Patents by Inventor Todd Maras

Todd Maras 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).

  • Patent number: 11467543
    Abstract: A method for designing and tuning a PID process controller includes approximating a process as a second order process but in a manner that includes the effects or characteristics introduced by various different devices in the I/O network, and using a lambda tuning method to determine tuning parameters or coefficients for the PID controller. The enhanced controller design and tuning method provides a systematic manner of achieving performance improvement of PID controllers within a process control system and is effective at overcoming challenges arising from signal aliasing, the use of anti-aliasing filtering and the effects of different I/O settings of both traditional and advanced I/O marshalling architectures.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: October 11, 2022
    Assignee: FISHER-ROSEMOUNT SYSTEMS, INC.
    Inventors: Shu Xu, Mark J. Nixon, James Beall, Terrence L. Blevins, Todd Maras
  • Publication number: 20210088982
    Abstract: A method for designing and tuning a PID process controller includes approximating a process as a second order process but in a manner that includes the effects or characteristics introduced by various different devices in the I/O network, and using a lambda tuning method to determine tuning parameters or coefficients for the PID controller. The enhanced controller design and tuning method provides a systematic manner of achieving performance improvement of PID controllers within a process control system and is effective at overcoming challenges arising from signal aliasing, the use of anti-aliasing filtering and the effects of different I/O settings of both traditional and advanced I/O marshalling architectures.
    Type: Application
    Filed: September 20, 2019
    Publication date: March 25, 2021
    Inventors: Shu Xu, Mark J. Nixon, James Beall, Terrence L. Blevins, Todd Maras