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RISS 인기검색어
- 검색키워드
- 저자 : 지상원(J. W. Ji) (검색결과 50 건)
- 무료
- 기관 내 무료
- 유료
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지상원(J. W. Ji),박민수(M. S. Park),장지성(J. S. Jang) 한국동력기계공학회 2009 한국동력기계공학회 학술대회 논문집 Vol.2009 No.11
In this study, position controller designed in the using long transmission line for contrlling pneumatic cylinder apparatus. This apparatus form pneumatic cylinder, control valve, detected pressure and position sensor, transmission lines. In controlling pneumatic cylinder apparatus , short transmission lines don't have an effect on arround system and damping ratio, but long transmission line influence on system characteristic because of line characteristic. In the study, on that score, design position controller, inspect propriety of designing controller.
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지상원(S. W. Ji),장지성(J. S. Jang) 유공압건설기계학회 2013 드라이브·컨트롤 Vol.10 No.4
Pneumatic system is widely applied in various industry because it have a many advantage(low cost, high safety, etc..). For design of pneumatic system, accurate flow measurement is required. In this study, compressible fluid flow measurement apparatus was designed and built. It uses an isothermal chamber that can approximate isothermal condition. Therefore, it can be measured for flow-rate using pressure response of isothermal chamber. As a result, this apparatus can be measured for sonic conductance and critical pressure ratio of pneumatic components and it required less time and energy than conventional flow meter. The effectiveness of the designed apparatus is proved by experimental result.
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지상원(S. W. Ji),장지성(J. S. Jang) 유공압건설기계학회 2013 유공압건설기계학회 학술대회논문집 Vol.2013 No.6
In this study, compressible fluid flow measurement apparatus was designed and built. It uses an isothermal chamber that can approximate isothermal condition. Hence, this apparatus can be measure to sonic conductance and critical pressure ratio of pneumatic components and require less time and energy than conventional flow meter. The effectiveness of the designed apparatus is proved by experimental result.
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ERC[Emergency Release Coupling]의 동특성에 관한 연구
조영진(Y. J. Jo),김주현(J. H. Kim),최지아(J. A. Choi),윤진호(J. H. Youn),박민규(M. G. Park),장지성(J. S. Jang),지상원(S. W. Ji) 유공압건설기계학회 2021 유공압건설기계학회 학술대회논문집 Vol.2021 No.11
The International Maritime Organization (IMO) has enforced NOx, SOx, and PM emission regulations through the International Convention on the Prevention of Pollution from Vessels (MAPOL, 73/78 ANNEX VI). As a response method to environmental regulations for ships, LNG is used as fuel. Accordingly, the demand for LNG as a fuel for ships is rapidly increasing, and the demand for key parts for LNG bunkering to store and transport it is expected to increase significantly.
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지상원(S. W. Ji),오재민(J. M. Oh),정은석(E. S. Jeong),김병곤(B. K. Kim),이일영(I. Y. Lee) 유공압건설기계학회 2015 드라이브·컨트롤 Vol.12 No.1
For testing a newly designed ship"s steering gear, a steering gear test bench with a steering gear to be tested and a load generation part should be prepared. The load given to the steering gear has to be pertinent to the load generated in a targeted ship. In this study, the authors suggest a process of estimating the load given to steering gears in ships. At first, a test for measuring the load in the steering gear of a real ship was conducted. Then, a process was developed to compute rudder driving torque and force by using basic equations including some empirical equations on ship"s steering. The test results and the computation results on the load in the steering gear were compared, As a result, the process suggested in this study for estimating load in ship"s steering gears was verified.
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