Implementing MPC to reduce variability by optimizing control valve response

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In this paper, a model predictive controller is configured to simultaneously manipulate a small valve and a large valve, eliminating the problems inherent in split-ranged and valve-position controllers.

By Emerson Process Management

IN INDUSTRIAL applications, two valves are often used to extend the range of loads that loops can handle. This provides the precision of control offered by the small valve with the range of control possible from the combination of the small and large valve.

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