摘要
分析了传统的Fourier变换和短时Fourier变换STFT等两种信号分析方法在时-频分析中存在的问题。阐述了小波变换在诊断奇异信号中的作用。
The existing problems in time-frequency analysis of the traditional Fourier transformation and STFT signal analysing methods are analyzed. The function of wavelet transformation in the diagnosis of singular signal is elaboraed.
出处
《湖北汽车工业学院学报》
2000年第2期33-36,共4页
Journal of Hubei University Of Automotive Technology
关键词
小波变换
时-频分析
奇异信号
机械
故障诊断
wavelet transformation
time-frequency analysis
time-frequency localization
diagnosis
singular signal
