(c) With the aid of the root locus technique and the Routh-Hurwitz stability criterion, show that the feedback system is
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(c) With the aid of the root locus technique and the Routh-Hurwitz stability criterion, show that the feedback system is not stable for all positive values of K. [6 marks] You have recently been employed to salvage the situation. Your boss has informed you that the objective of the task is to design a new controller that guarantees the stability of the unity feedback system while satisfying the following transient and steady-state performance requirements: Settling time < 0.5C seconds, Peak time < 0.2D seconds, Steady-state errors $3.5E%. . . .
marks] GAs) R(S) S C(s) (s + 2)(s? - 25) Figure Q2a
Replace the letters A - F (highlighted in Yellow) with the numerical computation generated from the pre-assessment activity. For example, if A = 1 and B = 2 then 3A = 31, AB = 12, and A.B = 1.2. = =