| 基于Z变换的频谱细化方法及其应用 |
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| 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 |
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| 作者姓名： | 李力 |
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| 作者单位： | 武汉水利电力大学 |
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| 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。
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| 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 |
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| 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 |
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| Authors: | Li Li |
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| Affiliation: | Gezhouba Institute of Hydro-electric Engineering |
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| 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. |
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| Keywords: | Z-transformation Modulation sideband Spectrum Cepstrum Distinguishability Zoom cepstrum |
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