Patents by Inventor Ganga P. Jayaraman

Ganga P. Jayaraman 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).

  • Patent number: 10074245
    Abstract: The subject matter of this specification can be embodied in, among other things, a motion control apparatus that includes a brushless DC motor to actuate a mechanical output based on a collection of phase power signals, a collection of first Hall effect sensors configured to provide a collection of first feedback signals in response to a sensed motor position and a sensed motor speed, a controller configured to determine a speed and position of the motor based on the feedback signals, and determine an electrical current level based on a collection of operational parameters and feedback signals including a position of the mechanical output, the motor speed, and the motor position, a current controller configured to provide electrical phase sequence output signals based on the electrical current level, and a motor driver configured to provide the collection of phase power signals based on the electrical phase sequence output signals.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: September 11, 2018
    Assignee: Woodward, Inc.
    Inventors: Ganga P. Jayaraman, Michael L. Lyles, Zenon P. Szulyk, Bryan R. Haack
  • Publication number: 20180197385
    Abstract: The subject matter of this specification can be embodied in, among other things, a motion control apparatus that includes a brushless DC motor to actuate a mechanical output based on a collection of phase power signals, a collection of first Hall effect sensors configured to provide a collection of first feedback signals in response to a sensed motor position and a sensed motor speed, a controller configured to determine a speed and position of the motor based on the feedback signals, and determine an electrical current level based on a collection of operational parameters and feedback signals including a position of the mechanical output, the motor speed, and the motor position, a current controller configured to provide electrical phase sequence output signals based on the electrical current level, and a motor driver configured to provide the collection of phase power signals based on the electrical phase sequence output signals.
    Type: Application
    Filed: January 10, 2017
    Publication date: July 12, 2018
    Inventors: Ganga P. Jayaraman, Michael L. Lyles, Zenon P. Szulyk, Bryan R. Haack
  • Patent number: 8872508
    Abstract: A half-bridge variable differential transformer position sensing system that includes a transducer having a stator with an inductive coil having a center tap configured to provide an output signal. The transducer also has an armature with a magnetically permeable core configured to move within the inductive coil, such that movement of the magnetically permeable core causes a change in the output signal. The position sensing system includes a first circuit configured to provide an excitation signal at one terminal of the inductive coil. The system includes no more than three electrical interface wires, and a microcontroller configured to calculate the degree of change in the position of the magnetically permeable core, and is configured to correct for variations in the voltage of the output signal due to the temperature of the transducer and due to non-linear effects on the output signal caused by movement of the magnetically permeable core.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: October 28, 2014
    Assignee: Woodward MPC, Inc.
    Inventors: Zenon P. Szulyk, Ganga P. Jayaraman, Brian M. Hahn
  • Patent number: 8814103
    Abstract: A aircraft control system is provided that provides tactile feedback between control columns of the aircraft relating to discrepancies in the control inputs to the sticks of the respective control columns. In one implementation, the sticks each have an associated feedback assembly that is adjustable relative to mechanical ground to adjust the feedback profile applied to the corresponding stick. The position of each feedback assembly is adjusted based on a relative displacement between the other feedback assembly and its corresponding stick to provide active feedback relating to the control of the other control column.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: August 26, 2014
    Assignee: Woodward MPC, Inc.
    Inventors: Zenon P. Szulyk, Ganga P. Jayaraman, Charles C. Frayman, Brian P. Dyra, Darryl S. Stachniak
  • Publication number: 20120176124
    Abstract: A half-bridge variable differential transformer position sensing system that includes a transducer having a stator with an inductive coil having a center tap configured to provide an output signal. The transducer also has an armature with a magnetically permeable core configured to move within the inductive coil, such that movement of the magnetically permeable core causes a change in the output signal. The position sensing system includes a first circuit configured to provide an excitation signal at one terminal of the inductive coil. The system includes no more than three electrical interface wires, and a microcontroller configured to calculate the degree of change in the position of the magnetically permeable core, and is configured to correct for variations in the voltage of the output signal due to the temperature of the transducer and due to non-linear effects on the output signal caused by movement of the magnetically permeable core.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 12, 2012
    Applicant: WOODWARD MPC, INC.
    Inventors: Zenon P. Szulyk, Ganga P. Jayaraman, Brian M. Hahn
  • Publication number: 20120025029
    Abstract: A aircraft control system is provided. that provides tactile feedback between control columns of the aircraft relating to discrepancies in the control inputs to the sticks of the respective control columns. In one implementation, the sticks each have an associated feedback assembly that is adjustable relative to mechanical ground to adjust the feedback profile applied to the corresponding stick. The position of each feedback assembly is adjusted based on a relative displacement between the other feedback assembly and its corresponding stick to provide active feedback relating to the control of the other control column.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 2, 2012
    Applicant: WOODWARD MPC, INC.
    Inventors: Zenon P. Szulyk, Ganga P. Jayaraman, Charles C. Frayman, Brian P. Dyra, Darryl S. Stachniak