一种多谐振宽带复合棒声学换能器的设计与性能分析  

Design and Performance Analysis of a Multi-resonant Broadband Tonpilz Acoustic Transducer

作　　者：田丰华[1] 宋哲[1] 

机构地区：[1]中国船舶重工集团公司第705研究所,陕西西安710075

出　　处：《鱼雷技术》2016年第6期412-416,共5页Torpedo Technology

摘　　要：为了拓展压电声学换能器工作带宽,提高发射性能,减小发射起伏,综合利用了匹配层、双激励、弯曲振动、中间质量块开槽等拓展带宽的方法,设计了一种新型多谐振宽带复合棒声学换能器。利用有限元方法对该换能器进行了模态分析,研究了匹配层厚度、中间质量块尺寸对其发射性能的影响。通过试验验证,得到该换能器工作带宽12 k Hz^42 k Hz,发送电压响应大于140 d B,频带内发送电压响应起伏小于6 d B。试验测试结果与计算结果具有较好的一致性。To broaden the working bandwidth of an acoustic transducer, improve its transmitting performance and reduce transmitting fluctuation,we designed a novel multi-resonant broadband Tonpilz acoustic transducer by using compre- hensively the matching layer, the double exciting, the bending vibration, and slotting on the middle mass block, etc., employed the finite element method to conduct modal analysis of the transducer, and investigated the influences of the thickness of the matching layer and the size of the middle mass block on the performance of the transducer. Test verified that the working bandwidth of the transducer was 12 kHz -42 kHz,the transmission voltage response（TVR） was greater than 140 dB, and the transmission voltage fluctuation in the frequency band was less than 6 dB. Calculation results were in good agreement with the test ones.

关 键 词：声学换能器 多谐振宽带 模态分析 有限元方法 

分 类 号：TJ630.34[兵器科学与技术—武器系统与运用工程] TB556[理学—物理]