| EMD新算法及其应用 |
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| 引用本文： | 刘霖雯,刘超,江成顺. EMD新算法及其应用[J]. 系统仿真学报, 2007, 19(2): 446-447,464 |
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| 作者姓名： | 刘霖雯 刘超 江成顺 |
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| 作者单位： | 信息工程大学信息工程学院,河南郑州,450002 |
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| 基金项目： | 国家自然科学基金;河南省高校杰出科研创新人才工程项目 |
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| 摘 要： | 经验模态分解（ENID）算法是Hilbert-Huang变换（HHT）的核心算法，它的分解效果依赖于包络线的生成算法和端点延拓算法。采用分段幂函数插值算法求包络成。结合一种改进的端点延拓算法。得到了一种新的EMD算法。分析了分段幂函数插值算法的收敛精度。从数学角度解释了选取该插值算法的原因．最后，结合一个股票模型的仿真结果说明新的EMD算法效果更好。
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| 关 键 词： | HHT算法 EMD分解 信号处理 插值算法 |
| 文章编号： | 1004-731X（2007）02-0446-02 |
| 收稿时间： | 2005-10-24 |
| 修稿时间： | 2005-10-242006-02-21 |
Novel EMD Algorithm and Its Application |
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| LIU Lin-wen,LIU Chao,JIANG Cheng-shun. Novel EMD Algorithm and Its Application[J]. Journal of System Simulation, 2007, 19(2): 446-447,464 |
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| Authors: | LIU Lin-wen LIU Chao JIANG Cheng-shun |
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| Affiliation: | Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China |
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| Abstract: | Empirical mode decomposition (EMD), the core of Hilbert-Huang transformation, is reckoned on the algorithm of the extrama extending and generation of envelope curves. With the piecewise power function and an improved algorithm of extrama extending, a novel EMD algorithm was proposed. An error estimation of the piecewise power function interpolation was proposed to show the advantage of this algorithm. At last, a simulation on a stock model is presented to show that this novel EMD algorithm is more applicable to analyze the nonlinear and non-stationary signal than the previous EMD algorithm. |
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| Keywords: | HHT algorithm EMD decomposition signal processing interpolation algorithm |
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