Eliminating non-repeatable errors

Repeatable error is easy to accommodate and correct. But speed changes and servo-system bandwidth issues sometimes cause non-repeatable error in automated systems. Fortunately, some hardware with firmware command sets can make all errors predictable, and therefore manageable, even when line speed va...

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Bibliographic Details
Published in:Motion system design 2008-01, Vol.50 (1), p.54-55
Main Author: Rees, Steve
Format: Magazinearticle
Language:English
Subjects:
Analysis
Error recovery
Online Access:Get full text
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Summary:Repeatable error is easy to accommodate and correct. But speed changes and servo-system bandwidth issues sometimes cause non-repeatable error in automated systems. Fortunately, some hardware with firmware command sets can make all errors predictable, and therefore manageable, even when line speed varies. It is particularly useful in large-roll web processing, because it makes for good plastic, paper, and other sheet product even from the start a roll (when die motor is moving slowing because of the large circumference of the roll) as well as near the core (when the motor may not be able to keep line speed very high due to the small circumference)-for almost no scrap and much better repeatability.
ISSN:1537-1794