| 周瑜,涂其捷,杨荣耀,唐建生.压电水声换能器宽带匹配特性研究[J].声学技术,2018,37(3):286~291 |
| 压电水声换能器宽带匹配特性研究 |
| Research on broadband matching performance of piezoelectric underwater acoustic transducer |
| 投稿时间：2016-12-20 修订日期：2017-03-20 |
| DOI：10.16300/j.cnki.1000-3630.2018.03.017 |
| 中文关键词: 宽带匹配 多物理场 压电水声换能器 |
| 英文关键词: broadband matching multi-physics piezoelectric underwater acoustic transducer |
| 基金项目:水声对抗技术重点实验室基金支持 |
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| 中文摘要: |
| 采用等效电路变换和多物理场有限元仿真计算进行压电水声换能器宽带匹配特性研究，得出不同匹配电路下的换能器电声性能的变化规律，合理选择电感电容值和串并联方式进行调谐匹配实现双峰谐振，一方面提高换能器的工作带宽，另一方面提高工作频率范围内的发送电压响应值并减小工作频带内响应值的起伏，依照仿真数据设计制作了一款球形换能器，采用串联电感进行调谐匹配，并测试调谐匹配前后的水中电声性能，对比匹配前后换能器性能的差异。结果表明，测试结果和仿真计算吻合，运用多物理场仿真计算手段对于预测分析水声换能器电声性能具有较好的指导意义。 |
| 英文摘要: |
| In this paper the equivalent circuit transformation and multi-physics field finite element simulation is used to research the characteristics of piezoelectric acoustic transducer with broadband matching performance, and the variation of electro-acoustic characteristics of the transducer with different matching circuits is obtained. By reasonably choosing the values of inductance and capacitance as well as the way of series-parallel connection, the double-humped response is achieved to broaden the working frequency range, and to improve the transmitting voltage response (TVR) and reduce the fluctuation in the working frequency range. According to the simulation data, a transducer is designed with the tuned matching using series inductance. The performance difference of the transducer before and after matching is tested. The test results are in agreement with the simulation calculation. It means that the multi-physics field simulation calculation has good guiding significance for predicting and analyzing the performance of underwater acoustic transducer. |
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