齿轮箱的循环平稳近场声成像研究  

Cyclostationary Near-field Acoustic Holography for Gearboxes

作　　者：朱松 张二亮[1] 高肖雨 Zhu Song;Zhang Erliang;Gao Xiaoyu(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学机械与动力工程学院,河南郑州450001

出　　处：《机械传动》2024年第12期29-34,共6页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(61873244)。

摘　　要：针对传统近场声全息(Near-field Acoustic Holography,NAH)难以实现齿轮箱声场重建的问题,充分利用复杂噪声的循环平稳特性,将循环平稳分析和等效源近场声全息方法相结合,建立了一种齿轮箱噪声成像方法。首先,从噪声信号中估计循环频率的集合;其次,选择感兴趣的循环频率,计算相应的循环谱密度函数;随后,应用等效源近场声全息方法重建齿轮箱的潜在噪声源;最后,通过仿真和实验测试,验证了该噪声成像方法的有效性。Regarding the problem that the traditional near-field acoustic holography(NAH)has difficulty in reconstructing the sound field of the gearbox,this work makes full use of the cyclostationary characteristics of the radiated noise and combines the cyclostationary signal analysis with the equivalent source NAH algorithm to develop a sound imaging method for the gearbox.Firstly,the set of cyclic frequencies was estimated from the noise signal;secondly,the cyclic frequency of interest was selected,and the corresponding cyclic spectral density function was calculated;thirdly,the equivalent source NAH method was developed to reconstruct the potential sound source of the gearbox.Finally,the effectiveness of the sound imaging method was justified by the simulation and experimental data.

关 键 词：齿轮箱 循环平稳 近场声全息 等效源法 

分 类 号：TH132.41[机械工程—机械制造及自动化]