Abstract
By using time domain modeling obtained from PSD for stationary random road irregularities, concerning about non-uniform moving-vehicle conditions and non-stationary road characteristics, via model assembly and integration to generate non-stationary random road time domain modeling for inputting road excitation. On the assembly of the non-stationary random road time domain modeling, Time-Frequency was analyzed via wavelet analysis. From road data decomposed by the way of Wavelet, both time domain characteristics of signal components in different bands can be obtained and anomaly contained within the signal can also have accurately time-frequency localization. The signal separation can help achieving non-stationary sub-band analysis, and can further study the affection of road signal in different band focus on vibration response of the vehicle, and also providing a strong theoretical basis for road design, quality inspection and grading.
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