Patents by Inventor Brandon P. Davis

Brandon P. Davis 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).

  • Determining rotor position offset for electrical machines
    Patent number: 11973444
    Abstract: A method of calibrating an electrical machine to determine an angular offset between a motor sensor indicated position and an actual rotor position, including the steps of: supplying electrical current to stator windings; identifying a quadrant of a rotor where a rotor pole is located; approximating a line between a torque value measured at a lower angular boundary of the identified quadrant and a torque value measured at an upper angular boundary of the identified quadrant; and determining an angular offset by locating an angular position where torque exerted by the rotor is zero.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: April 30, 2024
    Assignee: BORGWARNER INC.
    Inventors: Siddharth Ballal, Arslan Qaiser, Brandon P. Davis
  • DETERMINING ROTOR POSITION OFFSET FOR ELECTRICAL MACHINES
    Publication number: 20240039442
    Abstract: A method of calibrating an electrical machine to determine an angular offset between a motor sensor indicated position and an actual rotor position, including the steps of: supplying electrical current to stator windings; identifying a quadrant of a rotor where a rotor pole is located; approximating a line between a torque value measured at a lower angular boundary of the identified quadrant and a torque value measured at an upper angular boundary of the identified quadrant; and determining an angular offset by locating an angular position where torque exerted by the rotor is zero.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 1, 2024
    Inventors: Siddharth Ballal, Arslan Qaiser, Brandon P. Davis