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• ### A positive-feedback closed-loop system is subjected to an input voltage of 1V dc. Assuming the forward...

A positive-feedback closed-loop system is subjected to an input voltage of 1V dc. Assuming the forward path gain of 1 and a feedback path gain of 0.5 Sketch the block diagram of the system. Deduce the signal flow diagram of the system Determine the output voltage

• ### 4. When the closed-loop system shown is subjected to a unit-step input, the system output responds...

4. When the closed-loop system shown is subjected to a unit-step input, the system output responds as shown in the Figure below. Determine the values of K and T from the response curve. 0.254 (seconds)

• ### 3. For the feedback control system shown in Figure Q3 below, the forward-path transfer function given...

3. For the feedback control system shown in Figure Q3 below, the forward-path transfer function given by G(s) and the sensor transfer function is given by H(s). R(s) C(s) G(s) H(s) Figure Q3 It is known that G(s) -- K(+20) S(+5) H(s) = and K is the proportional gain. (S+10) i. Determine the closed-loop transfer function and hence the characteristic equation of the system. [6 marks] ii. Using the Routh-Hurwitz criterion, determine the stability of the closed-loop system. Determine the...

• ### 2. Aunity feedback system is shown in the Figure (a) below has open-loop poles at land...

2. Aunity feedback system is shown in the Figure (a) below has open-loop poles at land apero at The root locus plot for the open-loop transfer function for K> is as shown in Figure (b) below. Determine the open-loop transfer function (in) closed-loop transfer function(i) characteristic equation and the liv the break-in point. (4+4 +2.5) (vill the pain K is chosen as 5 will the closed-loop system have an oscillatory response to a step input? Justify your answer mathematically(5) 11

• ### Spring 2019 3. Given a closed-loop control system with unity feedback is shown in the block...

Spring 2019 3. Given a closed-loop control system with unity feedback is shown in the block diagram. G(s) is the open-loop transfer function, and the controller is a gain, K. 1. (20) Calculate the open-loop transfer function tar →Q--t G(s) (10) Calculate the steady-state error to a step input of the open-loop system. 7. (in Bode Form) from the Bode plot. (10) Calculate the shortest possible settling time with a percentage overshoot of 5% or less. 8. 2. (10)Plot the...

• ### Problem 5 (15 points) A unity negative feedback closed-loop system has the closed- loop transfer function...

Problem 5 (15 points) A unity negative feedback closed-loop system has the closed- loop transfer function given below. (s + 4) G (5) " (s +50) (s + 2)(s + 5) Compute the percent overshoot and rise time of the step response. Process D(3) GE) HX) Figure 1.

• ### A feedback control system with adjustable gain K is shown as in Figure 4.1. Here, Q4 1 and H (s) where b 2a bs +a G(s)=...

A feedback control system with adjustable gain K is shown as in Figure 4.1. Here, Q4 1 and H (s) where b 2a bs +a G(s)= 3(s+a) Y(s) R(s) G(s) К H(s) Figure 4.1 A feedback control system with adjustable gain Sketch Nyquist plot for G(s)H(s) for 0.9 <a < 1.1. (a) (18 marks) (b) Discuss the stability of closed-loop system with open-loop function as in (a) if K 10b (7 marks) A feedback control system with adjustable gain K...

• ### 2. The figure below shows a closed-loop system with a reference input and disturbance input. Obtain...

2. The figure below shows a closed-loop system with a reference input and disturbance input. Obtain the expression for the output Y(s) when both the reference input and disturbance input are present. Please comment on the design of this system. TS RIN Gis) G®) G(S)

• ### Rt)+ e(t) y(t) K1 S +4 Figure 3: A closed-loop control system with an inner feedback loop. Comput...

rt)+ e(t) y(t) K1 S +4 Figure 3: A closed-loop control system with an inner feedback loop. Compute the closed-loop transfer function Gal (s) -Y(s)/R(s) for the system shown in Figure 3 rt)+ e(t) y(t) K1 S +4 Figure 3: A closed-loop control system with an inner feedback loop. Compute the closed-loop transfer function Gal (s) -Y(s)/R(s) for the system shown in Figure 3

• ### Requires 100% correct answer along with pspice 10.24 A transconductance amplifier with negative feedback is shown...

Requires 100% correct answer along with pspice 10.24 A transconductance amplifier with negative feedback is shown in Fig. P10.24. The amplifier has an open-loop P transconductance of A 50 x 103 A/V, an input resistance of R 25 k!2, and an output resistance of Ro-50 k2. The feedback circuit has RF 2.5 kS2. The source resistance is Rs 1 k, and the load resistance is RL-500 Ω. Determine (a) the input resistance Ri,-vs/is, (b) the output resistance Rof, and (c)...