METHOD FOR DETERMINING A BRAKE PRESSURE VALUE ON THE BASIS OF CHARACTERISTIC CURVES

摘要

The invention relates to a method for determining the brake pressure value of the brake pressure in a braking device of a motor vehicle without using a brake pressure sensor said brake pressure being controlled by a pneumatic channel (12) of a braking value provider (10) that also has at least one electrical channel (14) wherein electrical signals representing desired brake pressure values are produced by at least one electrical sensor associated with the electrical channel in accordance with actuations of the brake value provider (10) wherein a) a first characteristic curve (28) is determined and stored in which the dependency of the electrical signals controlled by the at least one electrical sensor of the electrical channel (14) on the degree of actuation of the brake value provider (10) is represented and b) a second characteristic curve (30) is determined and stored in which the dependency of the brake pressure values controlled by the at least one pneumatic channel (12) on the electrical signals detected by the electrical sensor is represented wherein c) the brake pressure value corresponding to a certain brake request by actuation of the brake value provider (10) is determined on the basis of the first characteristic curve (28) and the second characteristic curve (30).