Root locus on LyME

[Spidersmoke]

Hello,
I would like to be able to draw root locus for continuous and discrete
time systems, but i can't figure how.
With state-space equations, can it be done?
Where can i find algorithms for that?
Thank you for your help.

[Ramon]

Hi

The root locus diagram shows the evolution of the closed loop system
poles when varying a certain parameter, usually a gain (proportional
controller).
In a siso system this can be done intrinsically. In a generic
state-space equations system this is not straightforward unless the
system has one input
and one output.
If this is the case you can drawn the same root locus by constructing
the transfer function and then drawing the root locus.

(num,den) = ss2tf(A,B,C,D)
rlocus(num, den);

best wishes,
Ramon

[Spidersmoke]

Yes, but...

the main thing is LyME doesn't have a rlocus function.

Where can i find a library with that (and more) control functions?

Thank you again,

Spidersmoke.