Consider the following open loop frequency response of a unity feedback system. The gain and phase margin
Question:
Consider the following open loop frequency response of a unity feedback system.
The gain and phase margin of the system are respectively
(a) \(0.00 \mathrm{~dB},-180^{\circ}\)
(b) \(3.86 \mathrm{~dB},-180^{\circ}\)
(c) \(0.00 \mathrm{~dB},-10^{\circ}\)
(d) \(3.86 \mathrm{~dB}, 10^{\circ}\)
Transcribed Image Text:
w, rad/s |G(jo)| |G(j)| 2 7.5 - 118 3 4.8 4 3.15 - 130 - 140 - 5 2.25 6 1.70 8 1.00 - 150 - 157 - 170 10 0.64 - 180
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To determine the gain and phase margins of the system given the open loop frequency response we need to find out the points where the phase angle crosses 180 which gives us the gain margin and the gai...View the full answer
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