Improvement of Vibration Distribution Measurement of Piezoelectric Devices Based on Image Processing
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概要
- 論文の詳細を見る
The two-light-source laser speckle system for visualizing the in-plane mode shapes of high-frequency piezoelectric resonators has been improved. On the basis of our previous reports, the measurement range of the vibration displacement was expanded by increasing the order of the polynomial approximation in the optical interference relations. A transformation from the two-dimensional (2D) correlations between two laser-speckle images of the resonator-driving and -resting states to the vibration displacement distributions was also developed. The performance gain of our new method, based on a combination of these two improvements and an optical hardware refinement, is demonstrated through the experimental results.
- The Japan Society of Applied Physicsの論文
- 2009-07-25
著者
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Sekimoto Hitoshi
Graduate School Of Engineering Tokyo Metropolitan University
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Goka Shigeyoshi
Graduate School Of Engineering Tokyo Metropolitan University
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Imaeda Noriyuki
Graduate School Of Science And Engineering Tokyo Metropolitan Univ.
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Sato Takayuki
Graduate School of Engineering, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji, Tokyo 192-0397, Japan
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Watanabe Yasuaki
Graduate School of Engineering, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji, Tokyo 192-0397, Japan
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Tachibana Kentaro
Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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Watanabe Yasuaki
Graduate School of Engineering, Tokyo Metropolitan University,
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