摘要
通过对轧机的冲击信号特征频率进行分析,比较了几种常用频谱(或时频)分析方法(傅立叶变换、短时傅立叶及小波分析)在此类分析中的适用性及各自的特点,得出短时傅立叶在轧机冲击信号特征频率估计中占有一定的优势。
The essay compares the applicability and their respective characteristics of several kinds of spectrum （ or time - frequency） analysis in common use such as Fourier transform, short - term Fourier and wavelet analysis by analyzing the characteristic frequency of an impulsive signal of rolling mill. In conclusion, the short - term Fourier has an advantage over others in estimating characteristic frequency of impulsive signal of the rolling mill.
出处
《冶金设备》
2006年第1期40-42,共3页
Metallurgical Equipment
关键词
冲击信号
频谱分析
时频分析
Impulsive signal Spectrum analysis Time -frequency analysis
