SICH ANPASSENDES BREMSSYSTEM FUER FAHRZEUGE MIT RAEDERN, INSBESONDERE KRAFTFAHRZEUGE

An adaptive braking system for wheeled vehicles, such as automobiles, uses signals proportional to wheel speed to control braking during incipient wheel skid conditions. A capacitor whose decay rate is controlled is used to memorize a signal correlated to wheel speed. Generally, the memorized signal will be maintained at a fixed offset at a value less than an instantaneous wheel speed signal. After braking pressure is applied the instantaneous wheel speed may drop more rapidly than the memory capacitor can follow. If the instantaneous wheel speed signal drops through the memorized signal, braking pressure is attenuated. The memorized signal will now track the instantaneous wheel speed signal downward maintaining a further fixed offset where the memorized signal is greater than the instantaneous wheel speed signal. In response to the attenuated braking pressure wheel speed will increase while the memorized signal will continue to decay at its predetermined schedule so that eventually the instantaneous wheel speed signal will exceed the memorized signal at which time braking pressure will be restored. With the instantaneous speed signal now greater than the memorized signal, the memorized signal will track the instantaneous speed signal at the first mentioned offset.