Q1) Which one represents the bode magnitude and phase diagrams of the given transfer function $H(s) = s + \omega_n$ a) 90° 20 dB 45° $\omega_n$ $\omega_n$ 180° b) 20 dB 90° d) $\omega_n$ 90° 20 dB c) 45° 20 dB $\omega_n$ $\omega_n$ -20 dB -90° $\omega_n$ $\omega_n$ $\omega_n$
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Adi S.
PROBLEM 3 Let a unity feedback control system have a loop transfer function: L(s) = 10(1+0.4s)/(s(1+2s)(1+0.24s+0.04s^2)) a) Draw the Bode plot b) Determine the gain margin and phase margin.
Question 3 1. A speed control system is shown in Figure 3 where y(t) is the actual speed, r(t) is the reference input, which is the desired speed, and d(t) is a load disturbance. Load disturbance D(s) R(s) Desired speed Y(s) Actual speed Controller K/s G(s) = 1/(s + 5) Figure 3 (a) Determine the transfer function Y(s)/R(s) (b) Determine the transfer function Y(s)/D(s) (c) Assume r(t) = 0. Use the final value theorem to find the steady-state response of the output y(t) when the load disturbance d(t) is a unit step signal.
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