Question 1
Why is it important to specify both gain margin and phase margin when evaluating control system robustness?
Question 2
How does increasing a system’s phase margin typically affect its closed-loop transient response?
Question 3
At the gain crossover frequency the open-loop phase is –165°, what is the phase margin?
Question 4
At the phase crossover frequency the magnitude of the open-loop transfer function is 0.25, what is the gain margin in dB?
Question 5
In a Nyquist plot, how is the gain margin determined?
