Re: [avr-chat] Autotuning a PID controller

[Galen Seitz]

Royce Pereira <address@hidden> wrote:

> Hi all, 
> Sometime back I had asked the lists' help in PID theory. I am grateful
> for all the replies- I was able to design a couple of PID temperature
> controllers.
> 
> In those designs I have to enter KP, KI, & KD manually, by a trial &
> error method.
> 
> Is it possible for the controller to find out these values
> automatically say based on rate of rise of temperature etc..?
> 
> I'd appreciate some help in developing an algorithm for the same.
> 

Wikipedia looks to have some good info.  Also check out "PID Without a PhD".
http://www.embedded.com/2000/0010/0010feat3.htm

galen