A control system is shown : C is controller, P is process being controlled, F is feedback scaler - which could represent measurement.
I is command input, D is disturbance input and O is the output, which is fedback: Aim O = I/F despite effects of D.
Move sliders to change values of I and D and see how O changes as a result.
Click on C, P and F blocks to change their gains, and see how these affect O.
Plots of O vs I and O vs D are shown: When you move sliders, you see where you are on the graph.
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