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Time-varying MFA Controller

The Time-Varying MFA controller is used to control a process with large time constant and/or delay variations. For instance, a temperature control loop usually has a shorter time constant when it heats up and a much longer time constant when it cools down because adding heat to the process is much faster than taking it away. Also, a line speed or flow rate change can cause the process delay time to vary significantly.

Time-varying MFA Controller Configuration

As shown in the following graph, the Time-varying MFA controller can be configured with an estimated minimum and maximum process time constant plus delay time. The controller is able to deal with large time constant and/or delay time changes without having to re-tune any parameters.

Time-varying MFA controller configuration menu



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