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System and method for controlling vehicle sliding door

  • US 5,708,338 A
  • Filed: 11/03/1995
  • Issued: 01/13/1998
  • Est. Priority Date: 11/03/1995
  • Status: Expired due to Term
First Claim
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1. A method for controlling a vehicle sliding door driven by an electric motor powered by a battery, the method comprising:

  • generating a motor control signal operative to activate the motor such that motor imparts a first selected force to the door and moves the door;

    generating a plurality of signal pulses in response to movement of the door;

    processing the plurality of signal pulses to determine a door speed and a door position;

    generating a motor control signal at a selected door position operative to activate the motor such that the motor imparts a second selected force to the door, the motor control signal being based on the door speed;

    counting a first set of the plurality of signal pulses, the first set having a first time period associated therewith;

    counting a second set of the plurality of signal pulses, the second set having a second time period associated therewith;

    comparing the first time period to the second time period; and

    generating a motor control signal operative to deactivate the motor when the second time period exceeds a selected percentage of the first time period.

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