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경희대학교 천문대 30인치 주망원경 TCS 소프트웨어 개발
문병식,김상준,장민환,민상웅,설경환,문기석,Mun, B.S.,Kim, S.J.,Jang, M.,Min, S.W.,Seol, K.H.,Moon, K.S. 한국천문학회 2006 天文學論叢 Vol.21 No.2
Even though 30inch optical telescope at Kyung Hee Astronomy Observatory has been used to produce a series of scientific achievements since its first light in 1992, numerous difficulties in operating of the telescope have hindered the precise observations needed for further researches. Since the currently used PC-TCS(Personal Computer based Telescope Control System) software based on ISA-bus type is outdated, it doesn't have a user friendly interface and make it impossible to scale. Also accumulated errors which are generated by discordance from input and output signals into a motion controller required new control system. Thus we have improved the telescope control system by updating software and modifying mechanical parts. We applied a new BLDC(brushless DC) servo motor system to the mechanical parts of the telescope and developed a control software using Visual Basic6.0. As a result, we could achieve a high accuracy in controlling of the telescope and use the user friendly GUI(Graphic User Interface).
오용석(Y.S.Oh),문기석(K.S.Moon),김경배(K.B.Kim),한영출(Y.C.Han) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_1
Natural gas-fueled vehicle impoes unique requirements on exhaust aftertretment system. In the CNG vehicle, exhaust hydrocarbon is mainly consist of methane. Methane conversion, which is very difficult for conventional automotive catalysts, may be required, depending on future regulatory direction. In this study, we used a transient one-dimensional model which takes into account the gas-solid heat and mass transfer, axial heat conduction, chemical reactions and the related heat release. We considered many factors affect to methane conversion, and simulated methane conversion efficiency at variable condition.<br/>