该方法通过对原始数据加入随机白噪声分量,使不同区域脉搏信号保持完整性,克服了传统EMD分解不能有效解决模态混叠(Mode Mixing,MM)的问题。
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西微所--微电机杂志 关键词:超声波电机;定子;设计参数;交互作用;模态混叠 [gap=616]Key Words: Ultrasonic motor;Stator;Design parameter;Interaction;Modal-aliasing
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An application into the harmonic wave detecting shows that OEMD successfully conquers mode aliasing,avoids the occurrence of fault mode,and is featured by fast computing speed,and can achieve harmonic wave detection accurately.
在谐波检测中的应用实例表明,OEMD不仅较好地克服了模态混叠和避免了虚假模态的出现,而且运算速度快,能实现精确的谐波检测。
参考来源 - 正交经验模态分解及其快速实现·2,447,543篇论文数据,部分数据来源于NoteExpress
针对在经验模态分解(EMD)筛选过程中间断信号引起的模态混叠问题,提出了一种新的解决方法。
Aiming at the mode mixing problem caused by intermittency signal in the sifting process of empirical mode decomposition (EMD), a new solution is presented.
HHT刚提出不久,其理论本身还存在不少问题,如包络线和均值曲线的拟合、边界效应和模态混叠等问题。
HHT has not been put forward for long time, so it contains some theoretical problems, such as envelop and mean curve fit, boundary effect, modes mix and so on.
讨论了由于间歇信号嵌入导致经验模式分解结果出现模态混叠的现象,指出极值点序列幅值突变是产生模态混叠的根本原因。
The reason to mode mixing in the result of empirical mode decomposition is discussed in respect of the variation of extremum series.
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