Patents by Inventor Hristos K. Mantjios

Hristos K. Mantjios 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 and apparatus for controlling an electric assist steering system using an adaptive torque filter
    Patent number: 5473231
    Abstract: A steering assist system (10) providing assist in response to a steering control signal includes a vehicle speed sensor (56) for sensing vehicle speed and for providing a speed signal having a value indicative of the sensed vehicle speed and a torque sensor (44) operatively connected to a vehicle hand wheel (12) for providing a torque signal indicative of applied steering torque. A controller is connected to the vehicle speed sensor (56) and to the torque sensor (44). The controller includes an adaptive torque filter (80) that maintains a selectable system bandwidth independent of gain changes and vehicle speed changes. The adaptive filter (80) recovers any gain reduction by increasing the frequency of a filter pole.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: December 5, 1995
    Assignee: TRW Inc.
    Inventors: Kevin M. McLaughlin, Stuart W. Parker, Hristos K. Mantjios