• Title/Summary/Keyword: Park Tae-Joon

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Control of MIMO System Using Multiple Fuzzy Logic Controller (다중 퍼지 로직 제어기를 이용한 다변수 시스템의 제어)

  • Seo, Ho-Joon;Seo, Sam-Joon;Kim, Dong-Sik;Park, Gwi-Tae
    • Proceedings of the KIEE Conference
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    • 1996.07b
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    • pp.1076-1078
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    • 1996

  • In this paper, we design the robust controller for MIMO system using multiple fuzzy logic controller. Based on the knowledge of system input/output data, we introduce the simple adaptation laws to approximate the decoupling matrix from input channel to output channel. The proposed control algorithm is applied numerical example.

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Chip-Tool Friction and Shear Characteristics of Cold Drawn Free Machining Steels in Turning (냉각인발된 쾌삭강의 외경선삭시 칩-공구 마찰 및 전단 특성)

  • Lee, Young-Moon;Cho, Sam-Kyu;Choi, Soo-Joon;Song, Tae-Seong;Park, Tae-Joon
    • Journal of the Korean Society for Precision Engineering
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    • v.16 no.12
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    • pp.198-203
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    • 1999

  • In this study, chip-tool friction and shear characteristics of cold drawn free machining steels in turning were assessed. To do this, a newly developed equivalent oblique cutting model was adopted. And for comparison with those of free machining steels, chip-tool friction and shear characteristics of conventional carbon steels were also investigated. The Pb-S free machining steel shows superior machinability to others. In case of the Bi-S free machining steel, the shear stress and the specific friction energy are relatively lower than those of conventional carbon steels, but its shear strain is relatively high, so it does not show any remarkable improvement of machinability.

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