05682309 is referenced by 80 patents and cites 14 patents.

A system controls a plant process which includes manipulated variables (e.g. input states) and control variables (e.g. output states). The system includes sensor circuitry for providing measures of the control variables and a memory for storing a correction time constant and upper and lower limits for at least one control variable. The upper and lower limits are separated by a band of values within which the one control variable is considered to be acceptable. A processor includes data describing a process model which relates costs of manipulated variables to control variables and, upon solution, further provides predicted values for the one control variable. Logic within the processor is responsive to a measured value function of the one control variable being outside the band of values, to determine minimum cost manipulated variables which result in a return of the predicted value of the one control variable to within the acceptable band of values. Control instrumentalities within the plant are operative to alter the manipulated variables (and input states) in accordance with signals from the processor.

Title
Feedback method for controlling non-linear processes
Application Number
8/431244
Publication Number
5682309
Application Date
April 28, 1995
Publication Date
October 28, 1997
Inventor
Robert William Fontaine
Houston
TX, US
Raymond Donald Bartusiak
Houston
TX, US
Agent
Linda K Russell
Assignee
Exxon Chemical Patents
DE, US
IPC
G05B 13/04
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