QUESTION 4 A unity negative feedback control system has an open loop transfer function as follows: 20K (s +0.8) KGHS) s-
Posted: Sat Feb 19, 2022 3:34 pm
- 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 48 times
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)