PD and Tachometer Control 2P 0T1, T1T2 Step Response and Bode Plot

Cuthbert Nyack
The Applet below compares PD and Tachometer control in the frequency domain using a Bode plot. It shows the zero of the PD controller increasing the bandwidth and speeding up the response thus reducing the rise time. The step response and its relation to the Bode plot is illustrated.
The parameter values (4.0, 1.0, 0.44, 0.58, 0.5, 2.0), (27.0, 1.0, 0.26, 0.78, 0.2, 2.0) illustrates the early time response, the location of the zero on the Bode plot and the increased bandwidth of the PD controlled system.

Gif image below show how the applet should appear.

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COPYRIGHT 2006 Cuthbert Nyack.