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Honored Contributor
Honored ContributorPI controller in VHDL
I'm trying to implement a PI controller in VHDL. where i tried a lot but i failed Please, can any one help me to achieve this task where i'm new in this field.
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Altera_ForumHonored Contributor
Honored ContributorI have done sort of PI that consisted of two branches only (proportional and integral parts). I used it for phase error control in a receiver carrier tracking.
It was very simple in vhdl (but have the code misplaced). The proportional part is just a multiplier; you multiply the error(input) by a constant (I used .1 ~ 200). The integral part is just an acuumulator; you add up the error nonstop and hopefully will not overflow. You will need to add a term here to decide how much to feedback = leakage (e.g. .001 ~ 1), again needs multiplier in the accumulator loop. The two branches are just added up. Testing is more difficult and best is in-system testing
