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| 管道有源消声实验系统的阻抗控制研究 | |
| 引用本文： | 吴斌,周大森,费仁元,杨立勇.管道有源消声实验系统的阻抗控制研究[J].中国机械工程,2003,14(6):457-458,504. |
| 作者姓名： | 吴斌 周大森 费仁元 杨立勇 |
| 作者单位： | 1. 北京工业大学,北京市,100022 2. 北京工业大学环境与能源工程学院 3. 北京工业大学机械与应用电子技术学院 |
| 基金项目： | 北京市自然科学基金资助项目 ( 3 0 0 2 0 0 4) |
| 摘 要： | 以声阻抗为控制目标，对管道有源消声实验系统的消声机理进行了分析和探讨，研究表明，有源消声的效果取决于次级扬声器位置的等效声阻抗以及管道的阻抗分布特性，在消声实验台的自适应控制结果表明，在主频上取得了降噪40dB以上的效果。 |
| 关 键 词： | 有源消声 声阻抗 自适应控制 Filtered－X算法 |
| 文章编号： | 1004-132X(2003)06-0457-02 |
Impedance Control Study on Active Adaptive Noise Control Experimental System in Ducts |
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| Wu Bin.Impedance Control Study on Active Adaptive Noise Control Experimental System in Ducts[J].China Mechanical Engineering,2003,14(6):457-458,504. | |
| Authors: | Wu Bin |
| Abstract: | Active noise control technique in ducts has been developed quickly in these years.But most of them adopted the interferential principle to explain the noise cancellation phenomenon.The analysis on responsive characteristics of active noise control system has never been found.In this article,we take the acoustic impedance as control target,and discuss the fundamentals of the active noise control experimental system.The studying results prove that the effect of active noise control system depends on the equivalent impedance at the secondary source location and the impedance distributed characteristics of the muffler.The sound pressure level of main frequency was decreased above 40dB, which is demonstrated by the experimental results. |
| Keywords: | active noise control acoustic impedance adaptive control filtered-X algorithm |
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