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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 mechanical and electrical properties of Cymbal transducer were studied. Under simple support boundary conditions, the electromechanical characteristics of Cymbal transducer are analyzed by piezoelectric-elastic theory, Kirchhoff plate vibration theory, Rayleigh-Litz theory and equivalent circuit method. The Cymbal transducer The equivalent circuit and the related parameters of the Cymbal transducer under no load condition and the relationship between the cavity depth of the Cymbal transducer and the radius of the bottom of the cavity and the resonant frequency and electromechanical coupling coefficient relationship. According to numerical analysis, the best electromechanical coupling coefficient is obtained, which provides the theoretical basis for the optimal design of Cymbal transducer.