You could write a program for a feedforward thermostat
Actually, you couldn't. At least, it wouldn't work very well, not nearly as well as a system that simply measures the actual temperature and raises or lowers it as necessary.
Try it and see.
"Feedforward control loop" is pretty much a contradiction in terms. Look at anything described as feedforward control, and you'll find that it's wrapped inside a feedback loop, even if only a human operator keeping the feedforward system properly tuned. There are some demonstrable feedforward links in the nervous system, such as the vestibulo-ocular reflex, but as expected, the VOR is wrapped inside a feedback system that tunes its parameters. It wouldn't work without that.
Actually, you couldn't. At least, it wouldn't work very well, not nearly as well as a system that simply measures the actual temperature and raises or lowers it as necessary.
Ah, but if I deliberately created an artificial scenario designed to make FF control work, then FF control would look rockin'.
You know, like the programs you linked do, except that they pimp feedback instead ;-)
Yes, feedback control is usually better; my point was the excessive extrapolation from that program.
..."Feedforward control loop" is pretty much a contradiction in t
See this great little rationalist video here.