I have calculated my transfer function and plot the following response using the command step in MATLAB
This is what I get in MATLAB


So from this diagram , it shows that the steady state value is 4.26 but how do I find the steady-state error ?

 

Hi,

In any language the steady state error will be the response at t=infinity minus the set point. So if your target set point is 2.000v and your response at t infinity is 1.999v, then your steady state error is -0.001 volt. You might also express this as a percentage of the output.