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양승국(Seung Kook Yang),이주(Ju Lee) 한국조명·전기설비학회 2015 조명·전기설비학회논문지 Vol.29 No.3
In order to avoid the electrical fire, AFCI(Arc Fault Cirruit Interrupter) has been obligated to be adopted in the United States of America since 2002. A study was carried out on how to detect Arc. In this paper, The propose is high-frequency signal detection methods and RSSI(Received Signal Strength Indication) signal processing algorithm for Arc detection. and the electrical characteristics were verifying.
양승국(Seung-Kook Yang),신명호(Myoung-Ho Shin) 한국조명·전기설비학회 2009 한국조명·전기설비학회 학술대회논문집 Vol.2009 No.5월
2002부터 미국에서 전기화재 보호를 위하여 AFCI(Arc Fault Circuit Interrupter)사용이 의무화 되었으면 중성선의 선로저항을 이용하여 아크를 검출하는 방식의 AFCI의 경우 중성선 선로저항의 저항온도계수에 대한 온도보상이 필요하다. 이러한 온도보상회로를 주문형반도체(ASIC)에서 구현하는 방안을 제시학 ARC 신호에 대하여 시뮬레이션하여 전기적 특성 및 온도특성을 검증하였다. In order to protect the electrical fire, AFCI(Arc Fault Cirruit Interrupter) was obligated to adopted in United States of America since 2002. AFCI using by line resistor of neutral trace needs to compensate the resistance variation of the line resistor by temperature variation. In this paper, the ASIC including the temperature compensation circuit is implemented. The successful implementation is verified by showing the effectiveness of an electric and a temperature characteristics for ARC signals by simulation results.
적응형 보쉬공정(Adaptive Bosch Process)을 이용한 식각된 바닥면 연구
이승용(Seung-Yong Lee),양승국(Seung-Kook Yang),김한형(Han-Hyoung Kim),유한석(Han-Suk Yoo),신상현(Sang-Hyun Sin),장동훈(Dong-Hoon Chang),이일항(El-Hang Lee),오범환(Beam-Hoan O),이승걸(Seung-Gol Lee),박세근(Se-Geun Park) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
We do not use dedicated Bosch process equipment of high cost, it is uses Bosch process that fit existent ICP(Inductively Coupled Plasma) equipment. Bosch process which is method of deep silicon etching is connected repeatedly in using SF? Plasma for etching process and using C₄F? Plasma the deposition process. However, between etching bottom layer and side wall not verticality and curved layer is formed. It is used about this curved layer phenomenon. because of considering gas fraction, temperature, substrate voltage, process time etc. It is used about this curved layer phenomenon and suggested optimum process condition. Standard process for study of process gas used SF? and Ar, and source power 600W, substrate voltage used -200V. Deposition process used C₄F? gas, and source power 600W, substrate voltage did not used. Process substrate temperature makes via 0℃ and progressed study. Through these processing condition, we manufactured mold for NIL(Nano Imprint Lithography) process.
허승진(Heo Seung-Jin),정영섭(Chung Yeong-Seop),양승국(Yang Seung-Kook),구정서(Koo Jeong-Seo),송달호(Song Dal-Ho) 한국철도학회 1999 한국철도학회 학술발표대회논문집 Vol.- No.-
Extruded alummum sections are used to the light construction of the rail vehicles structures. However, the research works on the crashworthy design of the extruded aluminum sections are not published sufficiently. In this paper, the impact energy absorption characteristics of extruded alummum sections are investigated by crash simulation and test. The optimized energy absorbing studies are also performed based on the selected design parameter variations of the sectional shapes and the dimensional ratios.
E-ICP와 ICP를 이용한 MIS(Mo/HfO₂/Si) Capacitor의 Plasma Etching Damage 연구
유한석(Han-seok Yoo),양승국(Seung-kook Yang),김한형(Han-hyung Kim),이승용(Seung-yong Lee),신상현(Sang-Hyun Sin),박세근(Se-Geun Park) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
Characteristics of HfO₂ and Mo are compared using ICP and E-ICP. E-ICP that used axis magnetic field to ICP to improve plasma density is improved etch selectivity of Mo and HfO₂ than ICP. We analyzed plasma etching damage causing in etch process to manufacture MIS(Mo/HfO₂/Si) Capacitor - comb pattern with the same area but different periphery length. As a result, leakage current of E-ICP was larger than ICP. Through these result, E-ICP was improved selectivity of Mo and HfO₂ because axis magnetic field increased plasma density, but E-ICP had characteristics decreasing of uniformity, electron shading effect and selective increase of ion charge.
함상환(Sang-Hwan Ham),김광수(Kwang-Soo Kim),이중우(Joong-Woo Lee),양승국(Seung-Kook Yang),엄석기(Suk-Kee Um),이주(Ju Lee) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
This paper presents the thermal characteristics of interior permanent magnet synchronous motor (IPMSM) for traction. In other to be a reliable traction system, electromagnetically and thermally characteristics of IPMSM are derived correctly, First of all, electromagnetic characteristics of the IPMSM at maximum torque and rated speed are calculated for estimating heat sources. Using results of electromagnetic behavior, thermal analysis of IPMSM is derived.