The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Optimal Design of Thin Type Ultrasonic Motor and Development of Driver

박형 초음파 모터의 최적설계 및 구동 드라이버 개발

  • Published : 2009.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposed optimal design and microcontroller driver for driving the thin-type ultrasonic motor. To find the optimal size of the stator, motions of the motor were simulated using ATILA by changing length, width and thickness of the ceramics. Two sinusoidal waves which have 90 degree phase difference were needed for driving the thin-type motor. The thin-type ultrasonic motor driver was composed of microcontroller(Atmega128), push-pull inverter, encoder and AD-converter. Microcontroller generates four square waves which have variable frequency and 25[%] duty ratio in $20{\sim}150$[kHz]. The output signals of microcontroller were converted to sine wave and cosine wave by push-pull inverter and were applied to the thin-type ultrasonic motor. The encoder and AD-converter were used for maintaining speed of the thin-type ultrasonic motor. The AD-converter controlled DC voltage of inverter in accordance with output signal of encoder. Using the driver, characteristics of the motor as speed and torque were measured.

Keywords

References

  1. Osamu Miyazawa Yasuharu Hashimoto, Tsukasa Funasaka and Makoto Furuhata, 'Investigation of Ultrasonic Motors Using Thin Piezo-Ceramics and a Metal Composite-Plate for Watches', Jpn. J Appl. Phys., Vol.38, pp.5608-5611, 1999 https://doi.org/10.1143/JJAP.38.5608
  2. J. Baborowski, 'Microfabrication of Piezoelectric MEMS', Journal of Electroceramics, Vol. 12, pp.33-51, 2004 https://doi.org/10.1023/B:JECR.0000034000.11787.90
  3. 박태곤, 김명호, '압전세라믹 리니어 모타의 동작원리와 응용', 전기전자재료학회지, 14권, 4호, p. 8, 2001
  4. Toshiku Sashida and Takashi Kenjo, 'An introduction to ultrasonic motors', Oxford, pp. 17-23, 1993
  5. ニコーケラスシリズ편집위원회, '壓電セラミクスの應用', 學獻社, pp.38-40
  6. 손창현, '유한요소해석 입문과 선형해석', 태성에스엔이, pp.31-35, 1999
  7. H. H. Chong, T. G. Park, M. H. Kim, 'A study on driving characteristics of the cross thpe ultrasonic rotary motor', Journal of Electroceramics, Vol. 17, pp. 561 -564, 2006 https://doi.org/10.1007/s10832-006-5414-5
  8. Seong Jeong, Hoik Jun, Hyonho Chong and Taegone Park, 'A Push-Pull Drving of the Thin-Type Ultrasonic Motor Using Microcontroller', 5th IWPMA, Drive/Control, 2008
  9. Kenji Uchino, 'Piezoelectric Actuators and ultrasonic mortors', Kluwer Academic Publishers, pp.129-138, 1997
  10. 김진수 외, '초음파 전동기의 이론과 응용', 성안당, pp.167-181, 2000
  11. Hyueoung woo Kim, Shuxiang Dong, Pitak Laoratanakul, Kenji Uchino and Tae gone Park, 'Novel Method for Driving the Ultrasonic Motor', IEEE, Vol. 49, No 10, pp.1356-1362, 2002 https://doi.org/10.1109/TUFFC.2002.1041077