电动式换能器:结构、性能及其在声学模拟和校准中的应用与发展趋势
Moving coil transducer:structure,performance,and applications and development trends in acoustic simulation and calibration
桑永杰 1张羿双 2卢苇1
作者信息
- 1. 哈尔滨工程大学水声技术全国重点实验室,黑龙江哈尔滨 150001;哈尔滨工程大学水声工程学院,黑龙江哈尔滨 150001
- 2. 哈尔滨工程大学水声工程学院,黑龙江哈尔滨 150001
- 折叠
摘要
电动式换能器以其小尺寸、超低频、超宽带发射的特点,在舰船辐射噪声模拟、声呐系统校准等领域具有广泛应用.总结了电动式换能器的结构及性能特点,讨论了超低频、超宽带发射的原理,回顾了电动式换能器驱动磁路优化、工作频带拓宽、工作深度提升等相关工作.针对电动式换能器研究中的非线性问题,提出了优化驱动磁路来降低输出力的非线性效应、改善电动式换能器与功率放大器的阻抗匹配以降低波形畸变及谐波失真.对于声腔对换能器性能的影响,可以通过在声腔内充入特性阻抗较小的气体以抑制声源级响应起伏现象.电动式换能器未来的研究应以改善大深度环境下超低频段的声辐射性能、提升连续工作时间及可靠性、降低非线性失真为主要方向.
Abstract
Moving coil transducers have been widely applied to such fields as ship noise simulation and sonar system calibration because of their small size,ultra-low frequency,and ultra-wideband emission.This paper summarized the structure and performance of moving coil transducer.The principle of ultra-low frequency and ultra-wideband emission was described in this paper.The research work of domestic and foreign scholars on the optimization of the driving magnetic circuit,the expansion of the working bandwidth,and the improvement of the working depth were also reviewed.Several hot issues in the research of moving coil transducer,such as nonlinear distortion and the influence of acoustic cavity on the performance,were discussed.It was proposed that optimizing the driving magnetic circuit to reduce the nonlinearity of the output force and improving the impedance matching between the moving coil transducer and the power amplifier can reduce the waveform distortion and harmonic distortion.The fluctuation of the source level can be suppressed by filling the gas with small characteristic impedance into the acoustic cavity.The future trend of moving coil transducer was also prospected.The research of moving coil transducer should focus on improving the ultra-low frequency acoustic radiation performance in large depth environment,increasing the continuous working time and reliability,and reducing the nonlinear distortion,so as to meet the application requirements.
关键词
电动式换能器/非线性/声腔/声源级Key words
moving coil transducer/nonlinearity/acoustic cavity/source level引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据