(Solved):
For questions 3 and 4 , use the unity feedback system given below. (20p)3-Ass ...
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For questions 3 and 4 , use the unity feedback system given below. (20p)3-Assume that the controller and the plant transfer functions are selected as \( C=K \frac{(\varepsilon+z)}{(s+6)} \) and \( P=\frac{(s+4)}{\left(s^{2}+4\right)} \) respectively. Then, a) Using root locus design technique calculate the values of \( K \) and \( z \) in order closed loop system to have a pole at \( s=-8+4 j \) (no other methods will be accepted). b) Is \( C \) a lead or lag controller? Explain your answer.