Power vehicle door with reversal control

Details Power vehicle door with reversal control Power vehicle door with reversal control

1993-05-20

1995-03-07

Ip, Paul

Electricity: motive power systems

Motor-reversing

Periodic- or intermittent-reversing

318286, 318266, H02P 320

Patent

active

053961587

ABSTRACT:
A motor driven power door control system for a vehicle door includes a door position sensor that generates a door position signal for each predetermined distance of door movement so that the period of the door position signal is a measure of door speed. The motor control voltage is variably controlled to a controlled value to establish the door speed at a desired speed value. A door position signal period stall time is determined that is a predetermined function of the controlled value of the motor control voltage so that the stall time is adapted to the motor torque. An obstructive load is indicated when the period of the door position signal exceeds the stall time.

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