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基于Z变换的频谱细化方法及其应用
引用本文:李力. 基于Z变换的频谱细化方法及其应用[J]. 振动与冲击, 1997, 16(2): 44-46
作者姓名:李力
作者单位:武汉水利电力大学
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。

关 键 词:Z变换  调制边带  频谱  分辨率  倒频谱  细化倒谱

A METHOD OF CALCULATING ZOOM SPECTRUM BASED ON Z-TRANSFORMATION AND ITS APPLICATIONS
Li Li. A METHOD OF CALCULATING ZOOM SPECTRUM BASED ON Z-TRANSFORMATION AND ITS APPLICATIONS[J]. Journal of Vibration and Shock, 1997, 16(2): 44-46
Authors:Li Li
Affiliation:Gezhouba Institute of Hydro-electric Engineering
Abstract: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.
Keywords:Z-transformation   Modulation sideband   Spectrum   Cepstrum   Distinguishability  Zoom cepstrum  
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