| 微穿孔板的主动吸声研究 |
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| 引用本文： | 朱从云,黄其柏. 微穿孔板的主动吸声研究[J]. 机械设计与制造, 2004, 0(4): 38-40 |
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| 作者姓名： | 朱从云 黄其柏 |
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| 作者单位： | 华中科技大学机械科学与工程学院,武汉,430074;华中科技大学机械科学与工程学院,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目(50075029) |
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| 摘 要： | 提出用微穿孔板进行主动吸声的方法。用微穿孔板作为主动吸声的材料，检测出入射声波的频率，得到微穿孔板的共振频率，从而得到微穿孔板背后空腔的深度，移动微穿孔板背后的刚性壁以满足空腔深度的要求，使得吸声系数达到最大，从而达到主动吸声的目的。最后，进行了数值计算与实验，计算结果与实验结果能很较好的吻合，说明了该主动吸声方法的可行性。
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| 关 键 词： | 主动吸声 微穿孔板 共振频率 空腔深度 |
| 文章编号： | 1001-3997(2004)04-0038-02 |
| 修稿时间： | 2003-11-28 |
Research of active absorption on tiny hole plate |
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| ZHU Cong yun,HUANG Qi bai. Research of active absorption on tiny hole plate[J]. Machinery Design & Manufacture, 2004, 0(4): 38-40 |
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| Authors: | ZHU Cong yun HUANG Qi bai |
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| Abstract: | A method of active absorption using tiny hole plate is posed. Tiny hole plate is used as the material of active absorption, the frequency of incident sound wave is measured in order to attain the formant frequency and the cavity depth of the tiny hole plate, the rigid wall backed the tiny hole plate is moved satisfied with the cavity depth so that the absorption coefficient is the maximal and the aim of active absorption is attained. At the last, numerical calculation and experiment is carried out, the numerical calculation result is satisfied with the experiment result to illuminate the method feasible. |
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| Keywords: | Active absorption Tiny hole plate Formant frequency Cavity depth |
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