夹心式复合变幅杆换能器频率方程的推导

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (7) : 188-191.

论文

夹心式复合变幅杆换能器频率方程的推导

秦雷1,2; 王丽坤2; 唐会彦2; 孙百生2

作者信息 +

Derivation the Frequency Equation of Sandwich Transducer With Complex Transformer

QIN Lei1,2; WANG li-kun1; TANG hui-yan1; SUN Bai-sheng1

Author information +

文章历史 +

摘要

应用复合变幅杆及夹心式换能器结构，研制了一种新型夹心式发射换能器。根据等效电路理论推导了这种夹心式复合变幅杆换能器的等效电路模型，得出了换能器频率方程。考虑黄铜电极片对压电振子的密度及等效纵波声速的影响，应用等效参数理论修正了频率方程。通过实验验证，误差由修正前的2.09%降低到修正后的0.64%。

Abstract

A kind of middle-frequency transducer with great direction is proposed and designed. It is a sandwich transducer with complex transformer. Base on the electro-mechanical equivalent circuit theory, the model of sandwich transducer has been build, and the frequency equation is deduced. Considering the influence of the latten electrodes on the density and the equivalent sound velocity, a modification of this equation is given out using the equivalent parameter theory. Transducers are prepared to validate this modification, the error between the calculation and the experimental results reduces from 2.09% (before modification) to 0.64% (after modification).

导出引用

秦雷;王丽坤; 唐会彦;孙百生. 夹心式复合变幅杆换能器频率方程的推导[J]. 振动与冲击, 2011, 30(7): 188-191

QIN Lei; WANG li-kun; TANG hui-yan;SUN Bai-sheng. Derivation the Frequency Equation of Sandwich Transducer With Complex Transformer[J]. Journal of Vibration and Shock, 2011, 30(7): 188-191