c) The forward path transfer function of a unity feedback system has the frequency response as shown in Figure 3.3. From the bode diagram: i. Determine the phase margin, gain margin and crossover frequency. ii. Determine the velocity error constant K, and steady state error to unit ramp input. iii. Suggest a way to increase the phase margin to 45⁰.

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H4.
c) The forward path transfer function of a unity feedback system has the frequency response as shown
in Figure 3.3.
From the bode diagram:
1. Determine the phase margin, gain margin and crossover frequency.
II. Determine the velocity error constant K, and steady state error to unit ramp input.
ii. Suggest a way to increase the phase margin to 45°.
Bode Diagram
60
40
20
10
Frequency (rad's)
Figure 3.3
Magnitude (dB)
Phase (deg)
0
20
40
-60
80
-100
90
-180
-225
10
%9
b
Transcribed Image Text:c) The forward path transfer function of a unity feedback system has the frequency response as shown in Figure 3.3. From the bode diagram: 1. Determine the phase margin, gain margin and crossover frequency. II. Determine the velocity error constant K, and steady state error to unit ramp input. ii. Suggest a way to increase the phase margin to 45°. Bode Diagram 60 40 20 10 Frequency (rad's) Figure 3.3 Magnitude (dB) Phase (deg) 0 20 40 -60 80 -100 90 -180 -225 10 %9 b
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