Good day,
Was checking the forum trying to find something similar but came across only a couple of topics that were not helpful.
I need to design an I-controller (from a PID block) to implement in hardware my Matlab/Simulink code. In one of the older threads I noticed that the current PID block (in 2012) did not allow to use only an integral part (when P=0). On top of that, the PID implementation in Labview and Simulink is a little bit different. The standard PID block in Simulink does not require to have a set-point port (even though it is possible to implement). Whereas in Labview, this port is presented by default in all possible PID variations.
So now I stuck the PID controller that can’t operate as an I-controller. Since this PID controller works with two different systems, it is impossible to have any set-points as the input. Already not the best start. A couple of other differences that I’ve noticed trying to tackle this issue.
Simulink PID controller (the as in the C&S toolkit http://www.ni.com/white-paper/6440/en/) based on the PID gains K-coefficients. The Simulink controller is defined by the proportional K-gain and time constants for the integral and derivative inputs (https://www.ni.com/en/shop/labview/pid-theory-explained.html).
I am more than aware about the use of the Standard PID controller in Labview (with P and I components), but this I-controller makes my tasks are quite challenging (even though the controller is more straightforward). I’ve tried to simulate a PID controller in a Mathscript node as a transfer function, but it is hard to judge how correct its behavior.
Does anybody know what can be done to solve this issue? Thank you.
