Method for evaluating the instantaneous frequency of a mechanical excitation applied to a motor vehicle wheel, in order to improve the control of motor vehicle suspension elements

摘要

Method is based on measurement of observable parameters (Zrel) linked to the instantaneous height of the chassis and or the vehicle wheels. The method also involves filtration (FILT) generating successive estimation (Zc, Zr) of the instantaneous height of the chassis and the wheel, a method for extraction of temporal displacement (DECAL) and a procedure (ESTIM) for estimating the frequency producing the required evaluation of the frequency (f) based on the estimated values for the temporal displacement.