摘要
介绍了一种精确计算机械振动信号频谱幅、频、相的方法。在机械振动信号频谱分析的基础上,利用改进的傅立叶变换谱,可以大大提高频率分辨率。经计算检验,该方法精度较高。
This paper introduces a new method for accurately calculating amplitude,frequen- cy and phase of spectral lines of a mechanical vibration signal.On the basis of analyzing spectrum of mechanical vibration signal.It is possible to greatly improve frequency discrimi- nation by means of Improved Fourier Transform.The accuracy obtained is much higher than ordinary interpolation methods.
出处
《振动．测试与诊断》
EI
CSCD
1996年第2期13-17,共5页
Journal of Vibration,Measurement & Diagnosis
关键词
机械振动
频谱分析
傅立叶变换
mechanical vibration
spectrum analysis
Fourier transform
