Home Sciences & Innovations Sciences Multivariable CD Control With Adaptive Alignment for a High-Production Linerboard Machine

Multivariable CD Control With Adaptive Alignment for a High-Production Linerboard Machine

Technical Paper published in J-FOR* Vol.2, No5, 2012

ABSTRACT

Paper quality has greatly benefited from the application of multivariable cross-direction (CD) controls. There are, however, some challenging production processes that require an industrial adaptive alignment solution to prevent the degradation of optimal performance due to sheet wander and sheet shrinkage.

A high-production linerboard machine, where it is typical to have multiple CD actuator beams with narrow zone spacing controlling critical parameters such as CD reel moisture and dry weight for a wide range of production grades, is a common example of a challenging control opportunity.

The multivariable controller presented in this paper has been configured to minimize CD reel moisture and dry-weight variability by coordinating three CD actuator beams: a dilution profiler, a steam shower, and an Aqualizer™ rewet system.

The challenges have been handled by configuring the multivariable CD controller to operate both dilution profiler and rewet system CD actuator beams with adaptive alignment.

 Click to access the complete article in a pdf format

 

AUTHORS:

 
 CRISTIAN GHEORGHE
Technology Product Manager,
Honeywell Process Solutions,
North Vancouver, BC,
Canada
 AMOR LAHOUAOULA
Senior Service Specialist,
Honeywell Process Solutions,
North Vancouver, BC,

Canada
DANLEI CHU
Research Scientist,
Honeywell Process Solutions,
North Vancouver, BC,

Canada 

* J-FOR - The Journal of Science & Technology for Forest Products and Processes, is a PAPTAC's flagship publication, incorporating high-quality peer-reviewed papers dealing with the technology and science of traditional and emerging areas that are pertinent to the forest industry.

J-FOR-2

 
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