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SimulationX 기반 자동차 semi-active 현가장치의 모델 개발 및 특성 해석
정인태(I. T. Jeong),정동석(D. S. Jeong),정원식(W. S. Jeong),이성민(S. M. Lee),유보연(B. Y. Yoo),장대범(D. B. Jang),서영우(Y. W. Seo),한성민(S. M. Han),이석우(S. W. Lee),여현승(H. S. Yeo),류하오(Hao Liu) 유공압건설기계학회 2022 유공압건설기계학회 학술대회논문집 Vol.2022 No.12
The semi-active suspension system controls the damping force of the vehicle damper to simultaneously improve the steering stability (handling) and ride comfort of the vehicle. In order to improve the ride comfort of a passenger car, performance analysis is required through modeling and simulation adaptation of a semi-active suspension system. This study used SimulationX, a commercial multi-domain analysis S/W, and modeling about 1/4 car of the semi-active suspension system. The damping force was controlled through a given performance of the damper. The developed SimulationX-based semi-active suspension system model is prepared for future controller development research.
병렬형 하이브리드 자동차의 SimulationX 모델 개발 및 연비 시뮬레이션
서영우(Y. W. Seo),한성민(S. M. Han),여현승(H. S. Yeo),이석우(S. W. Lee),류하오(Hao Liu) 유공압건설기계학회 2022 유공압건설기계학회 학술대회논문집 Vol.2022 No.12
Hybrid Electric Vehicles (HEVs) are an important seed in the process of converting from traditional internal combustion engine vehicles to eco-friendly vehicles. HEVs that use two energy sources have a complex structure, and thus, these two energy sources work independently/alternatively/jointly depending on road driving conditions in order to improve fuel efficiency. As HEVs are developed, it is becoming important to understand the operating principles and to interpret fuel economy performance in simulations. This research used simulationX, a commercial multi-domain analysis S/W, to develop a model for a parallel type hybrid vehicles, and implement fuel efficiency analysis. First, the heat engine, battery, electric motor, power train, etc. were modeled in a simulationX environment based on the parallel hybrid vehicle structure. Then, fuel efficiency analysis simulation was performed on driving condition of NEDC (New European Driving Cycle). The developed simulationX model for parallel type hybrid vehicle is prepared to develop a controller for fuel efficiency improvement in the future work.
이석우(S. W. Lee),최영재(Y. J. Choi),허남환(N. H. Hoe),최헌종(H. Z. Choi) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
In silicon wafer manufacturing process, the grinding process has been adopted to improve the flatness of water. The grinding of wafer is usually used by the infeed grinding machine. Grinding conditions are spindle speed, feed speed, rotation speed, grinding stone etc. But grinding condition selection and analysis is so difficult in grinding machine. In the intelligent grinding system based on knowledge many researchers have studied expert system, neural network, fuzzy etc. In this paper we deal grinding condition selection method, Taguchi method and Genetic Analysis.
제품 설계 지원을 위한 디지털 마이스터 전문가 시스템의 설계
강해운(H. W. Kang),남성호(S. H. Nam),홍원표(W. P. Hong),이석우(S. W. Lee),최헌종(H. J. Choi) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
Recently We make a study of the process expert system model in 2005. Process expert system concepts is applied to the digital meister expert system development. Well-designed expert systems imitate the reasoning processes experts use to solve specific problem. Specially, expert systems are used to the engineer in manufacturing industry for the process control, production management and system management. In this paper, we propose the digital meister expert system for product design process in manufacturing industry and we present introduction and contents of design process expert system methodology and software for the air purifier design system.