Identification of non-axisymmetric ultrasonic standing wave field using laser Doppler vibrometer

被引：0
|
作者：
Dong H.-J. [1 ]
Yu Z. [1 ]
Fan J.-Z. [1 ]
机构：
[1] State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin
来源：
Fan, Ji-Zhuang (fanjizhuang@hit.edu.cn) | 2018年 / Editorial Board of Jilin University卷 / 48期
关键词：
Acoustic field identification; Filtered back projection (FBP) algorithm; LDV velocity output; Radon transform; Resonance cavity; Technology of automatic control; Ultrasonic standing wave;
D O I：
10.13229/j.cnki.jdxbgxb20170359
中图分类号：
学科分类号：
摘要：
Measuring the acoustic pressure of standing wave is the basis of acoustic levitation. The non-axisymmetric acoustic field within the resonance cavity is analyzed. Firstly, the acoustic pressure distribution on the typical cross-section of the acoustic field in the third levitation mode is obtained by COMSOL simulation. The simulated acoustic pressure is Radon transformed to obtain the simulated LDV velocity output, which is compared with the experiment results to verify the relationship between LDV velocity output and acoustic pressure distribution. Then, based on Filer Back Projection (FBP) algorithm, a self-written MATLAB code is used to reconstruct the LDV velocity output in the experiment and obtain the acoustic pressure distribution of the cross-section, which is compared with the COMSOL simulation results. The identification effect of the non-axisymmetric standing wave acoustic filed is verified. © 2018, Editorial Board of Jilin University. All right reserved.
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页码：1191 / 1198
页数：7
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