METHOD FOR REDUCING JUDDERING VIBRATIONS IN A FRICTION CLUTCH IN A DRIVE TRAIN OF A MOTOR VEHICLE

摘要

The invention relates to a method for reducing juddering vibrations of a friction clutch (3) that is automatically controlled by a clutch actuator on the basis of a target clutch torque (M(s)) associated with a clutch torque to be transmitted and arranged in a drive train of a motor vehicle between an internal combustion engine and a gear mechanism, having an actual clutch torque (M(i)) that is vibration-affected due to intermittently occurring vibrations. From a transmission behavior of the actual clutch torque (M(i)), an absolute amplitude and a phase of an input signal detected at the output of the friction clutch (3) and transmitted to a control unit (5) are detected. Therefrom, a phase-selective interference torque is determined, wherefrom a phase-correct correction torque (M(k)) is determined, by means of which the target clutch torque (M(s)) is corrected using the control unit (5). In order to be able to configure the method in a robust manner, the correction torque (M(k)) is weighted with a predefined amplification factor.