Cascaded control of an average value of a process parameter...

Details Cascaded control of an average value of a process parameter... Cascaded control of an average value of a process parameter...

2006-10-03

2006-10-03

Barnes, Crystal J (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

C700S029000, C700S033000, C700S036000, C700S037000, C700S044000, C700S048000, C700S051000, C700S108000, C700S267000, C700S272000, C700S273000, C700S008000, C702S031000, C702S032000, C702S084000, C702S182000, C702S199000, C706S021000, C706S023000, C422S172000, C422S262000, C423S243110

Reexamination Certificate

active

07117046

ABSTRACT:
At least one of the multiple process parameters (MPPs) is a controllable process parameter (CTPP) and one is a targeted process parameter (TPP). The process also has a defined target limit (DTV) representing a first limit on an actual average value (AAV) of the TPP. A first logical controller predicts future average values (FAVs) of the TPP based on the AAVs of the TPP over a first prior time period and the DTV. A second logical controller establishes a further target limit (FTV) representing a second limit on the AAV of the TPP based on one or more of the predicted FAVs, and also determines a target set point for each CTPP based on the AAVs of the TPP over a prior time period and the FTV. The second logical controller directs control of each CTPP in accordance with the determined target set point.

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