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Vehicle traction controller/road friction and hill slope tracking system

  • US 5,033,002 A
  • Filed: 06/11/1990
  • Issued: 07/16/1991
  • Est. Priority Date: 06/11/1990
  • Status: Expired due to Term
First Claim
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1. A traction control method for a vehicle having an engine, wheels, an axle, a throttle, and brakes, the vehicle being driven on a road surface having a coefficient of friction and at least one hill slope, the method comprising the steps of:

  • generating a first disturbance value related to the slope of the hill;

    generating a second disturbance value related to the coefficient of friction of the road surface;

    summing said first and second disturbance values to generate a feedforward control value; and

    controlling the level of vehicle traction in response to said feedforward control value by controlling the engine and the wheels.

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