A Design and Tuning Recipe for Integrating (Non-Self Regulating) Processes

It is best practice to follow a formal recipe when designing and tuning a PID controller.
A recipe lets us move a controller into operation quickly. And in most
all cases, the final performance will be superior to a controller tuned using an intuitive approach or trial-and-error method. Additionally, a recipe-based approach causes less disruption to the production schedule, wastes less raw material and utilities, requires less personnel time, and generates less off-spec product.
Integrating (or non-self regulating) processes display counter-intuitive behaviors that make them surprisingly challenging to control. In particular, they do not naturally settle out to a steady operating level if left uncontrolled.
So while the controller design and tuning recipe is generally the same for both self regulating and integrating processes, there are important differences...(there's more)...
Read the rest of this article at: http://www.controlguru.com/
See the complete Table of Posts at: http://www.controlguru.com/pages/table.html
Doug Cooper, Editor, www.controlguru.com
"Proven Methods and Best Practices for Automatic Process Control"
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