Using autocorrelation to detect model mismatch in a process controller
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United States of America Patent
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Feb 27, 2018
Grant Date -
Aug 30, 2012
app pub date -
May 7, 2012
filing date -
Jan 31, 2008
priority date (Note) -
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Abstract
A process controller adaptation and tuning technique uses a closed loop adaptation cycle that performs an autocorrelation analysis on the prediction error or the control error of a process control system to determine if significant process model mismatch exists or to determine an increase or a decrease in process model mismatch over time. The adaptation and tuning technique may perform a controller tuning cycle when the determined model mismatch raises above a predetermined level.
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