(C) A feedback loop is added to the system with gain Ki as shown in Figure Q2c. 5 3s +2 0.2 0.45 + 1 4 KE Figure Q2c Sys

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C A Feedback Loop Is Added To The System With Gain Ki As Shown In Figure Q2c 5 3s 2 0 2 0 45 1 4 Ke Figure Q2c Sys 1 (93.2 KiB) Viewed 17 times

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(C) A feedback loop is added to the system with gain Ki as shown in Figure Q2c. 5 3s +2 0.2 0.45 + 1 4 KE Figure Q2c System with Feedback Loop i) Design Ki so that the closed-loop system achieves critical damping. 4 marks ii) iii) Why is it not possible to create an underdamped second order system from two stable first order systems in series? 1 mark On a zero-pole map show the location of the poles of the system for Kp = 0 (i.e. no feedback), Kp = Kcritical (i.e. the value that results in critical damping calculated in i), and Kf = 2 3 marks The percentage overshoot of a system is given by the iv) ζπ equation OS = 100 e Assuming the specification for the system requires the fastest rise time possible whilst limiting overshoot to less than 10%, what should the value of 3 be set as and, hence, what should the gain Ke be set as? 2 marks