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Now showing items 31-40 of 153
Observations on the vibrations of paper webs
(Oklahoma State University, 2001-06)
Frequency clustering and edge vibration localization of thin, wide, high-speed translating webs are investigated using a linear, translating, tensioned Kirchhoff plate model with very small but finite bending stiffness to ...
Advanced controls for web handling: Ready for production?
(Oklahoma State University, 2007-06)
The science of web handling has numerous control challenges. Longitudinal control is especially challenging because the machine is a distributed, high order, tightly coupled flexible system. Advanced controls were developed ...
Modeling and identification of the source of oscillations in web tension
(Oklahoma State University, 2009-06)
Although there has been much work in dynamic modeling of different web handling elements and web longitudinal behavior, efforts to systematically validate models by experimentation on a web platform are non-existent. ...
Lateral response and control of a multi-span web system to dynamic changes to the web and conveyance hardware
(Oklahoma State University, 2001-06)
A multi-span model that predicts the lateral response of webs to changes in the upstream position of the web and any type of motion of the included rolls is presented. The model uses a beam approximation for the deflection ...
Effect of compliance and backlash on the output speed of a transmission system
(Oklahoma State University, 2005-06)
Backlash is one of the most commonly encountered nonlinearities in drive systems employing gears or ball-screws and indicates the play between adjacent movable parts. Presence of backlash causes delays and oscillations and ...
Modeling and control of web velocity and tension: An industry/university perspective on issues of importance
(Oklahoma State University, 2009-06)
The goal of this paper is to provide an overview of current industrial practice in control of web velocity and tension and discuss some critical issues that require future research from the community which is pertinent to ...
Influence of the gap throttle effect on the winding process and roll quality
(Oklahoma State University, 2005-06)
In the paper industry the winding technology has a significant influence on the quality of finished rolls. The rising productivity and quality efforts require a constant optimization of the winding process concerning the ...
Modeling the behavior of the paper web in printing presses
(Oklahoma State University, 2005-06)
The production efficiency of printing presses is limited by runnability problems such as web breaks, register errors, wrinkling and lateral instability of the paper web. To explore these phenomena, one must study the ...
Effects of air entrainment on vacuum drive roller traction
(Oklahoma State University, 2001-06)
Vacuum assisted drive rollers are commonly used to provide additional traction in web tension control schemes. Single-sided web contact makes them a natural choice between a coating station and an oven where lower tensions ...
Tension allocation in three dimensional wound roll
(Oklahoma State University, 2005-06)
Much consideration has been given to the relationship between web line tension and the stresses they induce in three dimensional wound rolls. Three dimensional wound rolls are distinctive because their radial and circumferential ...