Re: Focus on the Dead Time!

"Dwstclair" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> The potential performance of a control loop is limited by
>  the apparent or real dead time in the loop. You are up
>  against a stone wall if you try to get better performance
>  out of a loop, than the dead time will allow, by tuning
>  alone. If you need better performance, reduce the dead
>  time, reduce the disturbance, use feed forward or do
>  something else, but tuning can do only so much. There are
>  sophisticated approaches to reducing the problem, but
>  these are not for the novice.
>
> For more information you may refer to a booklet  "Controller
> Tuning and Control Loop Performance, a Primer, Second Edition"
> which is available in the US at the cash discounted price of $17
> if paid with a check or money order.

Alternatively employ common sense, which, though obviously rare, is cheap.