http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임다미 ( Tami Im ),강기호 ( Kiho Kang ) 한국실천공학교육학회 2017 실천공학교육논문지 Vol.9 No.1
본 연구에서는 코리아텍 사례를 바탕으로 대학형 일학습병행제에 선행경험학습인정을 도입하기 위한 실질적인 준비 과정과 그 결과물을 분석하고 시사점을 도출하고자 하였다. 또한 선행경험학습인정과 관련된 국내외 선행 연구 및 사례들을 종합적으로 정리함으로써 국내 다른 교육기관들이 선행경험학습인정을 도입하고자 할 때 고려해야 할 사항들에 대한 이해를 높이고자 하였다. 본 사례 연구 결과를 바탕으로 보다 많은 교육기관들의 성공적인 선행경험학습인정 정착을 위해 필요한 제도적 지원, 문화적 지원, 대학 내부의 지원 방안을 제안하였다. The purpose of this study is to analyze the actual preparation process and outcomes of applying RPL in University Dual System based on KOREATECH’s case. A comprehensive literature review on prior research and cases was described in this study to assist Korean educational institutions who might be interested in adopting RPL into their organizations. Furthermore, three different levels of support were suggested based on the results of this study for successful adoption of RPL in Korea. Support from national system level, sociocultural level, and university level should be considered carefully for the success of RPL.
EKF를 이용한 BLDC 모터 구동기 인버터의 고장 검출 및 분리
김선기(SunKi Kim),성상만(SangMan Seong),강기호(Kiho Kang) 제어로봇시스템학회 2014 제어·로봇·시스템학회 논문지 Vol.20 No.7
The inverters used to drive Brushless DC motors (BLDC) include switching devices such as FETs and the faults in FETs cause severe performance degradation in systems where a BLDC acts as actuator. This paper presents a fault detection and isolation method for the FETs of an inverter for BLDC motor control systems, which is based on the EKF (Extended Kalman filter). Firstly, an equivalent circuit model for a BLDC motor plus its inverter system was derived. Secondly, a state-space equation was established, where the on-resistance of the FETs is expressed as a state variable and the EKF equation estimates the on-resistance. If the estimated resistance differs greatly from the known value, it can be asserted that there is a fault on that FET. Thirdly, the local convergence of the established EKF was proved. Finally, through the experiments, the performance of the proposed method was verified. The results show that the on-resistance is estimated close to the value specified in the FET data sheet in normal operation, whereas the estimated resistance is a much larger value than the normal one in case an FET fault occurs. Therefore, it is confirmed that the proposed fault detection and isolation method works appropriately in real systems.
조현철(Hyunchul Cho),김성현(Sunghyun Kim),강기호(Kiho Kang),이기훈(Kihoon Lee),반영환(Younghwan Pan),정지홍(Jihong Jung) 한국HCI학회 2008 한국HCI학회 학술대회 Vol.2008 No.2
시대가 변하고 생활수준이 향상됨에 따라 현대인들은 문화에 대한 관심이 더욱 커지게 되었다. 이는 고도 산업 사회에 이르러 "현대인의 의식구조는 개인의 삶에 대한 가치에 큰 비중을 두므로 서 양적인 물질 충족에서 생활 전반의 질적 향상으로 이행되고 있다" (서태양, 차석빈(1995), 여가론, 서울:대왕사)는 점에서 최근 현대인들의 문화 질에 대한 관심이 높아 짐을 알 수 있다. 이러한 움직임은 참살이 운동이나 환경 운동, 몸 짱 열풍 등 문화 전반에서 삶의 질을 높이려는 모습을 쉽게 볼 수 있다. 또한 외국문화와 자국문화의 공존은 음식 메뉴를 더욱 다채롭게 하여 보다 새롭고 다양한 식기에 대한 연구를 필요로 하고 있다. 이에 사람들의 차 및 찻잔 이용 행태를 조사하여 보다 차 종류에 따라 각각의 차에 어울리는 음악을 계공 하여 차를 더욱 즐겁게 즐길 수 있는 인터랙티브 한 찻잔 컨셉을 도출하였다. 도출된 컨셉은 도자 공예 프로세스에 적용 하여 제작 하였다. By the change of the times and higher living standards, modern people are becoming interested in life value and culture. On this, in consideration of researches in behavior of people use teacup and drink tea; I develop a concept of interactive teacup which provides music of proper mood for people who drink and enjoy a cup of tea. The concept teacup is produced by adopting the ceramic craft process.
황재규(Hwang Jae-Gyu),김영민(Kim Young-Min),강기호(Kang Kiho) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
Since it is essential for traction motors to reduce size and weight to achieve given traction effort, they need high input voltage. But the lack of input voltage occurs periodically due to the characteristics of train system. Therefore traction inverters use over-modulation PWM to maximize inverter"s voltage gain. On the other hand. IGBT inverters can use higher frequency twice than GTO ones, which resulted in the need for novel optimal synchronous PWM strategy. This paper suggests that linearly-compensated overmodulation / optimal synchronous PWM strategy and also the simulation results of the method for a real traction motor-intertia model are presented.
BGA형 반도체 패키지의 위치정렬용 영상처리기법 오차의 통계적 분석 방법
김학만(Hak-Man Kim),성상만(Sang Man Seong),강기호(Kiho Kang) 제어로봇시스템학회 2013 제어·로봇·시스템학회 논문지 Vol.19 No.11
Pick and placement systems need high speeds and reliability for the position alignment process of semiconductor packages in picking up and placing them on placement trays. Image processing is usually adopted for position aligning where finding out the most suitable method is considered most important aspect of the process. This paper proposes a method for judging the performance of different image processing algorithms based on the PCI (Process Capability Index). The PCI is an index which represents the error distribution acquired from many experimental data. The bigger the index, the more reliable the results or the lower the deviation. Two compared and candidate methods are Hough Transform and PCA (Principal Component Analysis), both of which are very suitable for oblong or rectangular type packages such as BGA’s. Comparing the two approaches through a CPI with enough experimental results leads to the conclusion that the PCA is much better than the Hough Transform in not only reliability, but also processing speed.