Patents by Inventor Douglas E. Kyr

Douglas E. Kyr 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).

  • Windup and noise protection of digital controllers in a layered control
    Patent number: 5980080
    Abstract: Anti-windup and noise protection that can be used with any general digital controller. The anti-windup technique allows the implementation of noise filtering techniques to decrease or eliminate chatter of the control output at the limit. In a higher order controller that uses a feedforward signal, the anti-windup technique prevents an unexpected change in the control output when a step change occurs in the feedforward signal. The technique can be used to provide anti-windup protection in both single layer and multi-layer control schemes.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: November 9, 1999
    Assignee: Elsag International N.V.
    Inventors: Kenneth A. Loparo, Gregory Khrapunovich, Douglas E. Kyr, Thomas J. Scheib