Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2003.05c
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- Pages.223-227
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- 2003
A Study of Ultrasonic Rotary Motor Using the Langevin Type Vibrator
란쥬반형 진동자를 이용한 초음파 회전 모터에 관한 연구
- Lee, Jae-Hyung (Changwon National University) ;
- Park, Tae-Gone (Changwon National University) ;
- Kwon, Oh-Young (Gloria Techniques Co. Ltd)
- Published : 2003.05.16
Abstract
In this study, ultrasonic rotary motors using a bolted langevin type ultrasonic vibrator were designed and fabricated. The stator vibrator has a longitudinal transducer section composed of two metal blocks and two piezoelectric ceramic elements (thickness-polarized) and a mode conversion metal block section called a torsion coupler. And, three kinds of motors were studied by finite element analysis and experiments. So, as material of torsion coupler which generate mode conversion of vibration copper, brass, and phosphor bronze were used. As a result, speed and torque were changed in proportion to the electrical input Voltage, but it was saturated in high voltage. And bad efficiency which was different from a expectation was measured in this motors. So, various problems should be improved for practical use. Finally, The motor which has 1 [cm] diameter was fabricated to present a possibility of miniaturization of this type motors.
Keywords
- Ultrasonic rotary motor;
- Bolted langevin type ultrasonic vibrator;
- Finite element analysis;
- Torsion coupler;
- Mode conversion