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发动机噪声源识别的实验研究
引用本文:吴行让,杨诚,张攀登,杨振东.发动机噪声源识别的实验研究[J].摩托车技术,2007(9):23-27.
作者姓名:吴行让  杨诚  张攀登  杨振东
作者单位:1. 重庆大学机械工程学院
2. 建设工业(集团)有限责任公司
摘    要:通过发动机近场表面声强测量,识别出该发动机的主要表面噪声源,通过对声强频谱、发动机的时间功率谱阵分析,找出峰值频率成分,得出的共振频率正好对应于声强峰值频率,从而识别出该发动机的主要噪声源及主要噪声的频率构成,为该发动机的噪声控制提供依据.

关 键 词:发动机  噪声源  识别  声强法  时间功率谱阵  发动机  噪声源识别  实验  研究  Identification  Noise  Engine  噪声控制  构成  峰值频率  主要噪声源  对应  共振频率  频率成分  分析  功率谱阵  时间  频谱  声强测量  表面
修稿时间:2007-04-16

An Experimental Study on Engine Noise Identification
Wu Xingrang,Yang Cheng,Zhang Pandeng,Yang Zhendong.An Experimental Study on Engine Noise Identification[J].Motorcycle Technology,2007(9):23-27.
Authors:Wu Xingrang  Yang Cheng  Zhang Pandeng  Yang Zhendong
Institution:Insitute of Mechanical Engineering Chongqing University;Jianshe Industries (Group
Abstract:The main surface noise source of engine is identified through measurement of sound intensity of the surface of near field of the engine and the peak frequency element can be found out through the analysis of the sound intensity spectrum and the time-power spectrum matrix, and the resonant frequency obtained is just correspondent to the peak frequency of the sound in-tensity, thus finding out the main noise source of the engine and the frequency composition of the main noise source, and providing basis for noise control of the engine.
Keywords:Engine Noise source Identification Sound intensity method Time-power spectrum matrix
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