Dynamic control of crystallinity in polymer film casting process
This paper presents an approach for dynamic control of crystallinity in polymer film casting process. As known, the transients of crystallization dictate the microstructures of semi-crystalline polymer during solidification. In turn, the properties of finished products can be determined by adjustabl...
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| Định dạng: | Bài viết |
| Ngôn ngữ: | English |
| Được phát hành: |
Prince of Songkla University
2005-05-01
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| Loạt: | Songklanakarin Journal of Science and Technology (SJST) |
| Những chủ đề: | |
| Truy cập trực tuyến: | http://www.sjst.psu.ac.th/journal/26-3.pdf/09polymer-film.pdf |
| Tóm tắt: | This paper presents an approach for dynamic control of crystallinity in polymer film casting process. As known, the transients of crystallization dictate the microstructures of semi-crystalline polymer during solidification. In turn, the properties of finished products can be determined by adjustable variables in polymer film casting process such as temperature of chill roll. In this work, an experimental model of the solidification in film casting process is derived by a system identification technique. This model is used to design a digital feedback controller including a state estimator. The simulation results show the effectiveness of the proposed control technique on an extruded film. |
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| số ISSN: | 0125-3395 |