| 基于振动信号提取柴油机低频排气噪声特征研究 |
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| 引用本文： | 郭文勇,朴甲哲,张永祥.基于振动信号提取柴油机低频排气噪声特征研究[J].海军工程大学学报,2002,14(2):29-30. |
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| 作者姓名： | 郭文勇 朴甲哲 张永祥 |
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| 作者单位： | 海军工程大学,动力工程学院,湖北,武汉,430033 |
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| 摘 要： | 针对柴油机低频排气噪声的频率与强度很难准确地用理论计算等困难 ,试验研究了柴油机排气管内低频排气噪声信号与排气管壁上振动信号的相互关系 .结果表明 ,低频范围内 ,振动信号与噪声信号几乎呈现周期性的完全相干 ,在相干频率处振动信号能反映排气噪声的类周期性 .
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| 关 键 词： | 柴油机 排气噪声 频谱分析 |
| 文章编号： | 1009-3486(2002)02-0029-02 |
| 修稿时间： | 2001年7月3日 |
The research on diesel's low-frequency exhaust noise signal characteristics extraction based on vibration signal |
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| GUO Wen\|yong,PIAO Jia\|zhe,ZHANG Yong\|xiang.The research on diesel''''s low-frequency exhaust noise signal characteristics extraction based on vibration signal[J].Journal of Naval University of Engineering,2002,14(2):29-30. |
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| Authors: | GUO Wen\|yong PIAO Jia\|zhe ZHANG Yong\|xiang |
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| Abstract: | It is difficult to calculate the diesel's low\|frequency exhaust noise frequency and intensity by use of theory, the coherence between exhaust noise signal and vibration signal on exhaust duct is studied through experiments in this paper. The result shows that the coherence of them is basically quasi\|periodic, and exhaust noise signal can be reflected by vibration signal on the coherent frequency. |
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| Keywords: | diesel low\|frequency noise frequency analysis |
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