15 Problem A.5.11 Ogata 4edition (response to unit-step and unit-ramp)

Let's plot the system's response to unit-step and unit-ramp input by Scilab





Program in Scilab:

s=%s;

num=10*s+4;

den=4+4*s+s^2;

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

t=0:0.01:10;

gs=csim('step',t,g);

gr=csim(t,t,g);

subplot(2,1,1);

xgrid;

xtitle('Response to unit-ramp','t(seg)','Amplitude')

plot2d(t,gr,3);

plot2d(t,t,4);

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

subplot(2,1,2);

plot2d(t,gs);

xgrid;

xtitle('Response to unit-step','t(seg)','Amplitude')