Patents by Inventor Timothy Matthew Trifilo

Timothy Matthew Trifilo 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, system, and program product for feedback control of a target system utilizing imposition of a periodic modulating signal onto a command signal
    Patent number: 7224138
    Abstract: Feedback control of a target system is provided which utilizes the imposition of a periodic modulating signal onto a command signal of a controller. The command signal with the period modulating signal imposed thereon is input to the target system to be controlled. A response of the target system to a manifestation of the periodic modulating signal in the command signal is detected, and a feedback signal is produced from the detected response. The periodic modulating signal and the feedback signal are processed together to produce an error signal, and the command signal is modified in accordance with the error signal to drive the current state of the target system toward a desired state, wherein the periodic modulating signal facilitates control of the target system.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: May 29, 2007
    Assignee: International Business Machines Corporation
    Inventors: Casimer M. DeCusatis, Timothy Matthew Trifilo, Lawrence Jacobowitz
  • Method, system, and program product for feedback control of a target system utilizing imposition of a periodic modulating signal onto a command signal
    Patent number: 7106021
    Abstract: Feedback control of a target system is provided which utilizes the imposition of a periodic modulating signal onto a command signal of a controller. The command signal with the period modulating signal imposed thereon is input to the target system to be controlled. A response of the target system to a manifestation of the periodic modulating signal in the command signal is detected, and a feedback signal is produced from the detected response. The periodic modulating signal and the feedback signal are processed together to produce an error signal, and the command signal is modified in accordance with the error signal to drive the current state of the target system toward a desired state, wherein the periodic modulating signal facilitates control of the target system.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: September 12, 2006
    Assignee: International Business Machines Corporation
    Inventors: Casimer M. DeCusatis, Timothy Matthew Trifilo, Lawrence Jacobowitz