小波分析及其在伺服阀性能测试中的应用

Wavelet Analysis and Its Application in Testing Performances of Hydraulic Servo Valve

指出了Fourier变换、窗口Fourier变换在时频分析方面的缺陷 ,从信号分析的角度阐述了小波变换在时频局部化方面的优良的变焦性能。给出了小波分析在液压伺服阀性能测试中的应用实例。

The shortcomings of Fourier transform and windowed Fourier transform in the time frequency localization aspect are pointed out.The excellent capability of the wavelet transform in the time frequency localization aspect is expounded from the point of view of the signal analysis.An example of using the wavelet analysis in testing performances of hydraulic servo valve is given.