Calculate steady state error for unit step and ramp input for Zero order hold

Hi,

how can I calculate the state error for unit step and ramp input for the sys2?

sys1=tf(1,[1 1 0])

sys2=c2d(sys1,0.1)

I have calculated by hand and I get for unit step input 0

and for ramp input 0,1 steady state error

I want to check it now the the steady state error with matlab.

If my calculation by hand is ok.

Answer 1

[Paul]

The by-hand calculations do not appear to be correct. A quick way to get an idea if the calculations for the step input are correct is to just plot the step response:

doc step

The ramp response can be plotted using

doc lsim

among other options.

Alternatively, the Symbolic Math Toolbox can be used to analytically compute the responses.