pid parameters

[ziedhosni]

Hello,

I would like to know what is the best and fastest strategy to tweak the 3 parameters of the PID knowing that my systems run in while loop that is executed every 40s.

I hope it is not by random guessing until I find the right parameters.

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Cheers,

Zied

[nathand · Accepted solution]

There are many ways to do PID tuning. The most common approach is the Ziegler-Nichols method (both open- and closed-loop versions). The PID help provides a basic explanation of PID tuning (this information is also available in a more readable PDF format as part of your LabVIEW installation). For more detail, Proven Methods and Best Practices for Practical Process Control by ControlGuru has some good information. You can also try the PID Autotuning feature (I haven't used it so I cannot comment on its effectiveness).