Analysis of Road Surface Roughness and Vibration Response Through Wavelet Transform

Relationship between vehicular vibration response and road surface roughness is analyzed through wavelet transform. Time series of road roughness is established by the ARMA model according to road specimens and a 1/2 vehicle ride model is established. Vibration response is analyzed with time series as the input. Excitation of the road and the response of the vehicle vibration are analyzed by wavelet transform. The results indicate that the time and frequency characteristics of the signal can well be revealed and the relation of vehicle vibration response and road surface roughness can be identified by wavelet transform. So the ride quality of the vehicle can be analyzed by road characteristics and the road excitation can be deduced by vibration response.