Patents by Inventor Bernard J. Christ

Bernard J. Christ 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 servo motor retuning method and system
    Patent number: 6658370
    Abstract: A method and system are invented for adaptively and automatically retuning a closed-loop servo motor that is operating within normal limits. A first active set of configurable tuning constants is assigned to the servo motor, and motor performance is periodically measured to determine if performance is outside a retuning threshold, in which case the active set of configurable tuning constants is replaced by selecting a replacement set of tuning constants from a finite group of discrete predesigned sets of tuning constants. Actual performance of the servo motor is remeasured, and this process is repeated if the performance remains outside the retuning threshold. The predesigned sets of tuning constants are derived and stored in the servo motor software, typically as a result of pretesting the servo motor model by the manufacturer, for example using manual retuning.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: December 2, 2003
    Assignee: Pitney Bowes Inc.
    Inventors: Bernard J. Christ, Egbert E. Most, Peter K. Zanger
  • Adaptive servo motor retuning method and system
    Publication number: 20030036812
    Abstract: A method and system are invented for adaptively and automatically retuning a closed-loop servo motor that is operating within normal limits. A first active set of configurable tuning constants is assigned to the servo motor, and motor performance is periodically measured to determine if performance is outside a retuning threshold, in which case the active set of configurable tuning constants is replaced by selecting a replacement set of tuning constants from a finite group of discrete predesigned sets of tuning constants. Actual performance of the servo motor is remeasured, and this process is repeated if the performance remains outside the retuning threshold. The predesigned sets of tuning constants are derived and stored in the servo motor software, typically as a result of pretesting the servo motor model by the manufacturer, for example using manual retuning.
    Type: Application
    Filed: August 15, 2001
    Publication date: February 20, 2003
    Applicant: Pitney Bowes Incorporated
    Inventors: Bernard J. Christ, Egbert E. Most, Peter K. Zanger