基于波叠加的噪声源识别实验研究  

EXPERIMENTAL STUDY OF NOISE SOURCE IDENTIFICATION BASED ON WAVE SUPERPOSITION METHOD

作　　者：刘先锋[1] 陈进[1] 张桂才[1] 雷宣扬[1] 李加庆[1] 陈少林[2] 

机构地区：[1]上海交通大学振动冲击噪声国家重点实验室,上海200030 [2]南京航空航天大学航空宇航学院,南京210016

出　　处：《振动与冲击》2007年第2期72-74,111,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金重点项目(50335030)资助;日本Fujitec公司资助项目

摘　　要：提出了基于波叠加的噪声源识别和定位方法。该方法克服了边界元法声全息固有的奇异性和非唯一性问题,原理上容易理解,计算上容易实现。从实验出发,建立了实验所需的采集和分析系统,根据实测数据利用自谱和互谱获取全息面上的复声压,结合正则化处理给出了同一平面三个音箱源识别的效果图,实验验证了该方法在进行噪声源识别和定位时具有较好的效果。The method of noise source identification and location based on Wave Superposition Method(WSM) is proposed.The problems such as singular integration and nonuniqueness are overcome in WSM,which are inherent to BEM-based NAH.It is easy to understand in theory and to realize in calculation.Data acquisition and analysis system needed in experiments is established.Auto-spectrum and cross-spectrum are used to get complex sound pressure on holography plane according to measured data.Identification of three sound boxes sources Cocating on a plane has been conducted and the experimental results show that WSM combined with regularization method is of good effect in noise resource identification and location.

关 键 词：波叠加方法 噪声源识别 正则化 复声压 实验研究 

分 类 号：TB53[理学—物理] O429[理学—声学]