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한인우,이석인,이재오,이장명 제어로봇시스템학회 2011 제어로봇시스템학회 각 지부별 자료집 Vol.2011 No.7
This paper presents a method to control a two-wheeled inverted pendulum and it focus on system modeling by Lagrange equation, comparing performance between traditional PD controller and PD + Fuzzy controller. The angle and angle change are used as input to controller in order to calculate the appropriate motor force to balance the robot. The proposed approach uses combination of PD and Fuzzy to react quickly and precisely. The experiment results indicate that proposed controller is more valuable than traditional PD controller in controlling the two-wheeld inverted pendulum.
한인우,김강민,강동일,이병철,Han, In-Woo,Kim, Kang-Min,Kang, Dong-Il,Lee, Byeong-Cheol 한국천문학회 2009 天文學論叢 Vol.24 No.1
We present a method to improve the RV (radial velocity) measurements accuracy by using telluric lines. Telluric lines are used to estimate the wavelength scale drift over the detector of the spectrograph. In the case of BOES, the Echelle spectrograph at BOAO (Bohyunsan Optical Astronomical Observatory), the wavelength scale drift can be several hundreds m/s over 24 hours. Due to the wavelength scale drift, the RV measurements accuracy of BOES is limited to several hundreds m/s. By estimating the wavelength scale drift by telluric lines, we can remove its effect to improve the RV measurements accuracy to about 40 m/s.
BOES 데이터를 이용한 정밀 시선 속도 추정 프로그램 RVI2CELL 개발
한인우,김강민,이병철,Han, In-Woo,Kim, Kang-Min,Lee, Byeong-Cheol,Valyavin, G. 한국천문학회 2007 天文學論叢 Vol.22 No.3
In this study we present basic principles and features of RVI2CELL, a precise RV (radial velocity) estimation program to process stellar spectra obtained through iodine cell. RVI2CELL is very robust and fast program. The instrument profile can be modeled as a sum of Gaussian functions or a non-parametric arbitrary shape. The RV accuracy estimated by observation of a RV standard star Tau Ceti indicates about 9 m/s.
한인우,김광복,오우석,박근창,이경훈 한국수산해양기술학회 2022 수산해양기술연구 Vol.58 No.3
This study calculated the on-site measurement (Tier 4) of greenhouse gases emitted during the production stage of major fishing periods that utilize set nets and bamboo weir fishing boats. In addition, using theoretically calculated results (Tier 1), the emission factor presented by the Intergovernmental Panel on Climate Change (IPCC) was comparatively analyzed. On average, carbon emissions for each operating period in the bamboo weir and set net were calculated to be 0.16 and 3.58 kg CO2 time-1, respectively; and the measurement values (Tier 4) for each tool were about 4-17 times lower than their respective theoretical values (Tier 1). Significant differences were found based on engine performance. As port entry, port departure, and operating periods of the vessels show negligible variation with short distances, the operation of the vessel engine was considered as the main variable for carbon emissions in anchovy set net fishing. 본 연구에서는 정치망과 죽방렴 어선을 대상으로 주요 어업 기간 생산단계 과정에서 발생하는 온실가 스 배출량의 현장 측정 결과값(Tier 4)을 산정하고, IPCC 에서 제시한 배출계수를 계산한 이론계산 결과 값(Tier 1)과 비교 및 분석하고자 하였다. 정치망과 죽 방렴 어업에서 평균 조업시간별 탄소 배출량은 각각 3.58, 0.16 (kg·CO2/cycle)로 산정되었으며, 각 어업별 실측값(Tier 4)은 이론값(Tier 1)에 비해 각각 4배 및 17배 정도로 적게 발생되었다. 기관 성능에 따라 많은 차이가 나타났으며, 멸치 정치성 어업은 어선의 입·출 항 및 조업시간이 거의 일정하고 단거리를 이동하므 로 선박기관의 가동 유무가 탄소 배출량의 주요 변수 로 고려된다.