Mini tutorials · Control Loops
One idea per page: H(s), poles and zeros, why close the loop, loop gain, phase margin at fc, compensate a plant, the three blocks that make T, Type II, and root locus.
H(s), poles & zeros — RC low-pass from ideal cap to ESR zero.
Toggle poles and zeros — live Bode with asymptotic slopes.
Open-loop drift vs feedback that tracks Vref.
Break the loop — T is the product we measure and shape.
PM is the phase headroom at the 0 dB crossing of T. Bandwidth is that frequency.
One-pole plant, F = 1. Tune C so T hits a target fc and PM.
Plant, compensator, and feedback components shape loop gain in real time.
Live Bode plots and transfer function as you tune the classic network.
Interactive root locus, Bode, step, and impulse for compensated systems.
Planned
Root-locus walk page — not shipped until the preview is picked.
PID Pole-Zero Bridge (files stay, hidden from this list); Evans geometry; Type III; crossover from spec; applied regulator Track B. Chrome restyle of parts 1–5 is in progress — Type II already matches the newer mini-tutorial layout.