Patents by Inventor Ebrahim Handy

Ebrahim Handy 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).

  • Method for managing faults in a magneto-rheological hydraulic power steering system
    Patent number: 8392069
    Abstract: A system and method for managing faults occurring in a power steering system in a vehicle is disclosed that has particular application for an MRHPS system to provide reliable functioning of the power steering system. The method includes detecting a fault condition in the MRHPS system and selecting a safe mode from a plurality of predetermined safe modes based on the fault condition. The plurality of predetermined safe modes include a normal operation mode, an engine speed follow mode, a manual mode, a fixed duty cycle mode and a voltage control mode. If a fault condition is detected, the method applies the safe mode to manage the fault condition.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: March 5, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Balarama V. Murty, Suresh Gopalakrishnan, Kenneth J. Shoemaker, Chandra S. Namuduri, Bradley Bezzina, Ebrahim Handy
  • METHOD FOR MANAGING FAULTS IN A MAGNETO-RHEOLOGICAL HYDRAULIC POWER STEERING SYSTEM
    Publication number: 20120130594
    Abstract: A system and method for managing faults occurring in a power steering system in a vehicle is disclosed that has particular application for an MRHPS system to provide reliable functioning of the power steering system. The method includes detecting a fault condition in the MRHPS system and selecting a safe mode from a plurality of predetermined safe modes based on the fault condition. The plurality of predetermined safe modes include a normal operation mode, an engine speed follow mode, a manual mode, a fixed duty cycle mode and a voltage control mode. If a fault condition is detected, the method applies the safe mode to manage the fault condition.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Balarama V. Murty, Suresh Gopalakrishnan, Kenneth J. Shoemaker, Chandra S. Namuduri, Bradley Bezzina, Ebrahim Handy
  • Pump speed command generation algorithm for magnetorheological power steering coupling
    Patent number: 8150579
    Abstract: A method for determining a speed of a power steering pump used in a power steering assembly of a vehicle that has particular application in a vehicle using a magneto-rheological hydraulic power steering (MRHPS) system for improving the fuel efficiency and ride comfort of the vehicle, and for reliable functioning of the power steering system. The method includes determining an angle of rotation of the steering wheel and a rate of change of the angle of rotation of the steering wheel based on the angle of rotation of the steering wheel of the vehicle. The method further includes determining the speed of the vehicle and the speed of the power steering pump based on the angle of rotation of the steering wheel, the rate of change of the angle of rotation of the steering wheel and the speed of the vehicle.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: April 3, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Balarama V. Murty, Suresh Gopalakrishnan, Kenneth J. Shoemaker, Chandra S. Namuduri, Bradley Bezzina, Ebrahim Handy
  • PUMP SPEED COMMAND GENERATION ALGORITHM FOR MAGNETORHEOLOGICAL POWER STEERING COUPLING
    Publication number: 20100250069
    Abstract: A method for determining a speed of a power steering pump used in a power steering assembly of a vehicle that has particular application in a vehicle using a magneto-rheological hydraulic power steering (MRHPS) system for improving the fuel efficiency and ride comfort of the vehicle, and for reliable functioning of the power steering system. The method includes determining an angle of rotation of the steering wheel and a rate of change of the angle of rotation of the steering wheel based on the angle of rotation of the steering wheel of the vehicle. The method further includes determining the speed of the vehicle and the speed of the power steering pump based on the angle of rotation of the steering wheel, the rate of change of the angle of rotation of the steering wheel and the speed of the vehicle.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 30, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATION, INC.
    Inventors: Balarama V. Murty, Suresh Gopalakrishnan, Kenneth J. Shoemaker, Chandra S. Namuduri, Bradley Bezzina, Ebrahim Handy