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Adaptive system and method for controlling vehicle window operation

  • US 5,483,135 A
  • Filed: 06/06/1994
  • Issued: 01/09/1996
  • Est. Priority Date: 06/06/1994
  • Status: Expired due to Term
First Claim
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1. An adaptive system for controlling a vehicle window having an open position, a closed position, and an electric motor, the system comprising:

  • means for detecting a motor stall;

    a position counter having a count representing a window position;

    means for setting, independent of a dedicated motor actuation input signal, a first historical limit equal to the count when the window is driven by the motor toward the closed position an a motor stall is detected;

    means for setting, independent of a dedicated motor actuation input signal, the first historical limit equal to the difference between the first historical limit and the count, and the count equal to a second historical limit, respectively, when the window is driven by the motor toward the open position and a motor stall is detected;

    means for generating an error signal when the count exceeds the first historical limit by a selected amount and the window is driven by the motor toward the closed position, the error signal operative to reverse operation of the motor such that the first historical limit and the count may be reset by the means for setting the first historical limit and the count;

    means for generating a first control signal operative to halt operation of the motor when the count equals the first historical limit; and

    means for generating a second control signal operative to halt operation of the motor when the count equals the second historical limit.

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