Drive device and method for moving a vehicle part
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United States of America Patent
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Oct 14, 2003
Grant Date -
N/A
app pub date -
Jun 20, 2001
filing date -
Sep 3, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process for adjusting a motor vehicle part between at least two positions, the motor vehicle part being driven by an electric motor, pulse signals being generated according to the rotary motion of the electric motor and being supplied to a control unit for controlling the electric motor, in the first computation (50) with a first parameter set the first value for the instantaneous force acting on the motor vehicle part is determined from the acquired pulse signals at certain first instants. Parallel to the first computation, in at least the second computation (52) with a second parameter set which differs from the first parameter set the second value for the instantaneous force acting on the motor vehicle part is determined from the acquired pulse signals at certain second instants, the two values being considered for the instantaneous action of the force in order to decide whether the electric motor is turned off or reversed or not. Furthermore the invention relates to a corresponding device for executing this process.
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