P9 25 A closed loop system has the loop transfer function L(s) Ge(s)G(s) Ke st (s 1) (a) Determine the gain K so that the phase margin is P M 60 when T 0 15 (b) Plot the phase margin versus the time delay 7 for K as in part (a)

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P9 25 A closed loop system has the loop transfer function L(s)   Ge(s)G(s)   Ke st (s 1) (a) Determine the gain K so that the phase margin is P M    60 when T   0 15  (b) Plot the phase margin versus the time delay 7 for K as in part (a)

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Question: P9.25 A closed loop system has the loop transfer function L(s) = Ge(s)G(s) = Ke-st (s+1) (a) Determine the gain K so that the phase

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