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Control of longitudinal tension in multi-span web transport systems during start up
(Oklahoma State University, 1993-06)
The control of longitudinal tension in a multi-span web transport system during start up is studied using first-principles modeling and digital simulation. Since start-up problems normally involve large variations of system ...
Systematic method for determining the controller gains in a multi-span web line
(Oklahoma State University, 2019-06)
A web line may have multiple locations where feedback systems are used to control web and roller speeds, and web tension. The Euclid Web Line (EWL) in the Web Handling Research Center at Oklahoma State University is such ...
Controller gain scheduling in a multi-span web line
(Oklahoma State University, 2019-06)
Gain scheduling is a common method of variable gain feedback control used to account for changes in the diameters of an unwind roll and a rewind roll during the operation of a web line. This paper focuses on three methods ...
Adaptive feedforward based control strategy for attenuation of periodic tension oscillations in roll-to-roll manufacturing
(Oklahoma State University, 2013-06)
Considering the aforementioned issues, an adaptive feedforward (AFF) algorithm that can work in parallel to an existing feedback control systems is developed for control of web tension and to attenuate periodic oscillations. ...
On the governing equation for web tension with out-of-round rolls
(Oklahoma State University, 2013-06)
In roll-to-roll (R2R) manufacturing the presence of non-ideal elements, such as out-of-round or eccentric rolls, induces periodical oscillations in the web tension signal. Model simulations based on ideal elements do not ...
Dynamic behavior of dancer subsystems in web transport systems
(Oklahoma State University, 1993-06)
A dancer subsystem may be used as a tension measurement or as a disturbance attenuator depending on its design. The design of a dancer subsystem to accomplish a desired result requires the development of a dynamic model ...