电磁式电声换能器性能研究及优化设计Ⅰ:理论分析  

Study and Optimization Design of Electromagnetic Electroacoustic Transducer Performance Ⅰ:Theoretical Analysis

作　　者：张鸿翔 ZHANG Hongxiang(No.3R&D Institute,CETC,Beijing 100015,China)

机构地区：[1]中国电子科技集团公司第三研究所,北京100015

出　　处：《电声技术》2020年第5期87-92,共6页Audio Engineering

摘　　要：本文介绍了一种具有最高电声转换效率的无源电声器件——电磁式换能器,阐述了其工作原理,为内部的磁路系统、动铁片系统、声腔系统等工作机制建立了合理的数学模型,分析了制造中一种影响装配效率常见的"吸死"现象产生的原因,并为解决"吸死"问题及提升换能器性能提供了理论依据。Electromagnetic electroacoustic transducer(EMEAT), a passive electroacoustic device with maximum electroacoustic converting efficiency is introduced in this paper. The working principle of EMEAT is explained, and a reasonable mathematical model of the magnetic circuit system, the moving iron system, and the acoustic cavity of the EMEAT is established. The cause of the "magnetic pull-in effect" which frequently occurs in fabrication is analyzed, and the theoretical foundation of the solution of the "magnetic pull-in effect" elimination and the performance improvement is provided.

关 键 词：电磁式换能器 电声器件 送受话器 非线性力 

分 类 号：U674.703.3[交通运输工程—船舶及航道工程]