| 扫描声强法声源声功率测量通用数学模型 |
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| 引用本文： | 毕传兴,陈剑,周广林,陈心昭.扫描声强法声源声功率测量通用数学模型[J].振动工程学报,2004,17(1):39-43. |
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| 作者姓名： | 毕传兴 陈剑 周广林 陈心昭 |
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| 作者单位： | 合肥工业大学动态测试中心,合肥,230009 |
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| 基金项目： | 国家自然科学基金资助项目 (编号 :5 0 2 75 0 4 4 )，高等学校博士点基金资助项目 (编号 :2 0 0 2 0 35 90 0 5 )，安徽省自然科学基金资助项目 (编号 :0 0 0 4 74 18) |
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| 摘 要： | 建立了声源声功率测量的通用数学模型。以半球测量面和平行六面体测量面为例，应用通用模型建立了两种情况下的声功率误差分析模型。验证了通过扫描路径近似所测得的声功率能够很好地反映声源的实际声功率。当人工执行扫描测量，实际扫描路径存在一定的偏移时，只要扫描偏移值在一定的容差范围内，所测得的声源声功率仍然能够取得较好的结果。
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| 关 键 词： | 扫描声强法 声源 声功率 测量 数学模型 误差分析 |
| 修稿时间： | 2002年12月9日 |
General Mathematical Model of Sound Power Determination Using Sound Intensity Measurement by Scanning |
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| Bi Chuanxing,Chen Jian,Zhou Guanglin,Chen Xinzhao.General Mathematical Model of Sound Power Determination Using Sound Intensity Measurement by Scanning[J].Journal of Vibration Engineering,2004,17(1):39-43. |
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| Authors: | Bi Chuanxing Chen Jian Zhou Guanglin Chen Xinzhao |
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| Abstract: | The general mathematical model of sound power determination is established firstly. The hemispherical and the parallelepiped measurement surfaces are investigated as examples. Subsequently, their error models are established on the basis of the common model of sound power measurement. The results show that the sound power measured by scanning along a given scanning path with a sound intensity probe can approximate the actual sound power of noise source effectively. When the scanning operation is carried out manually and the path is offset slightly, the measured sound power of noise source is still valid provided the offset is limited to a certain degree. |
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| Keywords: | scanning sound intensity sound power error analysis |
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