The Bode diagram of the forward path tansfer function of a unity feedback control system with open loop transfer function given by: 6(s)H(s) = 60 (5+4) (5+3) (5+1) a) Find the gain and phase margin of the system from the diagram the best you can read it b) Report part (a) if the gain is reduced 10 times c) Find out what will be the new gain value if the gain margin is increased by 40db from the originla value in (a) d) Make a rough Nyquist sketch of the open loop system from its original value in (a) showing the angles of departure and arrival I SOLVED PART A GM= 10 and PM= 40 approximately I am mainly interested in part b,c and d. Specially D

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The Bode diagram of the forward path tansfer function of a unity
feedback control system with open loop transfer function given by:
6(s)H(s) =
Magnitude (dB)
Phase (deg)
20
01
-20
-60
-90
-180
-270
10
60
(5+4) (5+3) (5+1)
.-1
107
Bode Diagram
10°
a) Find the gain and phase margin of the system from the diagram the
best you can read it
b) Report part (a) if the gain is reduced 10 times
c) Find out what will be the new gain value if the gain margin is
increased by 40db from the originla value in (a)
d) Make a rough Nyquist sketch of the open loop system from its
original value in (a) showing the angles of departure and arrival
I SOLVED PART A GM= 10 and PM= 40 approximately
I am mainly interested in part b,c and d. Specially D
701
Transcribed Image Text:The Bode diagram of the forward path tansfer function of a unity feedback control system with open loop transfer function given by: 6(s)H(s) = Magnitude (dB) Phase (deg) 20 01 -20 -60 -90 -180 -270 10 60 (5+4) (5+3) (5+1) .-1 107 Bode Diagram 10° a) Find the gain and phase margin of the system from the diagram the best you can read it b) Report part (a) if the gain is reduced 10 times c) Find out what will be the new gain value if the gain margin is increased by 40db from the originla value in (a) d) Make a rough Nyquist sketch of the open loop system from its original value in (a) showing the angles of departure and arrival I SOLVED PART A GM= 10 and PM= 40 approximately I am mainly interested in part b,c and d. Specially D 701
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