Your P value might be a little high, but that will definitely depend on the nature of your system. Here's the implementation math, for reference:
Furthermore, you should read the help doc for the PID VI - it actually uses time constants, so Ti and Td might not behave as you would intuitively belive.
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Originally Posted by plnyyanks
Just another note - if I remember, the LabVIEW implementation of the algorithm doesn't use Kp, Ki, and Kd as straight constants. It actually uses time constants for I and D (so it has Kp, Ti, and Td). You can see details of the NI implementation here. You can verify this in the help popup (ctrl-H) for the VI. Plan your constants accordingly. |