压电管堆式宽带换能器  

A piezoelectric ceramics cylindrical stack broadband transducer

作　　者：尹义龙[1,2] 莫喜平 张运强[1,2] 崔斌[1,2] YIN Yilong;MO Xiping;ZHANG Yunqiang;CUI Bin(Institute of Acoustic,China Academy of Sciences,Beijing 100190,China;Beijing Engineering Technology Research Center of Ocean Acoustic Equipment,Beijing 100190,China)

机构地区：[1]中国科学院声学研究所,北京100190 [2]北京海洋声学装备工程技术研究中心,北京100190

出　　处：《应用声学》2022年第6期990-997,共8页Journal of Applied Acoustics

基　　金：国家自然科学基金青年科学基金项目(11804367)。

摘　　要：研究了一种具有管状叠堆结构的圆管换能器,其敏感元件是由纵向极化压电陶瓷单元组成的薄壁管状压电叠堆,探讨利用管状叠堆纵向和径向振动耦合实现宽带发射。利用压电柱壳振动理论推导了管堆的频率方程,分析了换能器的纵向和径向模态的振动耦合特性。在理论分析的基础上利用有限元方法对换能器的带宽和发射电压响应进行优化并研制换能器样机。测试结果表明,纵向极化的管状压电叠堆结构具有良好的发射电压响应和宽带特性,与理论及仿真结果相符。Transducer with piezoelectric cylindrical stack structure is presented as a broadband projector.The cylindrical stack is composed of several axially polarized piezoelectric ceramic rings.Vibration frequency equations of the stack are derived with the theory of piezoelectric cylindrical shell,and the coupled vibration of the axial and radial mode are analyzed.Using finite element method,bandwidth and sensitivity of the transducer are predicted and optimized.Then a prototype is developed and tested.Test results show that the transducer with cylindrical stack structure has high sensitivity performance over a broad frequency band as expected.

关 键 词：圆管换能器 宽带 压电叠堆 径长耦合振动 

分 类 号：TB565.1[交通运输工程—水声工程]