基于双层压电换能器的次谐波检测新方法

2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics Pub Date : 2007-05-27 DOI:10.1109/ISAF.2007.4393401

M. Fukuda, M. Nishihira, K. Imano

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引用次数: 0

摘要

构建了一种检测超声脉冲次谐波分量的新系统。具有相同极化方向的双层压电换能器(DLPT)[1]用于检测。由两个换能器组成的DLPT(谐振频率为f)，当换能器并联时，谐振频率等于f，当换能器串联时，谐振频率等于f/2。介绍了用于该超声系统的DLPT的性能。实验结果表明，该方法成功地实现了对反射器反射的超声脉冲波的次谐波分量的有效检测。相反，使用传统的系统，如果没有用于DLPT电气连接的电气开关，则无法检测次谐波分量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A New Detection Method for Sub-Harmonic Components Using a Double-Layered Piezoelectric Transducer

A new system for detecting the sub-harmonic component of ultrasonic pulse wave is constructed. Double-layered piezoelectric transducer (DLPT) [1] which has the identical polarization directions is for the detection. The resonance frequency of the DLPT comprised of two transducers (with resonance frequency of f) is equal to f when the transducers are electrically connected in parallel and to f/2 when the transducers are connected in series connection. The performance of the DLPT used in this ultrasonic system is described. As the experimental results, the efficient detection of the sub-harmonic component of the ultrasonic pulse wave reflected by a reflector is successfully accomplished. On contrary, the sub-harmonic component could not be detected by using conventional system without an electrical switch for elctrical connection of the DLPT.

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2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics

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