Question: 4 . For a unity feedback system shown in Fig. 4 with PI Controller. Figure 4 ( square ) Determine the control

4. For a unity feedback system shown in Fig. 4 with PI Controller.
Figure 4
\(\square \) Determine the control gain \( K \) and the zero a to ensure \(63\%\) damping ratio and settling time 2 sec .
Determine also the unit step system response and the steady-state error. Compare the response with that when \( a=0\).
Validate your results using MATLAB toolbox "rltool"
4 . For a unity feedback system shown in Fig. 4

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