| 频谱细化技术与功率倒频谱在振动信号分析中的应用 |
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| 引用本文： | 蔡熹耀,李志荣.频谱细化技术与功率倒频谱在振动信号分析中的应用[J].洛阳工业高等专科学校学报,1999(3). |
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| 作者姓名： | 蔡熹耀 李志荣 |
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| 作者单位： | 武汉工业大学!武汉430081(蔡熹耀)，洛阳工业高等专科学校!洛阳471003(李志荣) |
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| 摘 要： | 频谱细化技术和功率倒频谱是振动信号分析的两种重要辅助方法.采用细化处理,可以对信号频谱上感兴趣的一段频带进行“局部放大”,从而提高频率分辨率;倒频谱可以识别信号中较弱的周期成分,并对识别调制信号的边频县有特殊的效果.本文在介绍这两种方法基本原理的基础上,运用工程实例说明了其在振动信号分析中的实际应用效果.
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| 关 键 词： | 振动分析 频谱细化 功率倒频谱 自功率谱密度 |
The Application of Spectrum Zoom Technique and Power Cepstrum in Vibration Signal Analysis |
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| Cai Xiyao,Li Zhirong.The Application of Spectrum Zoom Technique and Power Cepstrum in Vibration Signal Analysis[J].Journal of Luoyang Technology College,1999(3). |
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| Authors: | Cai Xiyao Li Zhirong |
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| Institution: | Cai Xiyao Li Zhirong |
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| Abstract: | Spectrum zoom technique and power cepstrum are two important aided methods in vibration signal analysis. Using spectrum zoom technique the interested frequency band of signal spectrum can be amplified partially, the frequency resolution ratio can be increased. Using power cepstrum the weaker periodic signal can be recognized, and the side frequency of modulation signal can be recognized effectively. This paper introduces the basic principle about these two methods, and illustrates the practical application effect in vibration signal analysis by engineering examples. |
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| Keywords: | Vibration signal analysis Spectrum zoom technique Power cepstrum Auto-spectral density |
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