QUESTION 4 A unity negative feedback control system has an open loop transfer function as follows: 20K (s +0.8) KGHS) s-

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QUESTION 4 A unity negative feedback control system has an open loop transfer function as follows: 20K (s +0.8) KGHS) s-

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Question 4 A Unity Negative Feedback Control System Has An Open Loop Transfer Function As Follows 20k S 0 8 Kghs S 1
Question 4 A Unity Negative Feedback Control System Has An Open Loop Transfer Function As Follows 20k S 0 8 Kghs S 1 (45.38 KiB) Viewed 47 times
a) Sketch the Bode diagram of the control system for K =
1.
b) Determine the gain crossover frequency and phase crossover
frequency.
c) Determine the gain margin and phase margin of the system.
d) Determine the critical value of K for a stable closed-loop
system
QUESTION 4 A unity negative feedback control system has an open loop transfer function as follows: 20K (s +0.8) KGHS) s-(s + 2)(s + 6) a) Sketch the Bode diagram of the control system for K=1. b) Determine the gain crossover frequency and phase crossover frequency. c) Determine the gain margin and phase margin of the system. d) Determine the critical value of K for a stable closed-loop system. (10 marks)
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