한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2006년도 추계학술대회논문집
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- Pages.484-487
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- 2006
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- 1598-2548(pISSN)
압전 플레이트의 모드 튜닝을 이용한 선형 엑츄에이터 설계
Linear Actuator using Tuned Modes of a Piezoelectric Plate
- 발행 : 2006.11.16
초록
In this paper, linear ultrasonic actuators are designed using two dimensional motions of a PMW-PT piezoelectric plate. By equalizing the natural frequencies of longitudinal and transverse vibration modes in the cantilever structure, the ultrasonic motion of the combined vibration modes are generated. We have designed two different PMN-PT actuators: one uses a tip attached on the edge of the actuator and it drives the object in the perpendicular direction of the tip. In other model, the actuator plate moves itself through stationary guides. Prototypes of the two models are manufactured and experiments results are compared to the theoretical and numerical results. The effects of structural characteristics and the friction force existing between the actuator tip and the moving object are considered. Experiments show the possibility of small size ultrasonic linear motors which can be applicable to small form factor information storage and phone camera actuators.