Patents by Inventor VALARIE V. BOATMAN

VALARIE V. BOATMAN 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).

  • Methods and systems for estimating road surface friction coefficient using self aligning torque
    Patent number: 10272919
    Abstract: Methods and systems for determining road surface information in a vehicle. In one embodiment, the method includes: determining at least one condition assessment value based on steering data; determining a feature set to include at least one of self-aligning torque (SAT), slip angle, SAT variance, steering rate, and lateral acceleration based on the condition assessment value; processing steering data obtained during a steering maneuver and associated with the feature set using a pattern classification technique; and determining a surface type based on the processing.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: April 30, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, LLC
    Inventors: Youssef A. Ghoneim, Qingrong Zhao, Qi Zhang, Bakhtiar B. Litkouhi, Yingmei Si, David M. Sidlosky, Valarie V. Boatman, Sami Ahmed
  • METHODS AND SYSTEMS FOR ESTIMATING ROAD SURFACE FRICTION COEFFICIENT USING SELF ALIGNING TORQUE
    Publication number: 20160101782
    Abstract: Methods and systems for determining road surface information in a vehicle. In one embodiment, the method includes: determining at least one condition assessment value based on steering data; determining a feature set to include at least one of self-aligning torque (SAT), slip angle, SAT variance, steering rate, and lateral acceleration based on the condition assessment value; processing steering data obtained during a steering maneuver and associated with the feature set using a pattern classification technique; and determining a surface type based on the processing.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 14, 2016
    Inventors: YOUSSEF A. GHONEIM, QINGRONG ZHAO, QI ZHANG, BAKHTIAR B. LITKOUHI, YINGMEI SI, DAVID M. SIDLOSKY, VALARIE V. BOATMAN, SAMI AHMED
  • Methods and systems for vehicle control during braking of the vehicle
    Patent number: 8634994
    Abstract: Methods and systems are provided for vehicle control during braking for vehicles having a transmission gear movable between at least a drive position and a neutral position. A wheel speed sensor measures a wheel speed of the wheel. A controller is coupled to the wheel speed sensor. The controller calculates a parameter using the wheel speed, and shifts the transmission gear from the drive position to the neutral position if the parameter exceeds a predetermined threshold. The parameter is indicative of a load on a component of the vehicle.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: January 21, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Patrick J. Monsere, Eric E. Krueger, Alexander K. Rustoni, Valarie V. Boatman
  • METHODS AND SYSTEMS FOR VEHICLE CONTROL DURING BRAKING OF THE VEHICLE
    Publication number: 20120046840
    Abstract: Methods and systems are provided for vehicle control during braking for vehicles having a transmission gear movable between at least a drive position and a neutral position. A wheel speed sensor measures a wheel speed of the wheel. A controller is coupled to the wheel speed sensor. The controller calculates a parameter using the wheel speed, and shifts the transmission gear from the drive position to the neutral position if the parameter exceeds a predetermined threshold. The parameter is indicative of a load on a component of the vehicle.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 23, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: PATRICK J. MONSERE, ERIC E. KRUEGER, ALEXANDER K. RUSTONI, VALARIE V. BOATMAN