| 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,(3):455~459 |
| 噪声源识别的混合波叠加法及其数值仿真研究 |
| Noise source identification based on combined wave superposition and numerical simulation |
| 投稿时间：2005-11-22 修订日期：2006-02-06 |
| DOI： |
| 中文关键词: 波叠加法 声源识别 声场重建 HELS |
| 英文关键词: wave superposition method sound source identification acoustic reconstruction HELS |
| 基金项目:国家自然科学基金资助项目(50335030);日本Fujitec公司资助项目。 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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