Applet shows the Bode plot of 2nd order type 0 and 1 systems with PD control.

The eg parameters (10.0, 1.0, 0.5, 0.0, 1.0, 1.0) show the Bode plot with P control and the resulting transient oscillations. The phase margin for type 0 ~ 40°, and for type 1 ~ 20°. The eg parameters (10.0, 1.0, 0.5, 0.01, 1.0, 1.0) shows the effect of adding D control. A zero is added at s = 100 and a break point at w = 100. Parameters (10.0, 1.0, 0.5, 0.4, 1.0, 1.0) show the phase margin for type 0 increasing to ~95° and for type 1 to ~ 70° with a reduction of the transient oscillations.

Gif image below show how the applet should appear.

COPYRIGHT © 2006 Cuthbert Nyack.