Originally Posted by
oldford
Can you give me examples of the things you mention? Like PID control, for what is that used? And by which ecu's (make, type)?. Also please tell more about the feed forward control and how to predict and smooth fuel/ignition.
Anything closed loop uses "PID" controls
http://en.wikipedia.org/wiki/PID_controller
And yes you are right in saying the ecu to a degree is always behind....that said, the ecu operates far far far faster than any mechanical component on the engine. So there would be no delays from the ecu itself.
Any slow response would be down to the mechanical components themselves. Likely the slowest as far as engine control go being the fuel injectors.
Either way, not an issue.