Oh yes. One of the best papers I have read lately is: "An Electronic Throttle Control Strategy Including Compensation of Friction and Limp-Home Effects" Deur, Pavkovic et al, IEEE industry apps may/june 2004 vol 40 no.3 pp821-834
These guys take the whole shebang into account. Interestingly enough they optimise the large-signal step response by omitting the setpoint from the P & D terms (something Astrom et al talk about).
Cheers Terry
And of course in our smps error-amps the setpoint connection is hard-wired, and causes the overshoot that makes us use soft-start circuitry :(
Cheers Terry
I am saying (albeit indirectly) that setpoint weighting/removal is not so easy/obvious in the analogue world. Actually its pretty counter-intuitive if you dont do the maths.
Cheers Terry
Pelvic Inflammatory Disease.
what did you think?
Doug
Too much. Its a good thing I read this group for the entertainment more than the technical.
Doug
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