Patents by Inventor Keith W. Beyer

Keith W. Beyer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Model based brake pressure estimation
    Patent number: 6508522
    Abstract: A method and apparatus are provided for estimating brake pressure in a disk brake caliper, on the basis of a simplified mathematical model. The simplified model is limited to operating conditions in which the caliper piston is holding the brake pads in contact with the rotor, wherein higher order terms and certain fluid dependent terms of the model can be eliminated, thereby simplifying the model to the point that it can be readily used in an effective and efficient manner for estimating fluid pressure in the cylinder of the caliper. The displacement of the piston is estimated while the piston is holding the brake pad in contact with the rotor, as a function of an exchange of fluid between the pressure source and the cylinder. The brake pressure in the cylinder is determined as a function of the displacement of the piston while the piston is holding the brake pad in contact with the rotor.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: January 21, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Qingyuan Li, Quan Zheng, Keith W. Beyer