Patents by Inventor Harrison D. Pham

Harrison D. Pham 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).

  • Velocity determination system and method
    Patent number: 10884012
    Abstract: The embodiments described herein include a method and system for determining velocity and a motor controller implementing such velocity determination. In one embodiment, a rotatable element has a digital encoder coupled thereto for determining discrete angular positions of the rotatable element. An amount of time for the rotatable element to rotate between two successive ones of the discrete angular positions is measured. The amount of time is converted to a rotational velocity determination of the rotatable element.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: January 5, 2021
    Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Aaron M. Hulse, Harrison D. Pham, Stanley Lewis