15.02.2021, 12:41
Ok, but still, I don't understand some points:
- If I want to achieve, let's say some kind of control right from the start (I don't want P I and D values to be 1), I want the controller to behave like other KNX PI controllers and be able to set parameters like this - x Kelvin/y minutes, can I do this or it's impossible?
- Why P controller gives out 0 percent even if its value is 1? Other gains for I and D parts are 0, but that shouldn't affect the output, just that the output should be very "bouncy". Should I leave it on for more time for it to do something?
- At the end result, this is what I'm trying to achieve - I have a KNX PI controller controlling underfloor heating valves, which control parameters are set to (6K/150min) and I want to see, what happens if I take out "I" part out of the controller and what happens if I put some kind of "D" part in the controller. So my thought was to create identical controller in LM, create P controller with 6K parameter, PI controller with same parameters as KNX one have and a PID controller, with D part ranging in values from 0 to 1. Then from trend logs I would monitor all controllers outputs and see what kind of responses I get to different setpoints/temperatures and make some conclusions. So, in overall, is it possible to do this with LM or not?