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Laplace.T Root-locus Transient response Frecuency response
       
 
 
 

21 Program 7.5 OGATA 4edition (Parallel compensator, velocity-feedback compensator)

We will draw a response to a step input for the values of $K=0.4490$ y $K=1.4130$ by Scilab, the closed-loop system is:

\begin{displaymath}G(s)=\frac{20}{s\cdot (s+1) \cdot (s+4)+20\cdot(1+K\cdot s)}\end{displaymath}




Program in Scilab:
s=%s;
k1=0.4490;
g1=20/(s*(s+1)*(s+4)+20*(1+k1*s));
k2=1.4130;
g2=20/(s*(s+1)*(s+4)+20*(1+k2*s));
t=0:0.1:10;
y1=csim('step',t,g1);
y2=csim('step',t,g2);
clf;
plot(t,y1,'k');
plot(t,y2,'b');
xgrid;
xtitle('Response to unit-step','t','Output');
legend(['K=0.4490';'K=1.4130'],style=4);
Image Programa7_5pag455

 

cajael