| Hilbert-Huang变换中的一种端点延拓方法 |
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| 引用本文： | 沈路,周晓军,张志刚,张文斌. Hilbert-Huang变换中的一种端点延拓方法[J]. 振动与冲击, 2009, 28(8): 168 |
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| 作者姓名： | 沈路 周晓军 张志刚 张文斌 |
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| 作者单位： | 浙江大学,现代制造工程研究所,浙江省先进制造技术重点实验室,杭州,310027 |
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| 摘 要： | Serious end effect will be produced while the upper and lower envelope is constructed in the process of EMD. Similar extrema extension method was proposed to overcome the problem. Abscissa difference of adjacent extrema at both ends of data was considered as the shape characteristic, then the shape characteristic and average of extrema were used to extend signal. Both trend of extrema variation near boundary and rest of extrema were considered in similar extrema extension, while only the extrema near boundary was used to extend signal in current
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| 关 键 词： | Hilbert-Huang变换 相似极值延拓 端点效应 经验模式分解 |
Boundary-extension method in Hilbert-Huang transform |
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| SHEN Lu,ZHOU Xiao-jun,ZHANG Zhi-gang,ZHANG Wen-bin. Boundary-extension method in Hilbert-Huang transform[J]. Journal of Vibration and Shock, 2009, 28(8): 168 |
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| Authors: | SHEN Lu ZHOU Xiao-jun ZHANG Zhi-gang ZHANG Wen-bin |
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| Abstract: | |
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| Keywords: | HHT similar extrema extension end effect EMD |
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