Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)
- Volume 7 Issue 3
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- Pages.11-16
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- 2008
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- 1738-2270(pISSN)
Development of OHS System Driven by Linear Motor for Automatic Transfer of LCD Panels
선형전동기를 적용한 LCD 패널 자동반송용 순환궤도차량 시스템 개발
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Kim, Won-Gon
(LCD System Development Part, R&D Division, Shinsung FA Co. Ltd.) ;
- Yun, Jong-Bo (LCD System Development Part, R&D Division, Shinsung FA Co. Ltd.) ;
- Park, Gun-Woo (LCD System Development Part, R&D Division, Shinsung FA Co. Ltd.) ;
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Hwang, Gye-Ho
(LCD System Development Part, R&D Division, Shinsung FA Co. Ltd.)
- Published : 2008.09.30
Abstract
The authors investigated an overhead shuttle (OHS) system for automatic transferring the liquid crystal display (LCD) panels. The constructed tracks of OHS system include the linear and curve regions and have been installed on the ceiling to transfer the cassette of LCD glass along the closed-loop and open-loop tracks. In this study, the OHS system was implemented by a proposed linear motor to solve encoder installation and the system cost problems of the long distance transfer system. In addition, we utilized a new algorithm of the position detection and a new control algorithm for driving linear motor. The newly developed control algorithm was demonstrated from both a computer simulation and an experimentation, indicating that the highly reliable and speedy transfer system can enhance the LCD panel productivity of commercial OHS system.
Keywords
- OHS(Over Head Suttle);
- TFLM(Transverse Flux Linear Motor);
- Curve Region;
- Phase Difference;
- MCS(Material Control System)