Patent ID: 7612515

Claim:
A method for identifying pinching situations in a motor-driven displacing device, the method comprising: determining, during a displacing process along an actuating direction, values (W(n) to (W(n−m)) of a motor current of the motor-driven displacing device; storing the values; determining, from the stored values, a quantity ( 8 ) that characterises a pinching force of the displacing device, wherein the motor-driven displacing device is stopped or the actuating direction of the motor-driven displacing device is reversed, if the quantity ( 8 ), that characterises the pinching force, exceeds a predetermined initiated threshold; and generating differences from at least two stored values (W(n) to W(n−m)) stored during the displacing process along the actuating direction; wherein each of the differences is multiplied by an associated weighting factor k and that the quantity ( 8 ), which characterises the pinching force of the displacing device, is computed by addition to differences multiplied by an associated weighting factor k.