Brake force regulating system

Claim 1

A brake force regulating system including a fluid supply means for motor vehicles having at least one pair of axles comprising a brake pedal means (20,25), a brake regulator means (29,30) for establishing the braking moment (M B ) at the wheels of the motor vehicle, a plurality of transducers (24,33,34) for ascertaining driving-situation variables which act upon said brake regulator means, and comparing means (22,26,43) characterized in that a signal indicating a continuous desired value (Z s ) of a driving-situation variable can be prespecified by said brake pedal means, one (24) of said transducers ascertaining a driving-situation variable which represents an actual value (Z), and that the brake regulator means is controllable by said comparing means in accordance with the difference between the desired value (Z s ) and the actual deceleration value (Z), said comparing means (26) receives electrical signals from said one transducer (24) and said brake pedal means, other of said transducers (33,34) ascertaining forces (A, B, C) of the wheel suspension of said vehicle, means (42) for prespecifying a desired difference (Δμ s ) between adhesion forces (μ r , μ h ) at the axles, computing stages (35,36,37) operatively connected to said other transducers (33,34) for determining the horizontal and vertical forces (u,g) engaging the wheels as well as actual adhesion forces (μ r , μ h ) at the axles of the motor vehicle wherein said comparing means (22,43) is operatively connected to said computer stages for determining an actual difference value (Δμ) between the adhesion forces (μ r , μ h ) at the axles and to said means (42) prespecifying a desired difference for determining the deviation (Δμ) between said desired adhesion difference value (Δμ s ) and said actual difference adhesion value (Δμ) which serves to regulate brake pressure axle-by-axle.