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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.
곽상운,정준영,김준수,윤국진,정원식,서정일,Kwak, S.W.,Jeong, J.Y.,Kim, J.S.,Yun, K.G.,Cheong, W.S.,Seo, J.I. 한국전자통신연구원 2017 전자통신동향분석 Vol.32 No.3
최근 스마트 디바이스를 통한 일인형 미디어 소비의 증가와 초 고화질 미디어 서비스를 위한 획득, 압축, 전송 및 재현 관련 기술이 발전함에 따라, VR(Virtual reality) 미디어는 사용자에게 높은 몰입감과 현장감을 제공할 수 있는 차세대 미디어 형태중 하나로 거론되고 있다. 이러한 VR 미디어 시장에서의 요소기술 선점을 위해 MPEG(Moving Picture Experts Group), 3GPP(3rd Generation Partnership Project), DVB(Digital Video Droadcasting)와 같은 세계 유력 표준화 단체에서는 관련 기술검토 및 유스케이스 수집 등을 포함한 표준화 준비를 활발히 진행하고 있다. 본고에서는 상기 표준화 단체들의 표준화 동향을 살펴보고, 이를 통해 관련 핵심 요소기술들의 연구 개발 현황을 확인하고자 한다.
최형일,정원삼,박싱일,김난희 조선대학교 환경공해연구소 2004 環境公害硏究 Vol.18 No.-
With improvement of the social life, noise and vibration, two of the habitat factors occurring in apartment buildings, gradually become more of a social problem. Causes of the pollution and its propagation paths are investigated in this study and counter measures are proposed to reflect at the early stage of planing and design through a case study for future apartment building design. Noise and vibration caused by the mechanical facilities of the apartment building are measured. The conclusions of this study are as followings. 1. The major causes of noise and vibration are combustion gas and heating apparatus, respectively. Noise and vibration may be delivered to the households by a complex process of the facilities. 2. To reduce the noise and vibration, countermeasures for propagation paths are provided and the estimated reduction of noise and vibration is presented in this study. 3. The building floors in this study are made of light-weight prefabricated concrete slab. Its isolation capacity of a crashing sound is L-80. This is the average level within 17 buildings made of light-weight forming concrete.