Data processing: generic control systems or specific application – Generic control system – apparatus or process – Optimization or adaptive control
Reexamination Certificate
2008-09-30
2011-10-04
Jarrett, Ryan (Department: 2121)
Data processing: generic control systems or specific application
Generic control system, apparatus or process
Optimization or adaptive control
C700S127000
Reexamination Certificate
active
08032236
ABSTRACT:
A technique is disclosed for asymmetrically controlling a process parameter based upon the direction of a prediction error between a predicted value determined using an inferential model and a laboratory measurement of the parameter. The present technique provides for the adaptive biasing of the predicted value based upon the direction of the prediction error. In one embodiment, a biasing factor may be determined by filtering the prediction error, such that the prediction error is emphasized more heavily in the biasing factor if the prediction error is in a less tolerable direction and emphasized less heavily if the prediction error is in the opposite direction. The biasing factor may further be determined as a function of a previous biasing factor computed during the process. Asymmetric control of the process parameter may be performed by controlling the parameter using model predictive control techniques based on the biased predicted values of the parameter.
REFERENCES:
patent: 4228775 (1980-10-01), Schweikert
patent: 4474154 (1984-10-01), Henning et al.
patent: 5950668 (1999-09-01), Baumann
Collete, III L. Paul
Hoch David G.
Stephenson Brian Kent
Fletcher Yoder LLP
Jarrett Ryan
Miller John M.
Rockwell Automation Technologies Inc.
Walbrun William R.
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