Patents by Inventor Nicholas W. Andrews

Nicholas W. Andrews 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).

  • Adaptive servomotor control
    Patent number: 4609855
    Abstract: A servomotor controller provides high speed servomotor positioning be means of an on line adaptive state-feedback control algorithm. Servomotor position and velocity are the feedback states and each has an associated gain selected by means of a servomotor characterization scheme. The mechanical break frequency is used to select optimum gains and a high speed estimation technique is used to determine the mechanical break frequency. Position step change may also be used to select optimum gains. Gain tables are produced by an off-line simulation technique.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: September 2, 1986
    Assignee: Motorola, Inc.
    Inventor: Nicholas W. Andrews