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首页>《中国测试》期刊>本期导读>基于双振速测量面的噪声源定位方法研究

基于双振速测量面的噪声源定位方法研究

149    2019-05-28

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作者:郝振宇, 郭世旭, 郑慧峰, 王月兵, 杨枭杰

作者单位:中国计量大学计量测试工程学院, 浙江 杭州 310016


关键词:声学;噪声源定位;近场声全息;双测量面


摘要:

在较远距离准确定位噪声源对水下航行器等设备的减振降噪具有重要意义。该文提出一种基于双振速测量面的近场声全息技术,采用双测量面对双噪声源信号的质点振速信息进行提取,利用前后两测量面间的相位差构成格林函数,并根据声场重建公式进行近场声全息声场重建。数值仿真及主峰位置偏差分析表明,基于振速测量的双测量面近场声全息技术,与单振速测量面、双声压测量面的近场声全息技术相比,可以忽略边缘误差的影响,并可以在较远的测量距离更准确的定位声源位置,验证了基于双振速测量面近场声全息技术的有效性和可行性。


Research on noise source localization method based on double vibration rate measurement surface
HAO Zhenyu, GUO Shixu, ZHENG Huifeng, WANG Yuebing, YANG Xiaojie
College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310016, China
Abstract:  It is very important for the reduction of the vibration and noise of underwater vehicle and other equipment to locate the noise source accurately in a long distance. This paper proposed a near field acoustic holography technique based on the double vibration velocity measuring surface, the particle velocity information of double noise source signal was extracted by double measurement, the Green's function is formed by the phase difference between the front and back measured surface, and the near field acoustic field reconstruction is carried out according to the formula of sound field reconstruction. And main position deviation analysis of numerical simulation indicate as follows:Compared to the single vibration velocity measurement surface and the double pressure measuring near-field acoustical holography technology, the dual measuring plane near-field acoustical holography technology based on the velocity measurement can ignore the effect of edge error, and can measure distance in far more accurate positioning the sound source location, it was verified to be effective and feasible based on the double velocity measurement plane near-field acoustical holography technique.
Keywords: acoustics;noise source location;near-field acoustic holography;dual measurement surface
2019, 45(5):140-144  收稿日期: 2018-05-21;收到修改稿日期: 2018-06-19
基金项目: 国家重点研发计划重点专项(2017YFF0206403)
作者简介: 郝振宇(1992-),男,河南濮阳市人,硕士研究生,专业方向为仪器仪表工程
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