Patent ID: 8022653

Claim:
A circuit arrangement (SA) for controlling movement of an electrically driven unit ( 2 ), such as a window winder or a sunroof of a motor vehicle, the arrangement comprising: a jamming protection system in which a correlation quantity (K) for an adjusting force of the unit ( 2 ) is measured and an adjusting movement is stopped or reversed in order to prevent jamming if the correlation quantity (K) for the adjusting force exceeds a limiting value (fg) that corresponds to a predetermined jamming force; a filter ( 140 ) is provided for filtering the correlation quantity (K) for the adjusting force of the unit ( 2 ), characterized in that the filter ( 140 ) is controllable by means of at least one accompanying filter parameter ( 142 , 143 ), wherein an alternating-signal component of the measured correlation quantity (K) or of another parameter proportional thereto is determined, and the filter parameter ( 142 , 143 ) is controllable depending on this alternating-signal component.