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I'm trying to find the step response of the system below in picture and I need to find settling time, overshoot and static error of output. How can I find them? Is what I programmed correct?

Matlab code :

A=[0,1,0,0;0,-42.44,212.24,0;0,0,0,1;0,0,0,-42.44];
B=[0;106.12;0;78.6];
C=[1,0,0,0;0,1,0,0;0,0,1,0;0,0,0,1];
D=0;
sys = ss(A, B, C, D)
t=0:0.1:10;
figure;
step(sys,t,'r')

The system

Controller and observer design

Siong Thye Goh
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  • Check out [`stepinfo`](https://nl.mathworks.com/help/control/ref/stepinfo.html) – rinkert May 27 '19 at 13:38
  • @rinkert Hi sir, Thank you in advance. It gave me these info without any data 4×1 struct array with fields: [RiseTime SettlingTime SettlingMin SettlingMax Overshoot Undershoot Peak PeakTime] and How can I find the static error? –  May 27 '19 at 13:45

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