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Engineering · Mechanical Engineering
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PobIEM 2): (30 marks) For unity feedback system, it is known that0.0 G)- s(s-4) -e-E-Han a) For Gc K (proportional control) sketch the root locus. (6 marks) b) For what value of K, the system is stable? (2 marks) c) A new controller Go(s)- K (s +2) (PD control) was proposed. Sketch the root locus for this system. (8 marks) e) Using Routh method, What is the range of K values that makes the system stable, compare this with K values from the sketch. (5 marks) f) Choose any K in that range, what is the steady state error for a unit step input for R(s). (4 marks) g) T have critical damping for step input. Graphically, determine K, un, wd then compute 7, tp and Mp. (5 marks)

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