Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Identification of the Dynamic Behavior of Sliver by the Roller Drafting(ll) - Estimation of the Digital Model Parameters for the Thickness Behavior of the Output Sliver

롤 드래프트에서의 슬라이버 동적 거동의 동정(II) 출력슬라이버 굵기 거동에 대한 디지탈 모델의 계수 추정

  • 최봉돈 (경희대학교 공과대학 섬유공학과) ;
  • 허유 (경희대학교 공과대학 섬유공학과)
  • Published : 1995.03.01

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Abstract

The roll draft mechanism effects not only the quality of the yarn, but also the manufacturing efficiency in the yarn formation processes. The regularities of slivers and fiber bundles can improve the continuing process by doubling and drawing, where the roll draft mechanism plays the most important role. In this research the dynamic behavior of the output sliver thickness in roll drafting was modeled and the model parameters verified experimentally. As the results of the research, it reveals that 1) the dynamic thickness change shows different behaviour according to the type of the input variables(i.e. ; input sliver thickness, draft ratio), 2) the dynamic model has the 8th order with transportation lag time (395 $\times$5.3msec) when a strand of the input slivers is broken down and 3) the variation of the draft ratio effects the thickness of the output sliver in the form of the 3rd order system with the transportation lag time (955 $\times$5.3msec) in the circumstances of the delivery speed of the output sliver, 25m/min.

Keywords

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