Patents by Inventor Ramakrishna Vijayakumar

Ramakrishna Vijayakumar 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).

  • System and method for controlling an electric power steering motor
    Patent number: 10464595
    Abstract: Systems and methods for controlling an electric power steering (EPS) motor of an EPS system of a vehicle are provided. A steering rack position sensor detects a linear position of a steering rack linear of the EPS system and a suspension travel sensor detects a suspension travel of the vehicle. An EPS controller has a processor and a memory. The EPS controller is configured to control the current draw of the EPS motor. The EPS controller is further configured to determine an EPS motor output torque based on the linear position of the steering rack and the suspension travel, and to limit the current draw of the EPS motor based on the EPS motor output torque.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: November 5, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ramakrishna Vijayakumar, George E. Doerr
  • SYSTEM AND METHOD FOR CONTROLLING AN ELECTRIC POWER STEERING MOTOR
    Publication number: 20190016375
    Abstract: Systems and methods for controlling an electric power steering (EPS) motor of an EPS system of a vehicle are provided. A steering rack position sensor detects a linear position of a steering rack linear of the EPS system and a suspension travel sensor detects a suspension travel of the vehicle. An EPS controller has a processor and a memory. The EPS controller is configured to control the current draw of the EPS motor. The EPS controller is further configured to determine an EPS motor output torque based on the linear position of the steering rack and the suspension travel, and to limit the current draw of the EPS motor based on the EPS motor output torque.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 17, 2019
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ramakrishna Vijayakumar, George E. Doerr