Some final control elements, such as traditional butterfly valves and air dampers have highly non-linear flow characteristics.
Tuning these loops is challenging since the process response changes depending on the position of the non-linear final control element.
Using a live simulation, this webinar will explain and characterize these non-linearities and how to ‘undo’ them using characterizers on the output of the PID algorithm.
Does your Output have Character? Characterizing the Output