Anti-lock control system

An anti-lock control system for improving comfort and shortening braking distances in automotive vehicles having wheel sensors, a monitoring circuit which recognizes overbraking conditions of the wheels based on signals from the sensors and produces corresponding control signals, and a pressure modulator which, by means of the control signals, sets the brake pressures on the vehicle wheels;

• the anti-lock control system further comprising:
• a pressure function generator which is responsive to the monitoring circuit and which, for each wheel, determines the brake pressure whenever wheel overbraking has been detected as an upper reference pressure (Pein);
• determines a brake pressure at which the wheel again accelerates, after pressure reduction by the pressure modulator in a pressure reduction phase, as a lower reference point (Pbeschl);
• and thereupon, in a pressure build-up phase, controls the pressure modulator so as to increase the wheel brake pressure from a start point (PsAnf) between the upper and lower reference pressure points over the entire pressure build-up phase initially in accordance with an exponential function approaching an asymptote and thereafter as a quasi-exponential function crossing said asymptote.