User`s guide

rlocus
11-183
the closed-loop poles are the roots of
rlocus adaptively selects a set of positive gains to produce a smooth plot.
Alternatively,
rlocus(sys,k)
uses the user-specified vector k of gains to plot the root locus.
When i nvoked with output arguments,
[r,k] = rlocus(sys)
r = rlocus(sys,k)
return the vector k of selected gains and the complex root locations r for these
gains. The matrix
r has length(k) columns and its jth column lists the
closed-loop roots for the gain
k(j).
Example Find and plot the root-locus of the following system.
ds
()
kns
()+
0
=
k