矿用减速器振动信号频率解调分析  

Frequency Demodulation Analysis of Mine Reducer Vibration Signal

作　　者：张礼才 

机构地区：[1]中国煤炭科工集团,太原研究院有限公司,太原030032

出　　处：《煤矿机械》2017年第11期162-163,共2页Coal Mine Machinery

基　　金：山西省青年科技基金(2015021127)

摘　　要：分析了矿用减速器振动信号频谱结构的复杂性,介绍了振动信号频率解调分析的基本理论,应用希尔伯特-黄变换中的经验模式分解方法,得出了矿用减速器满足单分量条件的本质模式函数,计算了瞬时频率,通过快速傅里叶变换,获得了矿用减速器瞬时频率的频谱,进行了频谱分析。The spectral structure complexity of the mine reducer vibration signal was analyzed. The basic theory of the vibration signal frequency demodulation analysis was introduced,the essential mode function which met the single component requirement was obtained by using empirical mode decomposition in the Hilbert-Huang change. The instantaneous frequency was calculated,the spectrum of the instantaneous frequency was obtained by performing the fast fourier transform ,the spectrum analysis was done.

关 键 词：矿用减速器 频率解调 本质模式函数 瞬时频率 频谱 

分 类 号：TD676[矿业工程—矿山机电]