PID vs Hysteresis Controlled
Posted: Mon Dec 08, 2014 2:43 pm
The Top Graph is PID Controlled, The second one is for Hysteresis Controlled. I used the default PID settings and changed the Hysteresis to 1 degree. It is the same Out.
Graphs are same scale.
It looks like the Hysteresis Controlled gives a better graph. I thought PID would be a better choice for an electric element. This was a 2 sec trace for about 20 minutes (I pasted the graphs in Paint {and had to shrink the file to fit the Blog restriction} together to get a longer look in the attachment). Any suggestions for adjusting the PID setting as I know nothing about them. The Hysteresis Controlled is fine and that is what I used on my last brew session, and when I start to use on a fermenter I will use Hysteresis for that.
Just trying to wrap my head around PIDs.
Graphs are same scale.
It looks like the Hysteresis Controlled gives a better graph. I thought PID would be a better choice for an electric element. This was a 2 sec trace for about 20 minutes (I pasted the graphs in Paint {and had to shrink the file to fit the Blog restriction} together to get a longer look in the attachment). Any suggestions for adjusting the PID setting as I know nothing about them. The Hysteresis Controlled is fine and that is what I used on my last brew session, and when I start to use on a fermenter I will use Hysteresis for that.
Just trying to wrap my head around PIDs.