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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. ...
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 ...
Web line resonant frequencies
(Oklahoma State University, 2009-06)
The goal of this paper is to investigate the resonant frequencies of a system of idle rollers and web spans. Of particular interest is the determination of the minimum resonant frequency as a function of the number of idle ...
Modeling and frequency response of web tension with a pendulum dancer, and comparison of load-cell and dancer based tension control systems
(Oklahoma State University, 2011-06)
In web processing lines, web tension is typically regulated using an outer loop that provides a trim to the velocity reference of the inner velocity loop. The feedback signal for the outer tension loop is either a position ...
Modeling and analysis of rotogravure printing presses
(Oklahoma State University, 2011-06)
Print registration is the method of overlapping successive printed patterns to form a complex multicolor pattern. Registration error is the misalignment in the overlapped patterns. This paper deals with modeling machine ...
Computation of span length variations due to out-of-round material rolls
(Oklahoma State University, 2009-06)
It is well known that non-ideal elements such as out-of-round/eccentric material rolls affect web tension. However, the mechanism through which these non-ideal components induce tension oscillations was not clear previously. ...
Web tension behavior in the presence of eccentric rollers: Modeling and validation
(Oklahoma State University, 2011-06)
Since rotating machinery is used to transport the web on rollers, it is common to observe periodic oscillations in measured signals such as web tension and web transport speed. These periodic oscillations are more prevalent ...