Control package
Revision as of 05:31, 23 September 2015 by Rezahousseini (talk  contribs) (→Linear System Representation)
The control package is part of the Octave Forge project.
Contents
Function list
Linear System Representation
Chapter  Function  Implemented  File  Status 

Basic Models  tf  yes   
yes   
yes  
Model Interconnection
Model Transformation
Linear Analysis
Control Design
Matrix Computations
Some very basic examples
PT1/lowpass filter step response
Code: Creating a transfer function and plotting its 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 the tangent line at the origin, 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], [11/e 11/e],"m")
hold off

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