Question: P9.23 A closed-loop system has a loop transfer function K L(s) =G(s)G(s)= s(s+3)(s+10) (a) Determine the gain K so that the phase margin is P.M.

P9.23 A closed-loop system has a loop transfer function

K L(s) =G(s)G(s)= s(s+3)(s+10) (a) Determine the gain K so that the

K L(s) =G(s)G(s)= s(s+3)(s+10) (a) Determine the gain K so that the phase margin is P.M. 40. (b) For the gain K selected in part (a), determine the gain margin of the system.

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