Quote:
Originally Posted by apalrd
In the past two years, we never used an I or D term (except for a controller that was I only...)
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Same here, I can't remember a final application we had that used either an I or D term. We've played with all three terms in testing, but always found that a finely tuned P controller worked much better for our needs.
And when we tune our constants, we do use the Ziegler–Nichols method.