AVR-Chat

Hello,

When you search google (or whatever) try it with quotes around it like "pid"
and you may get closer to what you are looking for.

As far as your problem monitoring a "couple hundred volts" you might try an
optical isolator. There are many, NEC has a bunch so does Fairchild semi
etc. They aren't usually very linear but are quite useful to get an
interface to nasty circuits.

Jim


----- Original Message ----- 
From: "Dave Mucha" <dave_mucha@yahoo.com>
To: <AVR-Chat@yahoogroups.com>
Sent: Sunday, April 17, 2005 6:13 PM
Subject: [AVR-Chat] PID Is ther a simple way ?


>
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> 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
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> Yahoo! Groups Links
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