• Title/Summary/Keyword: SamCho

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A Study on the traits of transport good by the rail (철도화물 운송 이용 특성에 관한 연구)

  • Cho, Sam-Hyun;Kim, Ick-Hee
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.1715-1721
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    • 2007
  • The purpose of this study is to analyze traits of transport goods by Rail. Now, many kinds of shipper transports their goods by the Rail. but Rail transport system did not satisfied their requirements. In order to analyze shippers desire, make a marketing strategy for more efficient rail transportation system, make up a questionnaire on transport by rail and analyze by using AHP method.

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Characteristics Investigation of LPM according to Input Waveform of Microstep Drive (마이크로스텝구동 LPM의 입력 파형에 따른 LPM특성 고찰)

  • Kim Myoung-Su;Lee Byoung-Sam;Heo Du-Suk;Cho Yun-Hyun
    • Proceedings of the KIPE Conference
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    • 2002.07a
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    • pp.278-280
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    • 2002
  • Microstep driving method is adopted to reduce the thrust ripple of LPM(Linear Pulse Motor). It controls each phase current to improve the resolution of position. Therefore, the phase current waveform affects the characteristics of LPM in microstep drive. In this paper, the characteristics of LPM was investigated in accordance with phase current waveform.

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