基于声振信号倒频谱分析的柴油机振噪源识别  

Diesel Engine Vibration and Noise Source Identification based on Cepstrum Analysis of Acoustic Signal

作　　者：李志锐 张志军[2] 王尚学[2] LI Zhirui;ZHANG Zhijun;WANG Shangxue(Tianjin Internal Combustion Engine Research Institute(Tianjin Motorcycle Technical Center),Tianjin,300072,China;China North Engine Research Institute)

机构地区：[1]天津内燃机研究所(天津摩托车技术中心),天津300072 [2]北方发动机研究所

出　　处：《小型内燃机与车辆技术》2021年第5期57-61,共5页Small Internal Combustion Engine and Vehicle Technique

摘　　要：现代信号处理技术在振动和噪声的振源和声源识别方面有较为广泛的应用。运用信号处理技术中的倒谱技术在柴油机的噪声信号和振动信号进行噪声源识别方面的研究工作。结果表明,该方法能够有效地将源信号从复杂的频谱波形中提取出来,识别出了噪声的主要激励源和辐射源,有利于人们对振源和声源进行识别。Modern signal processing technology is widely used in vibration and noise source identification.As one of signal processing techniques,cepstrum technique was used to study noise source identification of diesel via engine noise signal and vibration signal.The results show that the method can effectively extract the source signal from the complex spectral waveform,and identify the main excitation source and radiation source of noise,which is beneficial to the identification of vibration source and sound source.

关 键 词：倒频谱 信号 分析 柴油机 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程]