夹层压电换能器的参数优化

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI:10.1109/SPAWDA.2016.7829947

Jie Xu, Yang Dou, Shu-Yu Lin

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引用次数: 0

摘要

基于机电等效电路方法，在考虑机械损耗和介质损耗的情况下，得到了输入电阻抗方程和电声效率方程。对对称和非对称结构的夹层压电换能器进行了分析。对有效机电耦合系数、机械品质因子和电声效率等特征参数进行了优化。测量了谐振/反谐振频率，计算了有效机电耦合系数。实验结果与分析结果吻合较好。

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Parameters optimization of the sandwich piezoelectric transducer

Based on the electromechanical equivalent circuit method, with the consideration of mechanical loss and dielectric loss, input electrical impedance equation and electroacoustic efficiency equation are obtained. Sandwich piezoelectric transducers of both symmetrical and asymmetrical structure are analyzed. Characteristic parameters of effective electromechanical coupling coefficient, mechanical quality factor and electroacoustic efficiency are optimized. Resonance/anti-resonance frequency is measured and effective electromechanical coupling coefficient is calculated. It is found that the experimental results are in good agreement with the analytical results.

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来源期刊

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)

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