Control package

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Revision as of 00:58, 8 January 2013 by Andy1978 (talk | contribs) (added basic low-pass step response)
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The control package is part of the Octave Forge project.

Some very basic examples

PT1/low-pass filter step response

T1=0.4;               # time constant
P=tf([1], [T1 1])     # create transfer function model
step(P,2)             # plot step response
#add some common markers like tangent at the origo which crosses lim(n->inf) f(t) at t=T1
hold on
plot ([0 T1],  [0 1],"g")
plot ([T1 T1],  [0 1],"k")
plot ([0 T1],  [1-1/e 1-1/e],"m")
hold off

Pt1.png

Try also bode(P)! (a first order low-pass filter has -3db magnitude at f=1/T1)