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RISS 인기검색어
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- 저자 : 지상원(S. W. Ji) (검색결과 67 건)
- 무료
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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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공기압 실린더의 고장분석 및 신뢰성 시험기준에 관한 연구
강보식(B. S. Kang),지상원(S. W. Ji),장지성(J. S. Jang) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Pneumatic Cylinders that are usually applied in the factory automation line have complicated failure cause because they are composed of various elements. In this paper, we performed FMMA(Failure Mode & Mechanism Analysis) and CMA(Criticality Matrix Analysis) of pneumatic cylinders, and then achieved FMECA(Failure Mode Effects & Critically Analysis) and QFD(Quality Function Development). On the basis of these processes, we can derive strategies for conducting reliability test with pneumatic cylinders.
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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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이완 이스탄토(Istanto I, S. W.),지상원(S. W. Ji),김현호(H. H. Kim),이일영(I. Y. Lee),김상호(S. H. Kim),이현철(H.C. Lee) 유공압건설기계학회 2014 유공압건설기계학회 학술대회논문집 Vol.2014 No.9
In this paper linear and nonlinear model of a hydraulic servovalves are analyzed. Linear model use a linearized of continuity equation, and the nonlinear model use a nonlinear equation of continuity equation. Linear model is important and this is one of the method for assessing the local stability of an equilibrium point of a system of nonlinear model. Error in linear and nonlinear models are compared and flowforce effect on the servo hydraulic models are investigated. Computer simulation are included to illustrate the behavior of hydraulic servovalve.
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문준혁(J. H. Mun),이일영(I. Y. Lee),최세령(S. R. Choi),지상원(S. W. JI) 유공압건설기계학회 2018 유공압건설기계학회 학술대회논문집 Vol.2018 No.6
Hydraulic systems are used mainly because the steering gear requires a large power source from the ship`s operation as a key drive that enables the setting and operation of the course. The hydraulic steering is divided into a swash plate control method of a hydraulic pump and a hydraulic valve control method according to a driving method, and classified into a ram and a vane type according to the steering unit. In this study, we construct a simulation model using AMESim S/W and analyze the characteristics of the basic steering system. Also, operation performance and energy efficiency are analyzed according to the steering system. Through analysis of the steering system, the problem of the existing steering system is finally analyzed and the steering is optimally designed.
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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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