Window lifter for a vehicle and method for operating such a window lifter
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United States of America Patent
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Oct 3, 2017
Grant Date -
Dec 31, 2015
app pub date -
Jun 29, 2015
filing date -
Jun 28, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
For the purpose of realizing an operationally reliable window lifter (opener) for a vehicle, there is provision to ascertain from an operating variable of a servomotor in each case a measure of a regulated position of the window pane in the course of a plurality of operating cycles of the window lifter in which a window pane of the vehicle is opened and closed again, in each case entirely or partly. In each operating cycle, or at least in selected operating cycles, the measure is normalized to a reference value if at the end of the respective operating cycle the window pane is driven by the servomotor for at least a predetermined blocked time beyond a blocked position. The blocked time is shortened if the normalization was not carried out for a predetermined number of consecutive operating cycles.
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