METHOD FOR DETERMINING THE DYNAMIC ROLLING RADIUS OF TYRES

摘要

The present invention relates to a method for improving parking precision in driver assistance systems comprising an electronic compass (30). The following method steps are performed: An electronic compass (30) is coupled to the driver assistance system. Rolling radii are calibrated on tyres (20, 22) mounted on the vehicle (10) on the basis of path pulses (36, 38), a track width (24) and a distance d_WIC covered per wheel pulse (36, 38). A change in angle Δ φ_WIC is then determined, whereupon an absolute change in angle Δ φ_Kompass is performed using the electronic compass. Finally a corrective factor is determined for the distance covered per wheel pulse.