基于等效源法的近场声全息噪声源识别系统研究与开发

Development of noise source identification system using near-field acoustical holography based on equivalent source method

文章在基于等效源法的近场声全息方法基础上,结合LabVIEW平台,开发了一套噪声源识别系统。该系统具备数据采集、数据分析、声场可视化等功能,同时具备计算速度快、实用性强以及适用于任意形状声源分析等特点。介绍了该系统方法原理以及系统软硬件设计方案,运用该系统对某三相异步电动机进行了声源识别研究,实验结果证明了该系统的功能和效果。

By using the near-field acoustical holography （NAH） based on equivalent source method, a LabVIEW platform based noise source identification system is developed. The system has such func- tions as data acquisition, data processing and visualization of acoustic field. It is easy to use, fast in computation and adapted to arbitrarily-shaped sources. The principle of the system and the design scheme of hardware and the software are introduced. The result of the experiment on a three-phase a- synchronous electric motor verifies the function and performance of the system.