Patents by Inventor Douglas James Spry

Douglas James Spry 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).

  • Prognostics system for detecting wear in encoders used to sense wheel speed in vehicles
    Patent number: 11860125
    Abstract: A system for detecting wear in an encoder used to sense a wheel speed in a vehicle comprises a sensor configured to sense the wheel speed of the vehicle by sensing a magnetic material on the encoder coupled to a wheel of the vehicle. A noise detection module includes a plurality of noise detectors configured to detect noise in a wheel speed signal generated by the sensor. An estimation module is configured to estimate a state of health of the encoder based on the noise detected in the wheel speed signal and to generate an alert in response to the state of health indicating that an amount of wear on the encoder is greater than a predetermined threshold. A filter is configured to filter the noise in the wheel speed signal and to output a filtered wheel speed signal to a control system controlling stability of the vehicle.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: January 2, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mohit Batra, Jasmeet Singh Ladoiye, Milad Alekajbaf, Douglas James Spry
  • PROGNOSTICS SYSTEM FOR DETECTING WEAR IN ENCODERS USED TO SENSE WHEEL SPEED IN VEHICLES
    Publication number: 20220365030
    Abstract: A system for detecting wear in an encoder used to sense a wheel speed in a vehicle comprises a sensor configured to sense the wheel speed of the vehicle by sensing a magnetic material on the encoder coupled to a wheel of the vehicle. A noise detection module includes a plurality of noise detectors configured to detect noise in a wheel speed signal generated by the sensor. An estimation module is configured to estimate a state of health of the encoder based on the noise detected in the wheel speed signal and to generate an alert in response to the state of health indicating that an amount of wear on the encoder is greater than a predetermined threshold. A filter is configured to filter the noise in the wheel speed signal and to output a filtered wheel speed signal to a control system controlling stability of the vehicle.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 17, 2022
    Inventors: Mohit BATRA, Jasmeet Singh Ladoiye, Milad Alekajbaf, Douglas James Spry