The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2005
Filed:
Apr. 19, 2002
Wilhelm K. Wojsznis, Round Rock, TX (US);
Terrence L. Blevins, Round Rock, TX (US);
Dirk Thiele, Austin, TX (US);
John A. Gudaz, Bel Air, MD (US);
Wilhelm K. Wojsznis, Round Rock, TX (US);
Terrence L. Blevins, Round Rock, TX (US);
Dirk Thiele, Austin, TX (US);
John A. Gudaz, Bel Air, MD (US);
Fisher-Rosemount Systems, Inc., Austin, TX (US);
Abstract
An adaptive process controller drives a process variable to be substantially equivalent to a set point and adapts the controller gain, the controller reset, and/or the controller rate, based on model free adaptation. The adaptive controller combines a controller gain computed from an oscillation index with a controller gain computed from a steady state estimate and that adapts the controller reset/rate by forcing the ratio of two of the controller proportional, integral or derivative terms to be equal to a predetermined value.