http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Growth studies of chromium thin films using real - time spectroscopic ellipsometry
이용달(Yongdal Lee),정지용(Jiyong Jung),방경윤(Kyoungyoon Bang),오혜근(Hyegeun Oh),안일신(Ilsin An) 한국진공학회(ASCT) 1999 Applied Science and Convergence Technology Vol.8 No.3(2)
고속 실시간 분과 엘립소미트리를 이용하여 크롬 박막의 성장을 연구하였다. 이 장비는 1.3 eV에서 4.5 eV에 걸쳐 512개의 {Δ(hV), Ψ(hv)}를 가진 스펙트럼을 20 msec 이하의 속도로 연속하여 측정할 수 있는데, 크롬 박막 성장에 적용하였을 때 박막의 성질뿐만 아니라 공정과정에 관련된 정보까지 얻을 수 있었다. 각기 다른 증착조건에서 증착률 및 광학적 특성의 시간적 변화를 구할 수 있었으며 공정에서 대기 노출로 인한 오염과정을 보여줄 수 있었다. High speed real-time spectroscopic ellipsometry was employed in order to characterize the growth of chromium thin film. This instrument can collect 512 points of {Δ(hv), Ψ(hv)} spectra from 1.3 to 4.5 eV with acquisition and repetition rates of 20 msec or less. When this instrument was integrated into the chromium thin film growth, we could obtain not only the information on film properties but also the details of the processes. We deduced the growth rates and the evolution of the optical properties of chromium thin films under several preparation conditions. We also demonstrated the contamination process of chromium thin films caused by air exposure.
자동 정속 주행 차량의 변속 패턴 보정 기법 소프트웨어 개발
이현섭(Hyunsub Lee),신창우(Changwoo Shin),임원식(Wonsik Lim),차석원(Sukwon Cha),이용달(Yongdal Lee),김정욱(Jeongwook Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Shift pattern in automatic vehicles is usually revised by actual vehicle driving which includes some information such as traction force, driving cycle, throttle opening. In order to adopt appropriate shift pattern to object vehicle, base map of shift pattern should be fixed by various road environment. However, too much time and money will be spent in utilizing handmade procedure. In this study, tuning software of auto-cruise shift pattern can calculate base map of shift pattern prior to actual or vehicle calibration. Velocity samples, cruise signals, incline values are selected from driving cycle. Then, shift patterns nearing samples can be updated by tuning logic. Appropriate driving sample can change one of shift patterns which are up or down-shift pattern.
GDI 엔진의 연비개선 및 성능향상을 위한 가변연압 연료시스템 개발
최필선(Philsun Choi),류동명(Dongmyoung Ryoo),류부열(Buyeol Ryu),이용달(Yongdal Lee),장진욱(Jinwook Jang) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Conventional Fuel pump is DC motor based and is operating at a constant speed and constant pressure for engine high speed and high load condition. So, there is a energy loss at a commercial operating condition. To improve fuel efficiency of vehicle, Fuel pump current consumption should be reduced. In this paper, A New BLDC motor based fuel pump is developed and variable Fuel Pressure control system is applied to test vehicle. As a result, Fuel pump current consumption is reduced and vehicle fuel efficiency is improved.