Patents by Inventor Tien-Li Chia

Tien-Li Chia 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).

  • Apparatus and method for model-based control for integrating processes
    Patent number: 7949415
    Abstract: Various methods and systems for the parametric control of a process include representing the process with a process model used to generate future predictions of a process variable. In one embodiment, the process exhibits integrating behavior that is represented by a non-integrating process model. In another embodiment, an inverse of the model is filtered using a filter that includes a lead time constant that is selected to minimize a steady state error of the predicted process variable. In yet another embodiment, an array of output model values is revised or reindexed in response to a change in a time-varying parameter related to the process.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: May 24, 2011
    Assignee: ControlSoft, Inc.
    Inventors: Tien-Li Chia, Irving Lefkowitz, Coleman B Brosilow
  • APPARATUS AND METHOD FOR MODEL-BASED CONTROL
    Publication number: 20100138004
    Abstract: Various methods and systems for the parametric control of a process include representing the process with a process model used to generate future predictions of a process variable. In one embodiment, the process exhibits integrating behavior that is represented by a non-integrating process model. In another embodiment, an inverse of the model is filtered using a filter that includes a lead time constant that is selected to minimize a steady state error of the predicted process variable. In yet another embodiment, an array of output model values is revised or reindexed in response to a change in a time-varying parameter related to the process.
    Type: Application
    Filed: December 9, 2009
    Publication date: June 3, 2010
    Applicant: ControlSoft, Inc.
    Inventors: Tien-Li Chia, Irving Lefkowitz, Coleman B. Brosilow
  • Apparatus and method for model-based control
    Patent number: 7653445
    Abstract: Various methods and systems for the parametric control of a process include representing the process with a process model used to generate future predictions of a process variable. In one embodiment, the process exhibits integrating behavior that is represented by a non-integrating process model. In another embodiment, an inverse of the model is filtered using a filter that includes a lead time constant that is selected to minimize a steady state error of the predicted process variable. In yet another embodiment, an array of output model values is revised or reindexed in response to a change in a time-varying parameter related to the process.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: January 26, 2010
    Assignee: ControlSoft, Inc.
    Inventors: Tien-Li Chia, Irving Lefkowitz, Coleman B. Brosilow, Alireza Haji-Valizadeh, Shahid Parvez, John T. Nagle
  • APPARATUS AND METHOD FOR MODEL-BASED CONTROL
    Publication number: 20080255814
    Abstract: Various methods and systems for the parametric control of a process include representing the process with a process model used to generate future predictions of a process variable. In one embodiment, the process exhibits integrating behavior that is represented by a non-integrating process model. In another embodiment, an inverse of the model is filtered using a filter that includes a lead time constant that is selected to minimize a steady state error of the predicted process variable. In yet another embodiment, an array of output model values is revised or reindexed in response to a change in a time-varying parameter related to the process.
    Type: Application
    Filed: April 13, 2007
    Publication date: October 16, 2008
    Inventors: Tien-Li Chia, Irving Lefkowitz, Coleman B. Brosilow, Alireza Haji-Valizadeh, Shahid Parvez, John T. Nagle