http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
펄스 출력 구현이 가능한 디지털 제어의 SCR형 CO<sub>2</sub> 용접시스템의 개발
은종목,최규하,Eun, Jong-Mok,Choe, Gyu-Ha 대한용접접합학회 2014 대한용접·접합학회지 Vol.32 No.1
SCR(Thyristor) type $CO_2$ welders have widely used for the welding process of heavy industries such as shipbuilding and plant. Since the industrial fields of shipbuilding and plant are usually exposed to severe welding condition with lots of dust, extreme temperature, high humidity and vibration, it is not recommended to use inverter type welder despite its state-of-the-art technology. Many sophisticated functions in the inverter welder may not work due to malfunction of its sensitive components. Hence this study focused on digitalization of SCR $CO_2$ welder by making use of microprocessor for SCR phase control. By this application, fine control of output of the $CO_2$ welding systems is achieved. Also pulse output mode of operation is realized and its verification is carried out with aluminum sample welding. The experimental results showed sound weld bead. The front operation panel provide user with numerical parameter settings and monitors. It will help precise weld process monitoring and control with digital value.
직선형 프로세스 파이프 내면 오버레이 GTAW 용접시스템 개발
은종목,이영규,Eun, Jong-Mok,Lee, Young-Kyu 대한용접접합학회 2014 대한용접·접합학회지 Vol.32 No.2
In this research, GTA overlay welding system is developed for inside of straight pipes in various diameter. It can be applied to oil, ship building and plant industry, especially pipes connected to pressure vessels, for the purpose of cost reduction by cladding inside of pipes with corrosion and heat resistant alloys such as stainless steel or Inconel. Developed system consists of GTA power source, torch, wire feeding system, automatic arc length adjusting device, CCD camera and cooling unit. Two types of pipe inside overlay welding system are developed. One is for maximum 3m pipe length with 3 inch ~ 12 inch pipe outer diameter. Another type can be applied to maximum 12m pipe length with 7 ~ 24 inch OD. Developed system successfully produced inside cladded pipe and the results are shown through cross sectional images of the pipes.
리튬 폴리머 배터리용 급속 충 방전 시스템의 설계 및 특성 연구
반충환(Choong-Hwan Ban),권완성(Wan-Sung Kown),이영진(Young-Jin Lee),한동화(Dong-Hwa Han),은종목(Jong-Mok Eun),최규하(Gyu-Ha Choe) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.5월
본 논문에서는 Ni-Cd, Ni-MH에 비해 전압과 온도특성, 에너지저장 밀도가 높으며 리튬 이온배터리에 비해 누액과 폭발의 위험성이 없는 리튬폴리머 배터리를 사용하여 급속 충 방전 시스템의 설계와 배터리 온도 특성을 연구하였다. 급속 충 방전 시스템은 3상 PWM 컨버터와 강압 컨버터(풀브릿지 컨버터)를 이용하여 CC/CV(정전류/정전압) 제어를 통하여 급속 충 방전 시스템을 설계 하였으며, 이로 배터리의 충방전 특성을 실험으로 입증하였다.