短时傅立叶变换在振动信号处理中的应用  

Vibration Signal Processing Based on Short Time Fourier Transform

作　　者：张东[1] 吴晓琳[1] 

机构地区：[1]92941部队96分队

出　　处：《计算机与数字工程》2011年第8期154-155,195,共3页Computer & Digital Engineering

摘　　要：短时非平稳振动信号往往淹没于较长时间的平稳或准平稳段落之中,从而忽略对其处理,使深入分析信号的全貌受到限制。针对实测振动信号中的这类信号,引进短时傅立叶变换进行局部数据处理,得到良好的时频分辨率,为全面分析振动信号特性提供了一种方法。As signals of short time non-stationary were often processing was neglected frequently and the whole signal analyzing fourier transform was introduced to deal with local data in the paper. which offered a way to analyze the characters of vibration signal. hidden in the course of long time stationary signal, the was limited. In order to solve the problem, short time High time-frequency resolution was got by this method

关 键 词：振动信号 傅立叶变换 短时傅立叶变换 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]