Method of detection anticipates multiple axes of the emerging parasitic noise on a component of a motor vehicle.

摘要

Method of detecting the anticipated from the appearance of parasitic noises on at least one point of the control of a component of a motor vehicle comprising the steps of the calculation for each point of control of said component, of the spatial coherence between the various axes of the assembly of the vibratory signals of the excitation time available (setd) (100); determining for each axis of each point of control of said component, of a profile of the vibration frequency excitation generic (pefg) from the spectral envelope of the transposed setd (200); for the generation, for each axis of each point of control of the component and in taking account of the spatial coherence of a vibratory signal of the excitation time of the random generic (seatg) from the pefg (300); to be applied simultaneously on each said axis of each point of control of said component, said seatg corresponding by means of a test bench multi - axes (400); and the detection of any parasitic noises (500).