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In the webinar, George Buckbee, Head of Performance Solutions presents seven methods to analyze controller variability. Each method provides insights into one or more aspects of control performance.
Control system typically represents as much as 10% of the full cost of a new process plant. With such a big investment, you might like to know if the control system is doing its job. It would seem a simple thing to monitor variability and answer that question. One could simply calculate the standard deviation of each variable every hour and determine if the control system is doing its job. But it turns out that such a simple solution is of limited value.