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Development of precision Moving Mechanism using Ellipsoidal Motion of piezoelectric Bimorph  

박한길 (KAIST 대학원 기계공학과 MSD 실험실)
김준형 (KAIST 대학원 기계공학과 MSD 실험실)
김수현 (KAIST 대학원 기계공학과)
곽윤근 (KAIST 대학원 기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.4, 2003 , pp. 151-157 More about this Journal
Abstract
A new type of precision actuator is developed using piezoelectric bimorphs. This type of actuator is applicable for the flat surface or in-pipe system and can make forward and backward motion. Two bimorphs are linked serially and two different phased voltages are applied to each bimorph. Therefore, The end of the bimorph makes ellipsoidal motion. The device moves by the friction force between the rubber attached at the bimorph end and the inner surface of the pipe. As the results, the driving range of the device is about 0~18Hz and the device guarantees very high linearity at low frequency, 0~1 Hz. The maximum velocity of the device is about 6mm/s at 10Hz. The developed mechanism is very simple and use piezoelectric bimorph. So, it is possible to miniaturize and educe the power consumption.
Keywords
Piezoelectric Bimorph; Actuator; Ellipsoidal motion;
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Times Cited By KSCI : 1  (Citation Analysis)
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