Brian Mace design via root locus Flashcards
What can we do if we want a transient response that does not currently lie on the root locus?
Add a pole or zero.
How do we add a pole or zero?
Add a compensator to the system as this will change the pole / zero structure and therefore the root locus.
What is the effect of adding a pole to the system?
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.
What is the effect of adding a zero to the system?
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.
What is the equation for a PD compensator?
Gc(s) = Kc * (s + Zc)