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장익식 ( Ik Sik Jang ),전형순 ( Hyeong Soon Jeon ),하태주 ( Tae Ju Ha ),이재근 ( Jae Keun Lee ) 한국전통조경학회 2013 한국전통조경학회지 Vol.31 No.4
본 연구는 전통구조물의 안정에 미치는 영향에 대해 분석하였다. 우리나라 전통조경공간에서 축석 기둥으로 조성된 담장의기초가 안정함에 따라 오랜 세월동안 무너지지 않고 유지됨을 알 수 있었다. 연구 대상지인 담양 소쇄원의 오곡문 담장(溪墻)은 자연과 조화되는 하나의 전통구조물로 그 어떠한 영향에도 변형됨이 없이 지금까지 유지되어 왔다. 여기에는 우리 선조들의 슬기와 지혜가 곁들어 있음을 짐작할 수 있다. 그러나 전통구조물 재현에 있어 하자발생 빈도가 빈번하다. 이는 전통구조물에서 벗어난 공법으로 약식 적용하였기 때문이다. 따라서 본 연구의 대상인 오곡문 담장이 무너지지 않는 요인을 통해 그 해결 방안을 간접적으로 얻고자 함이다. 아울러연구 방법으로는 물리적 시험과 역학 계산방식의 유추·해석을 통해 다음의 결과를 도출하였다. 첫째, 내적 요인으로 오곡문 담장의 구조를 이루는 부재와 결속 방식이다.1) 기초 지반의 안정이다. 여기서 원지반인 모암의 역할이 크다는 사실과 침하 현상이 없다는 것이다. 2) 수문에 의한 마찰력을 최소화하기 위해 물길을 두 갈래로 분리한 축석형태와 메쌓기 공법을 통한 수문에서의 지내력과범람을 대비하여 우회수로를 만들었다. 3) 하중에 의한 지지력과 내구성에 견디는 구조로 재료의 강도와 축조형태에 있어 각 개체 간의 힘의 분산을 가져오는 마찰력을 최대화하는 공법으로 적용되었다. 둘째, 외적 요인으로 오곡문 담장(溪墻)의 역학 수리 계산식을 통해서 얻은 결과, 비바람과 수문에 의한 영향이 크게 나타나지만, 담장의 구조적 안정에 해칠 만한 힘의 작용이 미흡하다는 결론이다. 따라서 본 연구의 결과, 내·외적 영향에도잘 견디는 구조로 구성된 구조체로 볼 수 있다. 그러나 향후 사후관리 측면과 이상기후로 인한 환경 인자에 의해 무너질수도 있다는 사실이다. In this study, the traditional structure of the impact on the stability analysis. Korean traditional landscape architecture column space of stonework stable composition as the foundation of the fence for a long time been known to fall down and not maintained. The destination of research Ohgokmun Damyang Soswaewon fence(溪墻) which is in harmony with nature is one of the traditional structures that affect its shape without being kept so far came true. This includes our ancestral wisdom and that wisdom can guess guesswork. But I let the traditional reproduction incidence structures frequently. This deviation from the traditional method of construction application of shorthand stand. Thus, the subject of this study, the factors that do not fall down fences Ohgokmun solution is to indirectly gain the weak. In addition, epidemiological studies and the methods of calculation of the inferred physical examination, the results of the analysis were derived through the following. First, the internal factors of the fence Ohgokmun constituting the structural member and the coupling of the scheme. 1) based on stable ground. Greater role in the country rock The fact that the settlement will have no symptoms. 2) to minimize the friction caused by hydrological water to remove the two-pronged process through stone work building form and menu sustaining power in hydrology and flooding made against the bypass channel. 3) due to the load bearing capacity and durability to withstand the strength of the material and the construction of structures in the form of a dispersion of power between each individual to maximize the process of getting traction was applied. Second, external factors Ohgokmun fence the results obtained through the calculation of the dynamics of repair, is greatly affected by the wind and the water gate of the fence, but the action of the structural stability of the lack of power that hurt enough conclusion. In this study, the results of the structure of internal and external influence as well through the structure can be viewed as composed consisting. However, over the next follow-up in terms of climate and environmental factors due to the fact that the fall might.
전기스쿠터용 IPMSM의 집중권 분포권에 따른 운전특성 및 효율 비교
장익상(Ik-Sang Jang),김원호(Won-Ho Kim),배재남(Jae-Nam Bae),진창성(Chang-Sung Jin),이주(Ju Lee) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
In response to the Green Growth, interest of the traction motor is increasing. As Traction Motosr Require wide operation range and high torque density, IPMSMs are suitable for traction applications. In this paper, performance comparison between concentric and distribute winding, with same constraint and requirement.
