| 发动机排气噪声有源控制技术的研究与应用 |
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| 引用本文： | 仪垂杰,吕广庆.发动机排气噪声有源控制技术的研究与应用[J].汽车工程,1993,15(4):220-225. |
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| 作者姓名： | 仪垂杰 吕广庆 |
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| 作者单位： | 西安交通大学
(仪垂杰，吕广庆)，西安交通大学(黄协清) |
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| 摘 要： | 本文根据发动机排气噪声的声学特性提出了有源消声系统的数学模型。据此,对研制的控制系统进行的试验结果表明:在中低频段降噪效果明显,主要声峰频率上平均降噪量达13.6dB。
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| 关 键 词： | 发动机 排气 噪声控制 汽车 |
Study and Application of Active Sound Attenuation to Exhaust Noise from Engines |
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| Abstract: | Based on acoustic characteristics of exhaust noise from engines, a mathematical model of active sound attenuation for the noise is built up in this paper. A controller of active sound attenuation is designed based on the model. Experimental results indicate that the effectiveness of noise reduction is rather good at low and medium frequences. The average noise attenuation is about 13.6 dB at typical frequences. |
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| Keywords: | Engine Exhaust Noise control |
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