[sdiy] Frequency follower idea. Question about FM.

[cheater cheater]

On Mon, Sep 13, 2010 at 13:07, Tom Wiltshire <tom at electricdruid.net> wrote:
> What links did you find, cheater?
>
> I've had a look since this topic interests me too, but I didn't find much. Might have helped if I knew what the P, I, or D in PID stood for!
>
> Thanks,
> Tom

I just searched for PID Controller. There's a wikipedia entry for it:

http://en.wikipedia.org/wiki/PID_controller

PID stands for Proportional - Integral - Derivative. You have your
signal and you take part of that signal, some of its integral, and
some of its derivative, you blend it together in a blender, and you
feed it back into the generating system.

Cheers,
D.

> On 13 Sep 2010, at 11:13, cheater cheater wrote:
>
>> Thanks, Magnus - that's pretty cool! After skimming the wikipedia
>> article for a minute, I think it should also be possible to implement
>> PID in analog, since the maths don't seem to be iterative. This opens
>> a lot of doors to creative manipulation :) I will look into this topic
>> in-depth after I have moved into my new flat. I like the idea of using
>> a very well developed theory. Even if it doesn't turn out to fit
>> completely with my framework, maybe it can inspire it. That's a real
>> good tip!
>>
>> D.
>
>