LC 발전 고진법을 이용한 매입형 영구자석 동기 전동기의 파라미터 계산
장익상(Ik-Sang Jang),김승주(Jin Seung Joo),진창성(Chang Sung Jin),이주(Ju Lee) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.4
Interior Permanent Magnet Synchronous Motor (IPMSM) produces two kind of torque that Magnetic and Reluctance torque. The permanent magnet linkage flux Ψ<SUB>a</SUB> and d-axis and q-axis inductances have an important influence on the torque characteristic of IPMSM. Thus their accurate prediction is essential for predicting performance aspect such as the torque and flux-weakening capabilities. In this paper, L<SUB>d</SUB>, L<SUB>q</SUB> is calculated by LC resonance method with FEM. The results are validated by comparison the L<SUB>d</SUB>, L<SUB>q</SUB> calculated by another method.
HEV용 IPMSM의 집중권 분포권에 따른 특성 및 효율 비교
장익상(Ik-Sang Jang),김원호(Won-Ho Kim),배재남(Jae-Nam Bae),진창성(Chang-Sung Jin),이주(Ju Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Interior permanent magnet synchronous motors(IPMSMs) produce not only the magnetic torque, but also the reluctance torque, which is due to the difference between the d-axis and q-axis inductance , by geometrical rotor structure. Therefore, using flux-weakening control, IPMSMs can be driven at higher speed than surface mount permanent magnet synchronous motors(SPMSMs). As Traction Motosr Require wide operation range and high torque density, IPMSMs are suitable for traction applications. In this paper, efficiency and characteristics are compared with concentric and distribute winding.
PHEV용 IPMSM의 권선에 따른 고조파 특성에 관한 연구
장익상(Ik-Sang Jang),이기덕(Ki-Doek Kim),김미정(Mi-Jung Kim),손병욱(Byoung-Ook Son),방기창(Ki-Chang Bang),이주(Ju Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Interior permanent magnet synchronous motors(IPMSMs) produce not only the magnetic torque, but also the reluctance torque, which is due to the difference between the d-axis and q-axis inductance, by geometrical rotor structure. Therefore, using flux-weakening control, IPMSMs can be driven at higher speed than surface mount permanent magnet synchronous motors(SPMSMs). As Traction Motors Require wide operation range and high torque density, IPMSMs are suitable for traction applications. In this paper, efficiency and characteristics are compared with concentric and distribute winding.
배리어 길이에 따른 매입형 영구자석 동기전동기의 Ld, Lq 파라미터 특성에 관한 연구
장익상(Ik-Sang Jang),김승주(Seung-Joo Kim),진창성(Chang-Sung Jin),김기찬(Ki-Chan Kim),이주(Ju Lee) 대한전기학회 2009 전기학회논문지 Vol.58 No.3
Interior Permanent Magnet Synchronous Motor (IPMSM) produces two kind of torque that Magnetic and Reluctance torque. The permanent magnet linkage flux ψa and d-axis and q-axis inductances have an important influence on the torque characteristic of IPMSM. Thus their accurate prediction is essential for predicting performance aspect such as the torque and flux-weakening capabilities. In this paper, the influence of barrier width on the ψa and Ld, Lq is calculated by FEM analysis. Predictions are validated by comparison the average torques, using Maxwell Stress Tensor method.
우리나라 전통구조물의 형태가 포괄하고 있는 요소에서 수평과 수직과의 상관관계
장익식 ( Ik Sik Jang ),이재근 ( Jee Gun Lee ) 한국화예디자인학회 2012 한국화예디자인학 연구 Vol.27 No.-
This was expressed in the form of foundation in the structure of our traditional space that brings an element of vertical and structural features related research as a new perspective on the correlation of the horizontal type of financial research. Lifeboats on a stable form seen in the skyline of our traditional space Departure traditional artistic works, and elegant and delicate danahham could be channeled inner directed, based on our ancestral wisdom and the wisdom of the fingertips engineering, aesthetic product looking for a relationship of structures, where the principle of sustaining a long time have been preserved ever since has been in the formative artistic perspective to analyze the elements that evoke the tentacles of the common sensibility of tourists chatneun this. Rafters above the traditional structures appear outwardly in the form of facilities, if the bottom of the horizontal elements of the foundation soil. podium and the vertical component of the body consisting of the pillar of wealth. door frame structure of the vertical and horizontal. johapche the top of the eaves. appeared horizontally in a vertical line of elegant tile roof can represent the shape of the curve was a decisive factor horizontal component of ground stability and vertical components of the body is well-woven constructs gave the golden ratio and the creation of harmony with the surroundings from the correlation that you want to define.
철도차량에 이용되는 고효율 3상 유도전동기 설계연구 개발
이중우(Lee Joong-Woo),김광수(Kim Kwang-Soo),김원호(Kim Won-Ho),장익상(Jang Ik-Sang),이재준(Lee Jae-Joon),이주(Lee Ju) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
In today, the energy saving in existing electrical machines used a variety of facilities is very important because the energy shortage becomes a serious social problem. Especially, electrical machines occupy a large percentage of consuming electrical energy and the three phase induction motor used in a railroad system also consume a lot of electrical energy. Therefore the design of high efficiency three phase induction motor for railroad is a essential method to satisfy aspects of enhancing performance of railroad and energy saving in railroad system. The main contents in this paper are the fundamental process of design of high efficiency three phase induction motor and selecting some design parameters to be considered in each step. The results of designed motor is analyzed by using the FEM.