摘要
本文介绍一种基于Z变换的频谱细化方法—C-ZOOM算法。应用该方法对频谱细化后再进行傅利叶变换得到的细化倒谱,克服了在频率分辨率较低时,倒频谱效果较差的缺点,并将其应用于识别齿轮振动信号的调制边带结构。
A method of calculating zoom spectrum based on Z-transformation, called C-ZOOM is introduced. Cepstrum is an efficient method, but may be ineffective in the case of lower resolution. The shortcoming can be overcome by using C-ZOOM which is, as on example, Applied to distinguish the sideband structure of a modulation vibration signal of gear transmission.
出处
《振动与冲击》
EI
CSCD
1997年第2期44-46,共3页
Journal of Vibration and Shock
关键词
Z变换
倒频谱
细化倒谱
齿轮
振动
频谱细化
Z-transformation, Modulation sideband, Spectrum, Cepstrum, Distinguishability,Zoom cepstrum
