Wind vibration noise evaluation method and system and vehicle

The invention relates to the field of sound analysis. The invention discloses a wind vibration noise evaluation method and system and a vehicle. The method comprises the steps of collecting wind vibration noise data of the vehicle under a preset driving working condition in a preset environment; con...

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Bibliographische Detailangaben
Hauptverfasser: ZHOU WANTIAN, YE BIN, LONG LIANGHUO, JIANG CAIMAO, ZHANG LIN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to the field of sound analysis. The invention discloses a wind vibration noise evaluation method and system and a vehicle. The method comprises the steps of collecting wind vibration noise data of the vehicle under a preset driving working condition in a preset environment; converting the wind vibration noise data to obtain self-power spectrum data; identifying the amplitudefrequency of the self-power spectrum data, and segmenting a frequency slice with a specified bandwidth from the self-power spectrum data by taking the amplitude frequency as a center; generating a total amplitude independent variable relation curve according to the frequency slices, wherein independent variables are time or speed, and the total amplitude refers to the sum of amplitudes of all frequencies corresponding to the independent variables in the frequency slices; determining a wind vibration peak value according to the total amplitude independent variable relation curve, and determining evaluation data accordi