Closed Loop Systems-October 2010-Exam-Control Systems, Exams of Control Systems Analysis

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kee : t r | | ie e : i : COMSATS Institute of Iuformation echnology (CILT) 3 4 . ie Department of Electrical’ Engineering SESSIONAL — 1 EXAM ENESIS wen SYSTEMS Program: BET-6(B) Max. Marks: 40 i Semester: — Fall 2010 Time Allowed: 60 Minutes Date: 19” October, sma Gy | Instructor: Ahsan Malik i ky t 7 a & ext Q-1 Solve the following differential equation. Assume zero initial conditions, 5 “7 ws ee diz at Ret Oy ties owe nat b &j a) Find the transfer function. * ; (3) b) Find the step response. ' . : [ay c) Find the Poles of the systems and comment about stability. ys . BB} Q-2 During a medical operation an; anesthesiologist controls ‘the depth of unconsciousness by. controlling the concentration of isoflurans ina vaporized mixture with oxygen and nitrous oxide. The: depth of anesthesia is measured by patient’s blood pressure. The anesthesiologist also regulates ventilation, fluid balance, ‘and the administration of other drugs. In order to itee the anesthesiologist to devote more time to the latter tasks, in the interest of the patient’s safety, we wish to automate the depth of anesthesia by aptomating the control of isoflurane concentration. Draw the fimetional. block diagram of the jsystem showing pertinent signals and subsystems. oi 3 | ; : [6] Q-3 Find the transfer function, G(s)=X3(s¥F(s), for thy trapslational mechanical system shown. A ire 2hin Si-sim Q-4 Find the transfer function G(s) = Vo(s)/V(s), for the operational amplifier circuit shown [7] 1: fomke ome ll uF ' vig feet a Q-5 a) How control system benefit the industries? b [53 b) What are-objectives in using any type of control? : = {5} : : ; age ofa i i z i ‘ f } : { : i i f b soya yaoi romana asaionepren et : : i ¥ : t