| 噪声源识别的混合波叠加法及其数值仿真研究 |
| |
| 引用本文： | 薛玮飞,陈进,李加庆.噪声源识别的混合波叠加法及其数值仿真研究[J].声学技术,2007,26(3):455-459. |
| |
| 作者姓名： | 薛玮飞 陈进 李加庆 |
| |
| 作者单位： | 上海交通大学振动、冲击、噪声国家重点实验室,上海,200240 |
| |
| 基金项目： | 国家自然科学基金;日本Fujitec公司资助项目 |
| |
| 摘 要： | 提出了以混合波叠加法作为声场的全息变换算法,建立了基于混合波叠加法在声源识别中的理论模型。此法用相对少量的测点数据就可重建任意形状源表面的声场,克服了基于边界元法的声全息中的奇异值积分和解的非唯一性难题,数值仿真结果表明:它具有计算速度快、重建精度高、测量成本低和容易实施等优点,可以精确地识别和定位机械噪声源,在工程实践中具有广泛的应用前景。
|
| 关 键 词： | 波叠加法 声源识别 声场重建 |
| 文章编号： | 1000-3630（2007）-03-0455-05 |
| 收稿时间： | 2005-11-22 |
| 修稿时间： | 2005-11-222006-02-06 |
Noise source identification based on combined wave superposition and numerical simulation |
| |
| XUE Wei-fei,CHEN Jin and LI Jia-qing.Noise source identification based on combined wave superposition and numerical simulation[J].Technical Acoustics,2007,26(3):455-459. |
| |
| Authors: | XUE Wei-fei CHEN Jin and LI Jia-qing |
| |
| Affiliation: | State Key Laboratory of Vibration, Shock & Noise, Shanghai Jiaotong University, Shanghai 200240, China;State Key Laboratory of Vibration, Shock & Noise, Shanghai Jiaotong University, Shanghai 200240, China;State Key Laboratory of Vibration, Shock & Noise, Shanghai Jiaotong University, Shanghai 200240, China |
| |
| Abstract: | A combined wave superposition method is proposed to transform near-field acoustic holography. A theoretical model to identify sound sources is established. The method allows reconstruction of the acoustic field from an arbitrary object with relatively few measurements, and overcomes nonuniqueness and ill-posedness difficulties. Numerical simulation shows that it can identify and localize sound sources, avoid reconstruction very time, and reduce cost, thus significantly enhancing the reconstruction efficiency. It can become a powerful noise diagnostic tool in engineering. |
| |
| Keywords: | HELS |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《声学技术》浏览原始摘要信息 |
|
点击此处可从《声学技术》下载全文 |
|
