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신재균,이종기,안홍태 한국섬유공학회 2004 한국섬유공학회지 Vol.41 No.3
A finite element model for the analysis of a beat-up process is investigated. One of the main purposes of the analysis is to find the beat-up force required to obtain a plain weave of some given density. The proposed weave model includes one warp and two of the most recently inserted wefts. The warp is considered to be elastic while the wefts are assumed to be rigid in the present model. We applied our method to interpret the possible reason of a special type of abnormal structure frequently found in weaving practices, where uneven pickspacing repeats itself periodically. Results from sample calculations suggest a possibility that the special type of the uneven pickspacings can happen even under perfect machine conditions.
정병묵,이성건,안홍태 嶺南大學校 工業技術硏究所 2002 工業技術硏究所論文集 Vol.30 No.1
In the texture manufacturing process, it is very important to uniformly maintain the thickness of yarn because the quality of texture is affected by dint of the quality of yarn. However, the production of chemical yarn is made of more than 10 strands because of productivity. The united yarn has to be splitted into independent strand before making texture. In this process, most of splitting machine has too heavy and varied tension because of its structural problem. To reduce the tension of yarn, this article proposes a splitting machine with a tension controller. The control algorithm is mainly a rule-based fuzzy logic because of its non-linearity and yarn's high velocity. Using this controller, the tension of yarn is 3 or 4 times lower than that of the traditional splitting machine. Through the development of a tension controlled splitting machine, we can get yarn of good quality and expect high productivity because it is possible to reduce the splitting time of yarn.