20 Problem A.5.16 Ogata 4edition (Response to function)

Let's plot the response of close-loop system to input with following open-loop transference function:








Program in Scilab:

s=%s;

num=2;

den=s*(s+1);

gr=syslin('c',num/den);

cr=gr/. 1;

t=0:0.01:10;

r1=(1/2)*t^2;

c1=csim(r1,t,cr);

clf;

plot2d(t,c1,2);

plot2d(t,r1,3);

xtitle('Close-loop system response to input r(t)=(1/2*t^2) ','t(seg)','Amplitude');

legends(['Input','Output'],[3,2],opt=4)

xgrid;