굴곡 진동모드를 이용한 초음파 선형 압전 액추에이터 개발

Other Titles
Development of ultrasonic linear piezoelectric actuator with flexuralvibration mode
Authors
윤장호최우천강종윤윤석진강진규
Issue Date
2009-11
Publisher
한국센서학회
Citation
센서학회지, v.18, no.6, pp.461 - 466
Abstract
This paper represents a piezoelectric ultrasonic linear actuator with flexural vibration mode. The actuator is composed of two piezo ceramics, the elastic body, and the connecting tip. It is driven by the frictional force between the connecting tip and the linear motion guide. Unimorph actuators have flexural vibration. Its middle point is fixed so that suitable to the flexural vibration of 3/2%. These vibrations contribute to elliptical motion by mixed mode between longitudinal and transverse mode. It was generated when the ultrasonic electrical signals with 90 degree phase difference are applied to two ceramics. A linear movement can be easily obtained using the elliptical motion. The ATILA, FEM simulator has been used to design actuator and verify the kinetic and dynamic analysis. We used the ceramics of 20×10×1 mm size and confirmed the flexural vibration of the 3/2% at the 79 kHz through the scanning of 3D-vibrometer. The maximum velocity of actuator was 221 mm/sec and the thrust force of actuator was 2.7 N in 200Vp-p of additional voltage.
Keywords
linear actuator; flexural vibration; piezoelectric; actuator; ATILA
ISSN
1225-5475
URI
https://pubs.kist.re.kr/handle/201004/131978
Appears in Collections:
KIST Article > 2009
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