Method for determining actual steering ratio at front wheels of two-lane motor car for performing automatic parking, involves determining correction factor for steering ratio using deviation between actual steering angle and given target

摘要

The method involves determining a correction factor for a steering ratio using a deviation between an actual steering angle and a given target. A front wheel steering angle is determined on basis of difference of rotation speeds of two front wheels of a vehicle. The correction factor is determined using speed signals of rear wheels and/or the front wheels of the vehicle corrected by a tire allowance alignment. Correction factors for forward motion and reverse motion of the vehicle are individually determined and stored.