Patents by Inventor Ian Francis Brown

Ian Francis Brown 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).

  • Servo systems
    Patent number: 4096425
    Abstract: A servo control system comprising, in a feedback loop, means for providing an error signal representing the difference between desired and actual conditions of a controlled system, and means responsive to said error signal to produce a control signal for the controlled system; the control system also comprising means for injecting a predetermined disturbance signal into the loop, and means responsive to a comparison of said disturbance signal and a loop response signal for varying gain in said loop.
    Type: Grant
    Filed: April 27, 1976
    Date of Patent: June 20, 1978
    Assignee: Ferranti Limited
    Inventors: Ian Francis Brown, Colin Keith Sharp