Process for influencing the parameters of a car's dynamic behavior

Abstract

To set the brake or traction slip of a wheel at the maximum of the frictional value/slip curve, it is necessary that the wheel sensor associated with each wheel to sense its rotational speed is in a state of operation. Otherwise it is not possible to ascertain the slip of the respective wheel. In order to ensure an emergency function for influencing driving dynamics parameters even in the event of malfunction of a wheel sensor, the present invention discloses performing a two-point control when a wheel sensor is defective. A first operating point (A) lies at a longitudinal slip equal to zero, and a second operating point (B) lies at a longitudinal slip of 100%. Without a longitudinal slip, lateral forces can be transmitted to their maximum, whereas at 100% longitudinal slip longitudinal forces can still be transmitted almost to their maximum.

Dependencies are inferred from the claim text.