AVR-Chat

Hi all,

I have a servo motor that accepts step and direction inputs and I want 
to monitor a very dynamic process.

The process is plasma torch cutting.  Typically a couple hundred volts, 
but a simple voltage divider will yield a useable signal.

The process is very noisy.  This means that if a heavy filter is used 
on the input, it will make control sluggish.   no filter and the unit 
will wear itself out in short order.

I am hoping there is a simple solution with a PID type control.

I searched the list, but got tired of only finding stuPID and raPID 
with the PID search.

Any ideas where to start ?

Dave