EMD-based vibration signal rotation speed identification method
The invention discloses a vibration signal rotating speed identification method based on EMD, and belongs to the technical field of signal identification, and the method comprises the following steps: S1, obtaining an original acceleration signal of equipment vibration; s2, carrying out preprocessin...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a vibration signal rotating speed identification method based on EMD, and belongs to the technical field of signal identification, and the method comprises the following steps: S1, obtaining an original acceleration signal of equipment vibration; s2, carrying out preprocessing and high-pass filtering on the acceleration signal, and removing a high-frequency structure resonant frequency signal; s3, EMD decomposition is carried out on the preprocessed signals; s4, selecting intrinsic mode function components related to the original signal, and performing signal reconstruction on the selected related intrinsic mode function components; s5, performing integration on the reconstructed signal, and performing FFT after integration to obtain a reconstructed speed spectrum; s6, performing smooth filtering on the reconstructed velocity spectrum to obtain a velocity average energy spectrum; and S7, subtracting the velocity average energy spectrum from the reconstructed velocity spectrum to obtain |
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