PID control

[Geert Van Goethem]

In Labview 5.1 there is an example named : simplePID , i'm trying to
use this VI to control the temperature in a small reactor and this by
sending cool air in the reactor.
Now I have the following questions: does anyone know if i could use
this VI for such a control ?

The parameters P,I and D, can i tune them with the Ziegler Nichols
method ?

[BrandonS]

I took a look in 5.1. I can find an example for a simple PID demo. It has a simple PID inside of it. This is a very low level controller but I have used it before and it worked fine for me. I have also used the Ziegler-Nichols Tuning method before. I don't see any reason you couldn't use this method for your application. When I have used the method it fit well because I had a very slow moving system. This method gave me some really good starting points but I still did a little fine tuning to optimize my parameters.