Process control system

Details Process control system Process control system

2007-09-04

2007-09-04

Pham, Thomas K. (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

Reexamination Certificate

active

11019208

ABSTRACT:
The disclosed process control system makes use of Optimal control (OC) and model predictive control (MPC) techniques for selection of the Expert Systems (ES) targets values U. The ES target values U are selected to minimize the performance criterion J. A mathematical model of an extended system given by the process P and the ES is developed. This hybrid mathematical model has both continuous dynamics and logical relationships. Controlled variables of the mathematical model are the ES target values U and inputs are the measurements y and the performance criterion J. The OC and/or MPC techniques are used to compute values U. An optimizer of the OC/MPC selects values of the ES target values U only. This activity has lower sampling rates than selection of controller values, which simplifies the design of the OC/MPC controller.

REFERENCES:
patent: 5347446 (1994-09-01), Iino et al.
patent: 5351184 (1994-09-01), Lu et al.
patent: 6056781 (2000-05-01), Wassick et al.
patent: 6373033 (2002-04-01), de Waard et al.
patent: 6438430 (2002-08-01), Martin et al.
patent: 6823675 (2004-11-01), Brunell et al.
patent: 6925338 (2005-08-01), Eryurek et al.
patent: 2003/0028265 (2003-02-01), Martin
patent: 2005/0137721 (2005-06-01), Attarwala
European Search Report dated May 12, 2004 in European Appln. No. 04405017.7.
Ilgen et al., “Expert System as an Operator Interface for Advanced Controls,”Proceedings of the Industrial Computing Conference, Chicago, Sep. 19, 1993, pp. 265-276, vol. 3, ISA, USA.
Hagemoen, “An Expert System Application for Lime Kiln Automation,”Pulp and Paper Industry Technical Conference, 1993, Jun. 21, 1993, pp. 91-97, Conference Record of 1993 Annual Hyannis, MA, IEEE, NY, NY.
Clark, “Expertly Controlled,”World Cement, Jan. 2002, vol. 33 No. 1, Switzerland.
Bemporad et al., “Control of systems integrating logic, dynamics, and constraints,”Automatica 35, 1999, pp. 407-427, Elsevier Science Ltd.

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