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Roll speed and web tension regulation using two degree of freedom control systems
(Oklahoma State University, 2015-06)
In this paper, we first consider the problem of load speed regulation in a two inertia system consisting of a motor shaft connected to the load shaft via a mechanical transmission. The problem is reminiscent of a material ...
Modeling and computer simulation of zero speed splice unwinds
(Oklahoma State University, 2017-06)
A computer program for conducting model simulations for zero speed splice unwinds is described in this paper. A typical unwind system consisting of the unwinding material roll, festoon, dancer, and pull rolls is considered. ...
Control of strip tension in the heating/cooling sections of continuous annealing lines using model-based tension estimation
(Oklahoma State University, 2015-06)
Continuous annealing lines are productive manufacturing lines used by steel making companies for the manufacture of thin steel sheet products. In these lines, the steel strip is continuously heated and cooled depending on ...
Spatially dependent transfer functions for web lateral dynamics
(Oklahoma State University, 2017-06)
In this paper we derive spatially dependent transfer functions for web span lateral dynamics which provide web lateral position and slope as outputs at any location in the span; the inputs are guide roller displacement, ...
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. ...
Comparison of control strategies for roll-to-roll printing presses
(Oklahoma State University, 2013-06)
Flexible printed electronics is touted to be a significant part of the future of the roll-to-roll (R2R) printing industry. Electronic devices, such as RFID tags, low-cost displays and lighting devices, polymer solar cells, ...
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 ...
Design of tension control systems to minimize interaction and disturbance propagation in web process lines
(Oklahoma State University, 2015-06)
In roll-to-roll systems (R2R), a local controller is designed for each section or tension zone based on measurement of web tension and speed from that section; this is typically referred to as decentralized control. This ...
Application of dimensional analysis to roll-to-roll manufacturing systems
(Oklahoma State University, 2013-06)
In this paper, we investigate the application of dimensional analysis for R2R systems. First, dimensional form of governing equations for web tension and speed are transformed to non-dimensional form using dimensional ...
Modeling of the transport behavior of low modulus webs
(Oklahoma State University, 2013-06)
We consider three key issues in this study for low modulus webs. First, transport in the high strain region is considered when the materials exhibit nonlinear and viscoelastic behavior. Second, in-plane biaxial strain is ...