| 基于Fourier与Hilbert变换的纱线信号谱分析研究 |
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| 引用本文： | 朱开玉,燕存良,蔡旺,肖国兰.基于Fourier与Hilbert变换的纱线信号谱分析研究[J].上海纺织科技,2006,34(2):21-22. |
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| 作者姓名： | 朱开玉 燕存良 蔡旺 肖国兰 |
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| 作者单位： | 1. 上海交通大学国家模具CAD研究工程中心,上海,200030
2. 上海国纺检测科技有限公司,上海,200086 |
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| 摘 要： | 介绍了两种信号谱分析方法——基于Fourier变换思想的波谱分析及基于经验模态分解的Hilhert边际谱分析，并将其分别应用到纱线信号的时频分析中。基于经验模态分解的边际谱分析方法是一种完全不同于传统Fourier谱分析的新方法，文中介绍了Hilhert边际谱的求解过程，通过将Fourier谱图与Hilbert边际谱进行对比可知，Hilhert边际谱更适用于对纱线信号的非平稳过程处理。
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| 关 键 词： | 测试 纱线信号 谱分析 波谱图 Hilbert边际谱 经验模态分解 |
| 文章编号： | 1001-2044（2006）02-0021-02 |
| 收稿时间： | 2006-01-25 |
| 修稿时间： | 2006-01-25 |
Analysis and research of yarn signal spectrum based on Fourier and Hilbert |
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| ZHU Kai-yu,YAN Cun-liang,CAI Wang,XIAO Guo-lan.Analysis and research of yarn signal spectrum based on Fourier and Hilbert[J].Shanghai Textile Science & Technology,2006,34(2):21-22. |
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| Authors: | ZHU Kai-yu YAN Cun-liang CAI Wang XIAO Guo-lan |
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| Affiliation: | 1. Jiaotong University, Shanghai 200030, China; 2. Shanghai Guofang Test Co., Ltd., Shanghai 200086, China |
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| Abstract: | This article introduces two spectrum analysis methods,the wave spectrum based on Fourier transform and the Hilbert marginal spectrum based on empirical mode decomposition(EMD),and their application on yarn signal's time frequency analysis.The marginal spectrum based on EMD is proposed recently and differs with traditional Fourier spectrum completely.By comparison with the Fourier spectrum,it shows that the Hilbert marginal spectrum is more suitable for processing the non-stationary signal of yarn. |
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| Keywords: | testing yarn signal spectrum analysis wave spectrum Hilbert marginal spectrum empirical mode decomposition |
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