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:
Feb. 26, 2008
Filed:
Jun. 19, 2003
Wilhelm Wojsznis, Austin, TX (US);
Terrence Blevins, Round Rock, TX (US);
Mark Nixon, Round Rock, TX (US);
Peter Wojsznis, Cedar Park, TX (US);
Wilhelm Wojsznis, Austin, TX (US);
Terrence Blevins, Round Rock, TX (US);
Mark Nixon, Round Rock, TX (US);
Peter Wojsznis, Cedar Park, TX (US);
Fisher-Rosemount Systems, Inc., Austin, TX (US);
Abstract
An optimization technique for use in driving a process plant controller, such as a model predictive controller, uses an organized, systematic but computationally simple method of relaxing or redefining manipulated, control and/or auxiliary variable constraints when there is no feasible optimal solution within pre-established constraints, to thereby develop an achievable solution for use by the controller. The optimization routine uses penalized slack variables and/or redefines the constraint model in conjunction with the use of penalty variables to develop a new objective function, and then uses the new objective function to determine a control solution that bests meets the original constraint limits.