机械噪声故障诊断中小波变换的应用  

APPLICATION OF WAVELET THEORY IN MECHANICAL NOISE FAULT DIAGNOSIS

作　　者：胡政[1] 陈循[1] 温熙森[1] 

机构地区：[1]国防科技大学机械电子工程与仪器系

出　　处：《振动与冲击》1997年第4期49-53,共5页Journal of Vibration and Shock

摘　　要：本文讨论了小波分析理论在机械噪声故障诊断中的应用。为了识别发动机噪声信号中表征故障的间歇性撞击声,本文构造的一种新型的小波——指数衰减型小波函数,它能有效地识别出间歇性撞击声。本文最后给出了实验结果并与经典高斯型小波分析的结果进行了比较。In the paper the application of wavelet transform is discussed in mechanical noisefault diagnosis. A new type of wavelet——Exponential Damping Wavelet is constructed to detectthe knocking sound caused by mechanical faults in an engine, Experimental results show that by this wavelet effective features of those faults can be extracted from noise signal. It is also compared to the classic Gaussian wavelet to show its advantage.

关 键 词：小波变换 故障诊断 特征提取 机械噪声 

分 类 号：TB535[理学—物理] TP277[理学—声学]