METHOD FOR POSITIONING A CLOSING SURFACE WHICH IS ACTUATED BY AN EXTERNAL FORCE

摘要

The invention is based on a method for the contactless approaching of an upp er stop position (A) outfitted with a seal (5) by a window pane (1) of a motor vehicle actuated by external force. When an upper window-pane edge (2) approaches the stop position (A), a control signal is generated by a control unit (26), by way of which the electric drive is switched off in a shutoff position (11) p a, and/or its driving direction is reversed, so that the upper window-pane edge (2) comes to a standstill at a zero position (10) p0. When the window pane (1) approaches t he stop position (A), system parameters (S1 ... S n) are detected by sensors (2 7) and stored in a memory (28). A system state SZ (S1 - S n) dependent on the syste m parameters (S1 ... S n) is read out with the shutoff position (11) p a from a characteristic diagram. A difference .DELTA.SZ is determined by comparing th e respective current system states (SZ cur (S1- S n) and the reference system state SZ ref (S1 ... S n) stored in the memory (28). A new shutoff position (11.1) p anew is calculated based on the deviation .DELTA.SZ determined.