Method and apparatus for intelligent control and monitoring in a process control system
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United States of America Patent
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Oct 11, 2011
Grant Date -
Apr 30, 2009
app pub date -
Sep 26, 2008
filing date -
Oct 4, 2005
priority date (Note) -
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Abstract
A controller includes a control module to control operation of a process in response to control data, a plug-in module coupled to the control module as a non-layered, integrated extension thereof, and a model identification engine. The plug-in detects a change in the control data, and a collects the control data and data in connection with a condition of the process in response to the detected change. The model identification engine executes a plurality of model parameter identification cycles. Each cycle includes simulations of the process each having different simulation parameter values and each using the control data as an input, an estimation error calculation for each simulation based on an output of the simulation and based on the operating condition data, and a calculation of a model parameter value based on the estimation errors and simulation parameter values used in the simulation corresponding to each of the estimation errors.
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