April 2022 Technical Seminar

Characterizing Control Valves for Better Control

About our topic:

Often, engineers struggle with the remnants of past design decisions, cost cutting, and just plain misunderstanding of how control algorithms, process equipment and final control elements affect the economic performance of a facility.  The challenge is knowing how to handle the system you’re given. Some knowledge of process flow dynamics can enable the engineer to tune a standard Proportional/ Integral/ Derivative, PID, algorithm and maintain good control and performance.

The intent of this presentation is to show how, by re-characterizing a control valve’s installed Cv flow characteristics to linear, a PID controller will need only one set of tuning parameters to control a process; even if the underlying process flow dynamics are non-linear.

About our presenter:

Jim Key, P.E.. Southern Company Services

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