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System and method for detecting an abnormal situation associated with a process gain of a control loop

  • US 20060020423A1
  • Filed: 06/09/2005
  • Published: 01/26/2006
  • Est. Priority Date: 06/12/2004
  • Status: Active Grant
First Claim
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1. A method for monitoring operation of a control loop in a process plant, comprising:

  • collecting process gain data associated with a first operating region of a control loop in a process plant, the control loop associated with a unit operation in the process plant;

    determining an expected process gain behavior in the first operating region based on the collected process gain data;

    monitoring the process gain during operation of the control loop in the first operating region;

    determining when the monitored process gain substantially deviates from the expected process gain behavior in the first operating region; and

    determining an abnormal situation associated with at least one of the control loop or the unit operation based at least on a substantial deviation from the expected process gain behavior in the first operating region.

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