Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2000.05b
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- Pages.53-56
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- 2000
Design and FEA of Langevin Type Ultrasonic Vibrator for Development of Rotary Motor
회전형 초음파모터 개발을 위한 란쥬반형 진동자의 설계 및 유한요소해석
- Park, Min-Ho (Dept. of Electrical Eng. Changwon National Univ) ;
- Kim, Hyeoung-Woo (Dept. of Electrical Eng. Changwon National Univ) ;
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Park, Tae-Gone
(Dept. of Electrical Eng. Changwon National Univ)
;
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Kim, Myong-Ho
(Dept. of Ceramic Eng. Changwon National Univ)
- Published : 2000.05.13
Abstract
Piezoelectric ceramics can provide electro-mechanical transduction with high stresses but low displacement. To obtain larger displacements, several mechanical amplifying structures have been used. High alternating displacements can be obtained using resonant structure. In this paper, we designed a bolt-tightened Langevin type ultrasonic vibrator whose resonant frequency is 50[kHz] and ceramics are multilayered. FEM(Finite Element Methode) was employed to calculate. the resonant frequencies and maximum displacements of designed vibrators. The designed resonant frequency and computer calculated frequencies were coincided. When input voltages were increased, the maximum displacements also rose. As AC voltage was applied, the maximum displacement were shown sinusoidal changes. Terminal input admittance over a frequency range spanning the resonant frequency were calculated. ANSYS was used to find resonant frequencies and calculate displacements of vibrators.