• Title/Summary/Keyword: Textile machinery

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Tension Control of the Let-off and Take-up System in the Weaving Process Based on Support Vector Regression

  • Han, Dong-Chang;Back, Woon-Jae;Lee, Sang-Hwa;Lee, Hyuk-Jin;Noh, Seok-Hong;Kim, Han-Kil;Park, Jae-Yong;Lee, Suk-Gyu;Chun, Du-Hwan
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.1141-1145
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    • 2005

  • This paper proposes a robust tension control algorithm for the let-off and take-up system driven by servo motor which is robust to disturbance and tension variation by using SVR(Support Vector Regression). Quality of textile goods in fiber manufacturing process highly depends on control of let-off, take-up and tension which are essential for constant tension control of yarn and textile fabrics and correct length of them. The physical properties of textile fabrics are very sensitive to several factors(temperature, humidity, radius change of warp beam etc.) which result in tension change. Rapid development of fiber manufacture machine for higher productivity requires control system for let-off, take-up and tension for robustness to sharp tension-variation and quick response. The validity and the usefulness of the proposed algorithm are thoroughly verified through numerical simulation.

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Strength Properties of $Al_2O_3$ Ceramics with Textile Machinery (섬유기기용 $Al_2O_3$계 세라믹스의 강도 특성)

  • An, B.G.;Ahn, S.H.;Park, I.D.;Nam, K.W.
    • Journal of Power System Engineering
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    • v.8 no.4
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    • pp.44-48
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    • 2004

  • For many years researchers have been attempting to establish the relations among the preparation history, structure and properties of ceramics. In this study, the strength property of $Al_2O_3$ ceramics with components and giudes of the textile machinery was investigated. The optimized conditions of ressureless sintering were investigated in order to obtain the maximum strength of $Al_2O_3$ ceramics for using at the textile machinery. As the sintering conditions, $1,400{\sim}1,700^{\circ}C$ of temperatures and $30{\sim}150$ minutes of times were applied. Three-point bending test was conducted on the sintered materials to obtain the strength property. From test results, the optimum sintering temperature has $1,600^{\circ}C$. And the optimum sintering time in $1,600^{\circ}C$ has about 100 minutes.

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