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이홍선(Lee Hong-Seon),임태형(Lim Tae-Hyeong),천세영(Chun Se-Young),권순광(Kwon Soon-Kwang),이창돈(Lee Chang-Don),양순용(Yang Soon-Young) 한국생산제조학회 2007 한국생산제조학회지 Vol.16 No.6
The pressure ripple in most hydraulic systems is the root cause of their noise and vibration. This paper reduced the pressure ripple using side branch hose for an axial piston pump applied to small excavator. First, in calculating open area, a new method using groove area of valve plate is proposed. Simulation model in AMESim environment is developed to verify proposed method, find effective length and diameter of branch hose. Finally, the comparisons with experiment results show that the proposed method is more effective than previous method in reducing the pressure ripple.
안형순(Hyung-Soon An),임태형(Tae-Hyeong Lim) 한국콘텐츠학회 2013 한국콘텐츠학회논문지 Vol.13 No.7
본 연구는 택지개발사업지구에서 조성되는 보행자전용도로가 적정하게 이용되고 있는지를 파악하고, 이를 토대로 향후 보행자전용도로 계획에 필요한 시사점을 제시하는 것이 목적이다. 이를 위하여 광주광역시상무택지개발사업지구를 사례대상지로 선정하고 보행량 조사결과를 토대로 단계적 회귀분석을 실시하였다. 현황조사 및 분석결과를 정리하면, 첫째, 보행자전용도로 활성화에 영향을 미치는 가장 중요한 요인은 보행자전용도로에 접하고 있는 건축물의 출입구 방향인 것으로 분석되었다. 따라서 향후 보행자전용도로 활성화를 위해서는 보행자전용도로변 출입구 설치 의무화 및 건축물 파사드에 대한 고려가 있어야 한다. 둘째, 보행자전용도로에 접하고 있는 건축물 용도가 중요한 변수로 도출되었다. 보행유발용도의 적극적 도입과 보행미유발용도(숙박시설 등)에 대한 입지제한 등이 이루어져야 한다. 셋째, 보행자전용도로간 연속성 확보가 활성화에 영향을 미치는 요인으로 분석되었다. 이를 위해서는 개발초기 입체교차로의 적극적 설치나 평면교차로의 설치가 이루어져야 한다. This investigation aims to examine whether there is currently the proper use of pedestrian malls created in the Land Development Project areas and to come up with some suggestions for the upcoming plan to build them. The Project areas were designated as the subject of a case study to this end and, on the basis of the findings on the pedestrian movement, Stepwise Regression Analysis was performed. These can be summed up as follows. Firstly, the most important factor which had a decisive effect on the activation of pedestrian malls turned out to be the directions of the exits to the buildings adjoining the pedestrian walkways. Hence, careful consideration should be given to the facade of buildings and the obligation to install the exits to the pedestrian malls for the activation of the pedestrian walkways. Secondly, according to the findings, the use of the buildings adjoining the pedestrian malls could be a second-mostimportant variable. The introduction of the facilities that encourage walking and the location restriction on the facilities(accommodation facilities) that do not encourage walking should be done aggressively. Thirdly, securing the continuity between the pedestrian malls could affect the reinvigoration of the pedestrian malls. To achieve this, the crosswalks should be actively built in the early stage of development.
이홍선(Lee Hong-Sun),천세영(Cheon Se-Young),임태형(Lim Tae-Hyeong),김승수(Kim Sung Su),최정주(Choi Jeong Ju),양순용(Yang Soon-Young) 한국생산제조학회 2007 한국생산제조학회지 Vol.16 No.3
The excavator is complex machinery which has widely used in the construction site, deck of harbor and deep sea. The one of important issue of excavator system in recent is an automation of it in order to improve a working efficiency, a convenience working circumstance and work satisfaction. However, since there are large nonlinearities of control circuit, actuating cylinder, joiners of hydraulic units and changing loads etc., it is difficult to develope an automatic excavator system. Therefore, in this study, toy scale pneumatic excavator system is constructed and the remote control system is installed on it, before developing the automatic excavator system. In order to design the control system of the developed pneumatic excavator system, the transfer function is obtained using signal processing method and the controller gains of PID are decided based on CDM(coefficient diagram method). The obtained transfer function and the performance of the proposed control system is evaluated through experiments and computer simulation.
이홍선(Lee Hong-Seon),이민희(Lee Min-Hee),임태형(Lim Tae-Hyeong),천세영(Chun Se-Young),양순용(Yang Soon-Yong) 한국생산제조학회 2006 한국생산제조학회지 Vol.15 No.5
The hydraulic excavators are mainly applied for excavating, public works, quarrying, etc. In some of the construction site, however, they are used for crane works of relatively light materials, although the crane works by the hydraulic excavators are forbidden by law due to the safety reasons. The major construction equipment companies in forward countries have been developing the new systems, e.g. crane works by the hydraulic excavators, and they are working in the construction site. Therefore, the new system of crane works by the hydraulic excavators should be developed for the domestic construction site in order to prevent the accident. In this paper, the fundamental study and experiment are accomplished for the crane system application on the hydraulic excavators.
AMESim를 이용한 유압 굴삭기용 Main Control Valve의 해석에 관한 연구
임태형,최종환,양순용,이병룡,안경관 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-
The hydraulic excavator has been a popular research object for automation because of its multi-workings and economic efficiency. When it works crane tasks, most of disasters happen. The objective of this paper is to design each components and to construct boom, arm, bucket circuit. These models modeled with AMESim show us change of variables and behavior of excavator. Simulation model will be used for simulator of excavator.