Repeat Problem 15.4 for the open-loop transfer function where K = 40.Problem 15.4a. Obtain...

Repeat Problem 15.4 for the open-loop transfer function

where K = 40.

Problem 15.4

a. Obtain a Bode plot for the open-loop transfer function

 

Determine the gain margin and the phase margin when K = 100.

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b. Find the value of K that will give a gain margin of 10 dB.

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c. Find K*, the maximum value of K for which the closed-loop transfer function will be stable.