2 Program 6.2 OGATA 4edicion (root locus)

Laplace.T	Root-locus	Transient response	Frecuency response

2 Program 6.2 OGATA 4edicion (root locus)

Let us calculate the root-locus of a closed-loop system with feedback by Scilab, whose transfer function in open loop is:

$\begin{displaymath}G(s)=\frac{K}{(s^{4}+1.1\cdot s^{3}+10.3\cdot s^{2}+5\cdot s)}\end{displaymath}$
Program in Scilab
num=poly([1 0 0 0 0],'s','coeff');
den=poly([0 5 10.3 1.1 1],'s','coeff');
g=syslin('c',num/den);
clf;
evans(g);
v=[-6 6 -6 6];
mtlb_axis(v)
xgrid