800Hz Terfenol-D鱼唇式弯张换能器  

800Hz Terfenol-D Fish-lip flextensional transducer

作　　者：莫喜平[1] 刘建国[1] 崔政[1] 刘慧生[1] 姜广军[2] 

机构地区：[1]中国科学院声学研究所,北京100080 [2]解放军军需大学,长春130062

出　　处：《应用声学》2002年第2期12-15,共4页Journal of Applied Acoustics

摘　　要：本文研制了８００Ｈｚ Ｔｅｒｆｅｎｏｌ－Ｄ鱼唇式弯张换能器，换能器设计中采用永磁偏磁场和能有效抑制涡流损耗的闭合磁路结构，最高声源级１８５ｄＢ，－３ｄＢ带宽１８０Ｈｚ。这种鱼唇式弯张换能器克服了连续直流提供偏磁场时发热强的缺点，并且仅需要普通的功率放大器，更适于长时间连续工作，使这一新型低频大功率水声换能器趋于实用化。A Terfenol-D Fish-mouth flextensional transducer with resonance frequency 800Hz is developed which includes a closed magnetic circuit with permanent magnetic biasing and a structure that is able to control the eddy current. Its maximum source level is 185dB and its -3dB bandwidth 180Hz. The effect of heating due to a DC bias magnetic field is eliminated in the design of the traseducer, which needs only a conven- tional power amplifier and is sultable for continual operation for a long time. This new type of low-frequency high-power transducers has evolved into utility.

关 键 词：800Hz TERFENOL-D 鱼唇弯张换能器 永磁偏磁场 闭合磁路 设计 水声换能器 

分 类 号：TB565.1[交通运输工程—水声工程]