Method for active compensation of oscillations in a machine which processes printing material, and a machine which processes printing material

A machine for processing printing materials, the machine comprising:

• a regulating device for actively compensating for oscillations in the machine, said regulating device being programmed to:
• measure at least one signal containing an uncompensated oscillation of the machine or of a part of the machine;
• compare at least one measure of a ratio between an amplitude of the uncompensated oscillation and an amplitude of a counter torque necessary for complete compensation with a threshold value;
• determine the counter torque to be introduced on a basis of a first functional relationship with the uncompensated oscillation if the measure is greater than the threshold value;
• determine the counter torque to be introduced on a basis of a second functional relationship with the uncompensated oscillation if the measure is smaller than the threshold value, the second functional relationship being different than the first functional relationship;
• and
• introduce the counter torque into the machine for reducing the uncompensated oscillation;
• and
• if the measure for the ratio between the amplitude of the uncompensated oscillation and the amplitude of the counter torque is greater than the threshold value, operating said regulating device in a first operating mode and, if the measure for the ratio between the amplitude of the uncompensated oscillation and the amplitude of the counter torque which is necessary for complete compensation is smaller than the threshold value, operating said regulating device in a second operating mode.