Adaptive control for edge alignment in polyester film processing

Huang, Ching-Cheng; Wu, Hsien‐Yi; Tang, Tie-Qiao

doi:10.1002/adv.20096

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Shin et al [8] derived a factor to describe the influence of the web tension on the lateral dynamic response, and designed a cross-couple controller, which could decrease the lateral disturbance caused by tension variation. Huang et al [9] adopted an adaptive high-gain output feedback controller which can effectively alleviate tension and speed fluctuation. Pagilla et al [10] designed an optimal web guide which performs well in the presence of disturbances and with uncertainties in the model parameters.…”

Section: Introductionmentioning

confidence: 99%

Dynamic matrix control of the lateral position of a moving web

Xiong

Cai

Xiong

et al. 2012

2012 IEEE International Conference on Mechatronics and Automation

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The lateral motion of the web is one of the most common problems in roll-to-roll (R2R) systems, which results in degraded product quality, waste, or even processing interruption. An industrial proportional-integral-derivative (PID) controller with fixed gain is mostly used for lateral position control. In fact, the model parameters of the web lateral dynamics such as the tension and the transport velocity of the web are seldom exact. Variations of these parameters could significantly affect the lateral web dynamics. A dynamic matrix control (DMC) strategy is adopted in the offset pivot web guide to control the lateral position of the web, which does not depend on accurate model. Simulations of the DMC controller and the PID controller was carried out with a sinusoidal disturbance in different web conditions. The results show that DMC controller performs much better than PID controller with good disturbance rejection. It is observed that the lateral position of the DMC controller is less than a half of that of the PID controller. As the web velocity decreases or the web tension increases, the lateral position becomes smaller.

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Section: Introductionmentioning

confidence: 99%

Dynamic matrix control of the lateral position of a moving web

Xiong

Cai

Xiong

et al. 2012

2012 IEEE International Conference on Mechatronics and Automation

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“…In addition, strip lateral movement is important in various fields as well as the field of metal strip processing. In film processing, controlling for edge alignment was investigated, (Huang, et al, 2007). In the field of OA equipments such as printers and facsimiles, paper feed mechanism was studied, (Nishimura, 1981).…”

Section: Introductionmentioning

confidence: 99%

Strip lateral position control using electromagnets in continuous processing line

Ishigaki¹,

Nishina²

2015

Mechanical Engineering Journal

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In continuous metal strip processing lines, such as pickling, annealing and surface treatment lines, lateral instability of strips is a common problem. Strip lateral movement has a bad influence on productivity of the processing lines. A simple and effective device to control a lateral position of a strip is required because conventional preventions such as a steering roll and crown roll are not effective. In this study, a method of controlling a strip lateral position using electromagnets was investigated. First, theoretical equations were derived to predict capability to control a strip. Next, the derived theory was verified compared with lab experiments. The results obtained can be summarized as follows: (1) The theoretical equations of velocity of lateral movement are derived from inclination when the strip is attracted by electromagnet(s). The inclination is calculable from geometric relation. (2) It is found that the theoretical equations are valid by lab experiments in the conditions of changing attracting displacement and line speed. Controlling lateral movement using electromagnets is possible, and the control capability can be estimated by the derived theory. (3) The velocity of lateral movement in the case of attracting the half of strip width is three times as fast in the case of attracting the edge of the strip.

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Adaptive control for edge alignment in polyester film processing

Cited by 2 publications

References 16 publications

Dynamic matrix control of the lateral position of a moving web

Dynamic matrix control of the lateral position of a moving web

Strip lateral position control using electromagnets in continuous processing line

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