PID Controller Explained: Tuning and Winder Tension

What the video shows

PID control explained: what P, I and D do, how to tune a loop, and feed-forward plus PID for winder tension control, in 5:13. On one simulated step response, P alone leaves an offset and overshoots as the gain rises; I removes the offset but adds overshoot and needs anti-windup; D damps the overshoot but amplifies noise, so it is filtered. Tuning: a step test (gain, dead time, time constant), P first, then I, D only if needed, output limits and trend logging. On a winder, motor torque is T = F·r/(i·η): feed-forward from the calculated diameter does most of the work and the PID trims the rest with a dancer or a load cell; taper tension and field footage of an ONX tension-controlled winder.