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Method for determining a wheel brake pressure

  • US 5,732,378 A
  • Filed: 06/07/1995
  • Issued: 03/24/1998
  • Est. Priority Date: 11/25/1994
  • Status: Expired due to Fees
First Claim
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1. In an automotive vehicle having a velocity and a plurality of wheels, each wheel having an angular velocity and a brake which is operable by applying a pressure agent to the brake, a method for controlling the brakes, comprising the steps of:

  • (a) determining amounts of the pressure agent to be applied to, or released from, each respective brake, individually, to implement a desired braking operation;

    (b) calculating an estimated vehicle velocity and an estimated wheel angular velocity which result from applying the respective amounts of the pressure agent to the brakes; and

    (c) determining the velocity of the vehicle and the angular velocity of the wheels by measuring at least one of the velocity and the angular velocity, and determining the other one of the velocity and the angular velocity based on the measurement;

    (d) performing a comparison between;

    (1) the velocity determined in step (c) and the estimated vehicle velocity, or(2) the angular velocity determined in step (c) and the estimated wheel angular velocity, respectively; and

    (e) adjusting the amounts of the pressure agent to be applied to, or released from, each respective brake, based on the comparison.

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