| 经验模态分解中虚假模态分量消除法 |
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| 引用本文： | 黄迪山.经验模态分解中虚假模态分量消除法[J].振动．测试与诊断,2011,31(3). |
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| 作者姓名： | 黄迪山 |
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| 作者单位： | 上海大学机电工程与自动化学院,上海,200072 |
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| 摘 要： | 基于能量原理,提出经验模态分解(EMD)中虚假模态分量消除方法.在正常采样的条件下,分析信号EMD分解误差与虚假模态分量的关系,讨论虚假模态分量的性质.从EMD分解的完备性角度考虑在虚假模态存在情况下能量不守恒,给出模态函数消除法,从EMD分解结果中剔出虚假模态分量,消除信号经验模态分解误差.其有效性在所给例子中得到证实.
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| 关 键 词： | 信号 经验模态分解 虚假模态分量 误差 消除 |
Effect of Sampling on Empirical Mode Decomposition and Correction |
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| Huang Dishan.Effect of Sampling on Empirical Mode Decomposition and Correction[J].Journal of Vibration,Measurement & Diagnosis,2011,31(3). |
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| Authors: | Huang Dishan |
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| Affiliation: | Huang Dishan (School of Mechatronics Engineering and Automation,Shanghai University Shanghai,200072,China) |
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| Abstract: | A method for cancelling pseudo mode function in empirical mode decomposition(EMD) is presented based on energy conservation.The properties of pseudo mode function are investigated on the relation between EMD error and the pseudo mode function under normal sampling.Using the completeness,energy conservation and properties of EMD,the principle of mode function cancellation is proposed for ticking out the pseudo mode functions from the decomposition results and cancelling the error in the intrinsic mode functi... |
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| Keywords: | signal empirical mode decomposition(EMD) pseudo mode function error cancellation |
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