| 摘要 |
Method for limiting the closing force of movable components (16), in particular windows and sliding roofs in vehicles. Said windows and roofs are powered by an electric motor driven servo drive (11). Said inventive method comprises at least the following steps: determination of the actual motor rotation speed n by evaluating periodic signals from a sensor (18) connected to a servo drive (11); calculation of a typical parameter DELTA n which reflects a change in motor rotation speed. Summation and saving of an actual typical parameter DELTA n in a sum storage device (24); starting of a timing device (28) and a threshold sensor (30), in the event that the summed parameter value totals exceed a parameter SIGMA DELTA n threshold value; comparison of an actual threshold value g(t) with an actual, summed parameter value SIGMA DELTA n; triggering of a mechanism to limit the closing force and resetting of the timing device (28) and the summed value storage device (30), if the respective current value of the summed parameters SIGMA DELTA n are the same as or equal to or larger than the respective current threshold value g(t); termination of the comparing procedure and resetting of said timing device (28) in addition to the summed value memory (30), if the respective value of the summed parameter SIGMA DELTA n is smaller than the respective current threshold value gj(t) and is within a predefined tolerance DELTA and additionally, a predefined time unit DELTA t remains constant.
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