P9 28 Consider the feedback system shown in Figure P9 28 (a) Determine the value of K P such that the phase margin is P M 60 (b) Using the P M obtained, predict the percent over shoot of the closed loop system to a unit step input (c) Plot the step response, and compare the actual percent overshoot with the predicted percent overshoot Controller Process FIGURE P9 28 A unity feedback E(s) 1 R(s) Kp Y(s) system with a s(s 2) proportional controller in the loop

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P9 28 Consider the feedback system shown in Figure P9 28  (a) Determine the value of K P such that the phase margin is P M       60  (b) Using the P M  obtained, predict the percent over shoot of the closed loop system to a unit step input  (c) Plot the step response, and compare the actual percent overshoot with the predicted percent overshoot  Controller Process FIGURE P9 28 A unity feedback E(s) 1 R(s) Kp Y(s) system with a s(s 2) proportional controller in the loop

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Question: P9.28 Consider the feedback system shown in Figure P9.28. (a) Determine the value of K P such that the phase margin is P M .

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