http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김진훈(J. H. Kim),이수종(S. J. Lee),이우현(W. H. Lee),김정렬(J. R. Kim) 한국동력기계공학회 2009 한국동력기계공학회 학술대회 논문집 Vol.2009 No.11
Technology of vehicle industry has been developing and it is required a better vehicle performance than before. Therefore, the consumers are asking not only an economic efficiency, functionality, polished design, ride comfort and silence but also a driving stability. The ride comfort, silence and driving stability are influenced by the size of vehicle and various facilities. But the principal factor is a room noise and vibration sensed by a driver and passenger. Thus, the NVH of vehicle has been raised and used as a principal factor for evaluation of vehicle performance. The primary objective of this study is an optimized design of powertrain mounting system. To optimized design was applied MSC.Nastran optimization modules. Results of dynamic analysis for powertrain mounting system was investigated. By theses results, design variables was applied 12 dynamic spring constant. And the weighting factor according to translational displacement and rotational displacement applied 3 cases. The objective function was applied to minimize displacement of powertrain. And the design variable constraint was imposed dynamic spring constant ratio. The constraint of design variable for objective function was imposed bounce displacement for powertrain.
비선형 특성을 적용한 파워트레인 마운팅 시스템의 마운트 전달력 해석
김진훈(J. H. Kim),이수종(S. J. Lee),이우현(W. H. Lee),김정렬(J. R. Kim) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The primary objective of this study is to truly understand reaction force be due to engine exciting force. Exciting forces of the engine apply a source of the vehicle NVH(Noise, Vibration, Harshness). To understand reaction force was applied MSC.Nastran software. Analyzed frequency response analysis of powertrain mount system. First, engine exciting force was applied field function. Also nonlinear characteristics was applied field function : such as dynamic spring constant and loss factor. And nonlinear characteristics was applied CBUSH. Generally characteristics of rubber mount is constant frequency. But characteristics of hydraulic mount depend to frequency. Therefore nonlinear characteristics was applied. Powertrain mounting system be influenced by powertrain specification, mount position, mount angle and mount characteristics etc. In this study, we was analyzed effects of powertrain mounting system. And we was varied dynamics spring constant and loss factor of mounts.
김진훈(J. H. Kim),이수종(S. J. Lee),이우현(W. H. Lee),김정렬(J. R. Kim) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The primary objective of this study is to truly understand exciting forces of the in-line 4 cylinders engine. Exciting forces of the engine apply a source of the vehicle NVH(Noise, Vibration, Harshness). To understand exciting forces, first was governed theoretical equations for single cylinder engine. And this theoretical equations was programming using MATLAB software. To compare theoretical analysis value, was applied MSC.ADAMS software. To determined the specification of engine(2,000㏄, in-line 4) was applied ADAMS/Engine module. And this specification for engine was applied ADAMS/View and MATLAB software. The geometry model for ADAMS/View analysis was produced by the 3-D design modeling software. After imported 3-D model, each rigid body was jointed suitable. Under idle speed for engine, was analysed. The results of analysis are fairly well agreed with those of three analysis method. Using MATLAB software proposed in this study, engine exciting fores can be predicted. Also using ADAMS/Engine module and ADAMS/View software, engine exciting forces can be predicted.
이재기,신상권,이수종,남상식,Lee, J.K.,Shin, S.K.,Lee, S.J.,Nam, S.S. 한국전자통신연구원 2001 전자통신동향분석 Vol.16 No.4
본 논문은 ACE2000 시스템 소프트웨어의 Release 시점을 예측할 수 있는 최적 배포문제로, 시스템의 안정도를 평가해 볼 수 있는 측면에서 소프트웨어 최적 배포문제에 대해 살펴보고 평가기준을 제시하여 제품의 적기 공급 및 개발자원의 효율적 이용 측면을 분석한다. 즉, 신뢰성 평가척도와 개발 비용을 고려한 최적 배포문제를 기술하였다. 또 여러 가지 소프트웨어 신뢰도 성장모델 중 지수형 모델을 근거로 한 소프트웨어 개발비용과 신뢰성 평가기준을 고려한 배포시기를 결정하여 보았다.
미들웨어와 UML을 활용한 교환 소프트웨어의 개발과 관리
이재기,신상권,이수종,남상식,Lee, J.K.,Shin. S.K.,Lee, S.J.,Nam, S.S. 한국전자통신연구원 2001 전자통신동향분석 Vol.16 No.5
본 논문은 대형 ATM 스위칭 시스템인 HANbit ACE2000 시스템의 소프트웨어를 개발하고 시스템 개발 시 필요한 각종 소프트웨어 컴포넌트들을 효율적으로 개발 및 등록, 관리하기 위해 도입된 미들웨어와 객체지향 설계 개념을 이용한 UML을 적용하여 프로그램의 에러를 줄이고 개발자와 관리자간의 규약에 의한 체계적인 종합개발 및 관리 방안에 대한 특성과 각 기능에 대해 살펴본다. 또 이것을 활용하여 ACE2000 시스템에서 개발, 등록 관리되고 있는 소프트웨어에 대해 소개함으로써 대형 시스템 개발에 유용하게 이용되도록 한다. 특히, 대형 시스템 개발에 적용된 개발체계 및 개발환경을 언급함으로써 유사 프로젝트 수행 시 추가 개선사항이나 개발환경 개선에 참고가 되도록 하였다.