• Title/Summary/Keyword: D.W.S method

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A Study on Modeling Heterogeneous Embedded S/W Components based on Model Driven Architecture with Extended xUML (확장된 xUML을 사용한 MDA 기반 이종 임베디드 소프트웨어 컴포넌트 모델링에 관한 연구)

  • Kim, Woo-Yeol;Kim, Young-Chul
    • The KIPS Transactions:PartD
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    • v.14D no.1 s.111
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    • pp.83-88
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    • 2007
  • In this paper, we introduce MDA based Development Method for Embedded Software Component. This method applies MDA approach to solve problems about reusability of the heterogeneous embedded software system. With our proposed method, we produce 'Target Independent Meta Model'(TIM) which is transformed into 'Target Specific Model'(TSM) and generate 'Target Dependent Code' (TDC) via TSM. We would like to reuse a meta-model to develop heterogeneous embedded software systems. To achieve this mechanism, we extend xUML to solve unrepresented elements (such as real things about concurrency, and real time, etc) on dynamic modeling of the particular system. We introduce 'MDA based Embedded S/W Modeling Tool' with extended XUML. With this tool, we would like to do more easily modeling embedded or concurrent/real time s/w systems. It contains two examples of heterogeneous imbedded systems which illustrate the proposed approach.

A study on acceleration / deceleration control and circular interpolation using PLC position control unit (PLC 위치결정 UNIT에 의한 가감속 제어 및 원호보간에 관한 연구)

  • Kim, S.W.;Kim, J.S.;Yoo, J.S.;Ann, J.B.
    • Proceedings of the KIEE Conference
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    • 1993.07a
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    • pp.391-394
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    • 1993
  • The acceleration/deceleration control method and interpolated operating are essential to the servo motor control system. In a few years ago, a floating point DSP chip was used for the purpose of processing a lot of calculated amount. But in this paper, we proposed new acceleration/deceleration control method and circular interpolation algorithm without another floating point DSP chip. The validity of proposed algorithms are verified through computer simulation and experimental result.

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Studies on Quality Evaluation of Crude Drug Preparation(II) -Analysis of Saengmaek-san by Thin Layer Chromatography and High Performance Liquid Chromatography- (생약 복합제제의 품질평가에 관한 연구(제 2 보) -생진산(生賑散)의 품질평가 방법에 관하여-)

  • Hong, N.D.;Kim, J.W.;Won, D.W.;Kong, Y.C.;Kim, N.J.;Joo, S.M.
    • Journal of Pharmaceutical Investigation
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    • v.17 no.1
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    • pp.22-30
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    • 1987
  • Evaluation method of crude drug preparations was studied in Saengmaek-san. Zig-zag TLC scanning profiles and high performance liquid chromatograms were obtained from Saengmaek-san and its each crude drug. A method using TLC densitometry and high performance liquid chromatography was established for the precise determination of ginsenoside $Rb_1$ in Saengmaek-san containing Ginseng Radix. Consequently, ginsenosicle $Rb_1$ content was 0.45-0.48 mg per g of Saengmaek-san. This method was found to be useful for the quality evaluation of oriental medicinal preparations.

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Analysis of HB Type Step Motor using 3D Equivalent Magnetic Circuit Network Method (3차원 등가자기회로망법을 사용한 하이브리드 스텝 모터 특성 해석)

  • Jin, C.S.;Chun, Y.D.;Kim, W.S.;Kim, Y.H.;Lee, J.;Im, T.B.;Sung, H.K.
    • Proceedings of the KIEE Conference
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    • 2001.07b
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    • pp.650-652
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    • 2001
  • The permanent magnet in hybrid step motor is magnetized to the axial direction. Accordingly the 2D analysis method such as 2D finite element method cannot guarantee the analysis accuracy. In this paper, the characteristics of hybrid type step motor are analyzed by using 3D equivalent magnetic circuit network method(3D EMCNM). 3D EMCNM supplements magnetic equivalent circuit by numerical technique using distributive magnetic circuit parameter and 3D EMCNM is used for the accurate and efficient analysis. The validity of the analysis results is confirmed by comparing with the experimental ones.

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A Control Method and Test Results of Utility-Interactive Photovoltaic Power Generation Systems (계통연계 태양광발전시스템의 제어기법 및 연계운전특성)

  • 황인호;안교상;임희천;김신섭
    • The Transactions of the Korean Institute of Power Electronics
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    • v.5 no.2
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    • pp.123-129
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    • 2000
  • This paper desclibes a design method and test results of grid-connected photovoltaic power 당eneration s systems, which consists of solar cells, DCI AC inverter, utility grid. A 50 kW photovoltaic power generation s system including a 3-phase DCI AC inverter is designed and made in order to investigate the system l pelionnance for glid connection. Also the control scheme of a three phase cmrent-controlled PWM inverter W with PI controller is presented by using d-q transformation. The experimental waveforms show that the p proposed system has stable behavior with em unit power factor in utility-interactive operation.

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