(Solved):
3. Consider the unity feedback system shown in Figure 1 with G(s)=s(s1)1,C(s)=K, and d(t)=0. ...
3. Consider the unity feedback system shown in Figure 1 with G(s)=s(s−1)1,C(s)=K, and d(t)=0. (a) Obtain a complete Nyquist plot for G(s). (b) Using the Nyquist stability criterion. Find the range of values for K>0 such that the closed-loop system is stable.
Figure 1: Unity feedback system.