Adaptive system and method for controlling vehicle window operation
First Claim
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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Accused Products
Abstract
An adaptive control system and method for a vehicle window. The system and method include sensors for determining a motor current corresponding to a window position and for detecting a motor stall, and an electronic control module (ECM) for providing a position counter having a count representing the window position. The ECM is also provided for setting, independent of a dedicated motor actuation input signal, a second historical limit equal to the count when the window is driven by the motor toward the closed position and a motor stall is detected, as well as setting, independent of a motor actuation input signal, the second historical limit equal to the difference between the second historical limit and the count, and the count equal to a first historical limit, respectively, when the window is driven by the motor toward an open position and a motor stall is detected. The ECM is further provided for generating a first control signal operative to halt operation of the motor when the count equals the first historical limit, and generating a second control signal operative to halt operation of the motor when the count equals the second historical limit.
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Citations
20 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10)
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7. The system of claim wherein the means for determining a motor current comprises:
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means for detecting a motor current; means for detecting a battery voltage; means for detecting a motor temperature; and means for normalizing the detected motor current based on the detected voltage and temperature.
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11. An adaptive method for controlling a vehicle window having an open position, a closed position, and an electric motor, the method comprising:
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detecting a motor stall; providing a position counter having a count representing window position; 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; 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; 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 re-set; generating a first control signal operative to halt operation of the motor when the count equals the first historical limit; and generating a second control signal operative to halt operation of the motor when the count equals the second historical limit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification