Comparison of Mechanic Control, PLL Control, and Opamp Control

by allenlu2007


1. double integrator and location

Mechanics: instrinsic in Newton mechanics (frictionless, pendulum or inverted pendulum)

Two integrator plant — PD controller and many other controller referring to the previous article


PLL:  VCO is one integrator plant

One integrator plant — PI controller or P controller



One pole ideal opamp — P controller 

Two pole with one dominant pole and one non-dominant pole — P controller

Two poles close to each other (cascaded) — Miller compensation or two pole compensation (Dennis Feucht)

Any other controller

Three poles — Nested Miller compensation or others?