摘要
阐述了基于多球域波叠加法的局部近场声全息声场重建原理,在此理论的基础上,采用重心法用于不规则振动体的多球形虚拟源强配置研究,并根据灰度重心法将多球形虚拟源分为质心球虚拟源强和非质心球虚拟源强两类。并在加入高斯白噪声情况下,运用L-曲线和Tikhonov正则化相结合的方法进行声场重建,通过计算和仿真证明了该方法的有效性。
The principle of sound field reconstruction about Patch Near-field Acoustic Holography based on Wave Superposition Approach of multiple ball fields is explained in detail. Based on this theory,the virtual source of multiple ball fields for irregular oscillating body by gravity method is investigated. According to the grayscale gravity method,the virtual sources of multiple ball fields are divided into centroid ball and non-centroid ball. Under the condition of adding Gaussian white noise,sound field reconstruction adopts the method integrating L-curve by Tikhonov regularization method. Through theoretical analysis and numerical simulation,the proposed method availability is testified.
出处
《沈阳理工大学学报》
CAS
2014年第6期54-59,91,共7页
Journal of Shenyang Ligong University
基金
国家自然科学基金资助(11162001
51105083)
广西自然科学基金项目(2O12GXNSFAAO53207
2013GXNSFAA019318)
关键词
重心法
波叠加法
局部近场声全息
多球形虚拟源强
gravity method
Wave Superposition Approach
patch near-field acoustic holog-raphy
the virtual sources of multiple ball fields