Patent ID: 6163747
Filing Date: 2000-12-19
Classification: B60T,B60W

Abstract:
A road friction coefficient detecting apparatus of a vehicle having a vehicle motion data detecting means for detecting lateral motion indicative data of said vehicle and a road surface condition data detecting means for detecting road surface condition indicative data, comprising:a vehicle data calculating means for calculating parameters to estimate respective cornering powers of front and rear wheels of said vehicle according to an equation of motion on the basis of said lateral motion indicative data;a road friction coefficient estimating means for estimating said cornering powers of front and rear wheels based on said parameters and for calculating a road friction coefficient estimated value based on said cornering powers; anda tire characteristic initial value judging means for estimating a road surface condition based on said road surface condition indicative data when it is judged that said vehicle starts up after a long period of rest and for outputting a signal to establish an initial value of said parameters to said vehicle data calculating means.