System and method for controlling vehicle sliding door
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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Abstract
A system and method for controlling a vehicle sliding door driven by an electric motor. The method includes generating a periodic signal representing a door position, measuring first and second pluralities of signal periods such that errors in the periodic signal are minimized, comparing the first and second pluralities of signal periods, and generating a motor control signal operative to deactivate the motor when the second plurality of signal periods exceed a selected percentage of the first plurality of signal periods. A system for carrying out the method is also disclosed.
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Citations
16 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for controlling a vehicle sliding door driven by an electric motor powered by a battery, the system comprising:
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means for 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; means for generating a plurality of signal pulses in response to movement of the door; means for processing the plurality of signal pulses to determine a door speed and a door position; means for 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; means for counting a first set of the plurality of signal pulses, the first set having a first time period associated therewith; means for counting a second set of the plurality of signal pulses, the second set having a second time period associated therewith; means for comparing the first time period to the second time period; and means for generating a motor control signal operative to deactivate the motor when the first time period exceeds a selected percentage of the second time period. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification