Cymbal换能器的力电性能  

Mechanical and electrical characteristics of cymbal transducer

作　　者：王光灿[1] 田文杰[1] 林国广[2] 栾桂冬[3] 张福学[1] 

机构地区：[1]北京信息工程学院传感器技术研究中心,北京100101 [2]云南大学,昆明650091 [3]北京大学信息科学技术学院,北京100871

出　　处：《声学学报》2005年第3期279-288,共10页Acta Acustica

摘　　要：研究了Cymbal换能器的力电性能。在简单支承边界条件下,应用压电-弹性理论、克希霍夫薄板振动理论、瑞利-李兹理论和等效电路方法分析了Cymbal换能器的机电特性,给出了Cymbal换能器的近似解和串联共振频率方程,研究了Cymbal换能器在无负载条件下的等效电路及相关参数和Cymbal换能器空腔深度与空腔底部半径的比与谐振频率和机电耦合系数的关系。根据数值分析结果得到最佳机电耦合系数,为Cymbal换能器的优化设计提供了理论依据。The electromechanical of Cymbal transducer has been researched. Under simple supporting situation, the mechanical and electrical characteristics have been analyzed with Piezoelectric-elastic theory, Kirchhoff's thin shell vibration theory, Rayleigh-Ritz's theory and equivalent circuit method. The approximately solution and series resonance frequency equation have been given. Under no load, equivalent circuit, correlation parameters of Cymbal transducer and the relations between the ratio of cavity depth to radius of Cymbal transducer with resonance frequency, electromechanical coupling coefficient of Cymbal transducer have been researched. According to results of numerical analysis, the best electromechanical coupling coefficient of Cymbal transducer has been gained. It offers a valid theoretical foundation for optimum design of Cymbal transducer.

关 键 词：CYMBAL换能器 力电性能 等效电路 近似解 串联共振频率方程 

分 类 号：TB565.1[交通运输工程—水声工程]