文章基本信息

标题：A New Signal Feature Extraction Method - Fractal dimensions of Time- Frequency Domain
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作者：Yuan Yu ; Wang TingYu ; Li Baoliang 等
期刊名称：International Journal of Computer Information Systems and Industrial Management Applications
印刷版ISSN：2150-7988
电子版ISSN：2150-7988
出版年度：2010
卷号：2
页码：155-162
出版社：Machine Intelligence Research Labs (MIR Labs)
摘要：In this paper, vibration signal multifractal method was researched, multifractal on time-frequency domain was an energy fractal and the signal feature extraction was based on the analysis of its energy distributing. The method analysed signal on time- frequency domain to characterize the distributing of its frequency or energy, and the signal's feature was extracted by fractal dimension. After the signal was changed to time-frequency domain by Hilbert-Huang transform, general dimension Dq would be calculated from the signal in time-frequency domain by least square method. In the end, examples of emulator and practical application proved that this integrated method was feasible.
关键词：multifractal; Hilbert-Huang transform; ; general dimension