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Method and system for determining and compensating for a faulty wheel speed input signal in a vehicle control system

  • US 5,642,280 A
  • Filed: 02/03/1995
  • Issued: 06/24/1997
  • Est. Priority Date: 02/03/1995
  • Status: Expired due to Term
First Claim
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1. A method for determining and compensating for a faulty vehicle wheel speed input signal in a vehicle control system, the method comprising the steps of:

  • (a) generating wheel speed input signals based on the rotary speed of a corresponding number of wheels of the vehicle;

    (b) computing a corresponding wheel speed based on each wheel speed input signal;

    (c) defining a window of acceptable wheel speeds based on the computed wheel speeds;

    (d) determining if the computed wheel speed of one of the wheels lies outside the window of acceptable wheel speeds;

    repeating steps (a) through (d) for a predetermined number of consecutive time periods; and

    if the computed wheel speed of the one of the wheels lies outside of the window of acceptable wheel speeds for each of the predetermined number of consecutive time periods, then processing the computed wheel speeds of the other wheels together, excluding the computed wheel speed of the one of the wheels which lies outside the window, to obtain at least one resultant signal; and

    utilizing the at least one resultant signal in the vehicle control system to control the vehicle.

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