REAL-TIME ROAD SURFACE IDENTIFICATION BASED ON WHEEL VIBRATION
Shijing Wu · Zhendong yu chongji · 2008
A road surface identification method is presented based on wheel vibration due to road surface roughness.Firstly,a wheel vibration model is analyzed,the wheel vibration can reflect the road surface roughness,i.e.the type of road.Then,using wavelet and FFT,analysis of the high frequency wheel vibration of all kinds of road is performed and the frequency spectrum characteristics are gained.Thus,according to the frequency spectrum characteristics,a road fuzzy classifier is built to identify road.In numerical simulations for blacktop and mattess road surfaces,the road identification accuracy reaches 95%.