Modeling a process using a composite model comprising a plurality of regression models
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United States of America Patent
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Oct 4, 2011
Grant Date -
Jul 10, 2008
app pub date -
Jan 4, 2007
filing date -
Jan 4, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A system for detecting abnormal operation of at least a portion of a process plant includes a composite model for modeling at least the portion of the process plant. The model may be configurable to include multiple regression models corresponding to multiple different operating regions of the portion of the process plant. A new model may be generated from two or more of the regression models, and the composite model may be revised to replace the two or more regression models with the new model. The system may also include a deviation detector configured to determine if the actual operation of the portion of the process plant deviates significantly from the operation predicted by the composite model. If there is a significant deviation, this may indicate an abnormal operation.
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