Measurement of LiNbO3 Rectangular Plate Under Large Vibration Velocity of the First Longitudinal and Second Flexural Modes
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概要
- 論文の詳細を見る
We have studied a miniature ultrasonic motor using a piezoelectric single-crystal LiNbO3. The crystal vibrator retains superior characteristics even when the vibrational velocity is large. On the other hand, a vibrator using a resonance mode shows no signs of an operating limit and fractures itself when the vibrational velocity exceeds the limit. Such behavior causes a problem in controlling the achievement of a large output power from the motor. Therefore we must investigate the vibrational characteristics at a high vibration level and at the fracture limit. In this study, the samples were examined for their vibrational characteristics at a high driving level and at the fracture limit. First, the characteristics of the resonance vibration of the first longitudinal and second flexural modes in an $X$128°-rotated $Y$-cut rectangular plate were measured. Second, to evaluate the difference caused by the cut angle of the $X$-rotation, the characteristics for the first longitudinal mode of $X$128°-, $X$135°-, $X$140°- and $X$155°-rotated $Y$-plates were measured; additionally, for each rotation-angle plate, we measured the characteristics of the rectangular plates whose longer side was directed along the $x$- or $z^{\prime}$-axis. In this paper, we describe the experimental results for the high-power characteristics and the fracture limits.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-05-25
著者
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TOMIKAWA Yoshiro
Graduate Program of Human Sensing and Functional Sensor Engineering Yamagata University
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TAKANO Takehiro
Information and Communication Engineering, Tohoku Institute of Technology
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Tamura Hideki
Graduate Program Of Human Sensing And Functional Sensor Engineering Yamagata University
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Hirose Seiji
Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
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Aoyagi Manabu
Muroran Inst. of Tech.
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Aoyagi Manabu
Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
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Iwase Masashi
Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
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Takano Takehiro
Information and Communication Engineering, Tohoku Institute of Technology, 35-1 Kasumi-cho, Sendai 982-8577, Japan
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