中国民航大学学报 ›› 2013, Vol. 31 ›› Issue (4): 10-14.

• 民用航空 • 上一篇    下一篇

基于传声器阵列的航空发动机噪声源识别研究

闫国华,任升,王玉臣   

  1. (中国民航大学航空工程学院,天津 300300)
  • 收稿日期:2012-06-06 修回日期:2012-12-23 出版日期:2013-08-25 发布日期:2013-10-08
  • 作者简介:闫国华(1964—),男,陕西韩城人,教授,博士,研究方向为飞机噪声.

Aero-engine noise source identification based on microphone array DAMAS

YAN Guo-hua,REN Sheng,WANG Yu-chen   

  1. (College of Aeronautical Engineering,CAUC,Tianjin 300300,China)
  • Received:2012-06-06 Revised:2012-12-23 Online:2013-08-25 Published:2013-10-08

摘要:

为了实现新一代发动机的噪声源识别技术,对于测试所得到的民用飞机发动机的整体噪声数据,通过部件噪声分解方法,将其分解到各个部件,并且认识当代民用飞机发动机噪声源的基本特征。开发出利用发动机整机噪声数据的噪声源识别系统,采用反卷积法将波束成型法的结果作为中间声源,从中获取所需要的声源信息,使得最终的结果更加准确。通过获取的发动机整机噪声数据,验证传声器阵列技术的可行性,并且证明了系统的可行性和有效性。

关键词: 传声器阵列, 噪声测量, 声源识别, 反卷积法

Abstract:

In order to implement noise source identification technique of a new generation engine,and to learn basic characteristics of aero-engine noise source,the noise data are processed with the component noise decomposition method. Basing on the noise data,the noise source identification system is developed;the beam forming method results processed with DAMAS are employed as intermediate sound source to obtain the required sound source information and to make the processed results more accurate. The engine noise data verifies the validity and feasibility of the microphone array technology and the noise identification system.

Key words: microphone array, noise measurement, sound identification, DAMAS

中图分类号: