Toshiiku Sashida, Takashi Kenjo, 'An Introduction to Ultrasonic Motor', CLARENDON PRESS, pp. 92-93, 1993
6 K.J. Lim, O.D. Kwon, C.H. Park, J.S. Lee, and S.H. Kang, 'The Design and Characteristics of a Novel Ultrasonic Motor', Proc. On Materials 2005, Aveiro, Portugal (2005), pp. 125
7 H. Hata, JJAP, 35, 5023 (1996)