http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이일영(I. Y. Lee),손제목(J. M. Son),신행복(H. B. Shin),손정훈(J. H. Son) 유공압건설기계학회 2010 유공압건설기계학회 학술대회논문집 Vol.2010 No.6
In establishing a simulation program for hydraulic valves, it is always a big obstacle to incorporate correctly flow forces on valve body into the simulation program. This paper suggests a method to estimate flow forces on spool in proportional directional/flow control valves with spool structure. Furthermore, suggests a way to obtain simulation program for spool valves, in which flow force mechanism is fully reflected.
이일영(I. Y. Lee),손제목(J. M. Son) 한국동력기계공학회 2009 한국동력기계공학회 학술대회 논문집 Vol.2009 No.11
This paper deals with a modeling technique of a proportional directional control valve for fluid power system. In the valve model using AMESim, nonlinearity in valve area and a control loop with spool position feedback are incorporated. Flow forces on a spool are hard to handle in spool valve analyses. In this study, the authors suggest a procedure to estimate steady state flow force in spool valves. The effectiveness of the procedure is identified by simulations.
파일럿 밸브가 주 스풀에 동심 내장된 2단 반향/유량 제어밸브의 특성
이일영(I. Y. Lee),손제목(J. M. Son) 유공압건설기계학회 2010 유공압건설기계학회 학술대회논문집 Vol.2010 No.10
This study suggests the numerical model of a two stage directional/flow control valve with the main spool having a coaxially built-in pilot spool. Through numerical simulations and experiments, the characteristics of the valve under the steady state operation and dynamic operation are investigated. In addition, effects of some design parameters on the valve performances are shown.