Brian Mace design via root locus Flashcards
1
Q
What can we do if we want a transient response that does not currently lie on the root locus?
A
Add a pole or zero.
2
Q
How do we add a pole or zero?
A
Add a compensator to the system as this will change the pole / zero structure and therefore the root locus.
3
Q
What is the effect of adding a pole to the system?
A
It will pull the root locus to the right and slow the relative response of the system, it will improve the steady state error performance.
4
Q
What is the effect of adding a zero to the system?
A
It will add phase lead to the system by pulling the root locus to the left. Makes the system more stable and speeds up the system response.
5
Q
What is the equation for a PD compensator?
A
Gc(s) = Kc * (s + Zc)
