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Middle Ware를 이용한 네트워크 시뮬레이터와 교통 시뮬레이터의 연동에 관한 연구
강성재 ( Seong-jae Kang ),김태원 ( Tae-won Kim ),백송남 ( Song-nanbae ),정재일 ( Jae-il Jung ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.1
최근 차량 네트워크를 통한 각종 서비스가 주목 받고 있으며 그 중 안전 서비스나 안전 서비스 어플리케이션 등의 테스트와 테스트를 위한 테스트베드에 대한 필요성이 생기고 있다. 본 논문은 네트워크 시뮬레이터와 교통 시뮬레이터 간의 연동을 통하여 실제 차량 통신 환경과 유사한 시나리오를 시뮬레이션 할 수 있도록 구현 하였다. 네트워크 시뮬레이터에서는 실제 차량의 이동성을 충분히 반영하기가 어렵고 대단위의 시나리오를 생성하기 어렵기 때문에 네트워크 시뮬레이터에 차량 이동성 정보 생성을 위하여 교통 시뮬레이터에서 생성 된 정보를 사용 할 수 있도록 하였다. 이러한 서로 다른 시뮬레이터간의 연동은 동기화의 문제가 존재하게 되는데 본 논문에서는 이를 해결하기 위한 각기 다른 세 가지의 동기화 방식을 연구 하였다.
강성재(Seong Jae Kang),임성일(Sung Ill Lim),이병헌(Byung Hun Lee) 한국수처리학회 2001 한국수처리학회지 Vol.9 No.4
The objective of this study is to investigate the possibility of microscreen and ozone for removal red-tide organisms. Ozonated air was bubbled into the reactor through a gas disperser located near the bottom of the column. Filtration equipment was designed by Beaudrey P.C. The results are as follows : (1) the suitable mesh size was 30㎛. (2) the red-tide organisms were removed over 80% within 5min by ozonation and 5㎎ O₃/L·min of injection ozone concentration appeared high removal rate of red-tide organisms per time than 3.5㎎ O₃/L·min, but in removal rate per dosage of ozone, 3.5㎎ O₃/L·min is high than 5㎎ O₃/L·min. (3) The velocity equation of removal red-tide organisms could appeared dC_V/dt=-(2.5×10^(-5))C_V^(2.09)C^(0.93). (4) microscreen and ozone had an effect on red-tide organisms removal.
강성재 ( Seong Jae Kang ),황은주 ( Eun Ju Hwang ),김정숙 ( Jeong Sook Kim ),이병헌 ( Byung Hun Lee ) 한국수처리학회 2004 한국수처리학회지 Vol.12 No.3
This study was conducted to investigate the effect of influent concentrations in SBR process using activated algae. Modified McKinney equation was applied to this study for understanding of results. Influent concentrations affect the active biomass(MaA, MaB) and Algae/Bacteria ratio. The initial Algae/Bacteria ratio of 1.0 were changed to 2.78, 2.18, 1.29 and 0.97 at Case 1(300/50/10), Case 2(300/100/10), Case 3(600/50/10), Case 4(600/100/10), respectively. COD removal efficiency were obtained above 93%, T-N removal efficiency were 49.85% and T-P removal efficiency were 12~67% without aeration, respectively. The results showed that modified McKinney equation application was useful for interpreting the activated algae processes. The results of modified McKinney equation indicated that the fraction of nitrogen removed by denitrification or stripping was increased to the extend of 75.1% with increasing CODcr. And the fraction of phosphorus removal by precipitation was increased to the extend of 77.4% with increasing CODcr.
하반신 마비환자를 위한 동력보행보조기의 퍼지제어 기법 개발
강성재(Sung Jae Kang),류제청(Jei Cheong Ryu),김규석(Gyu Suk Kim),김영호(Young Ho Kim),문무성(Mu Seong Mun) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.2
In this study, we wolud be developed the fuzzy controlled PGO that controlled the flexion and the extension of each PGO’S hip joint using the bio-signal and FSR sensor. The PGO driving system is to couple the right and left sides of the orthosis by specially designed hip joints and pelvic section. This driving system consists of the orthosis, sensor, control system. An air supply system of muscle is composed of an air compressor, 2-way solenoid valve (MAC, USA), accumulator, pressure sensor. Role of this system provide air muscle with the compressed air at hip joint constantly. According to output signal of EMG sensor and foot sensor, air muscles and assists the flexion of hip joint during PGO gait. As a results, the maximum hip flexion angles of RGO’s gait and PGO’s gait were about 16° and 57° respectively. The maximum angle of flexion/extention in hip joint of the patients during RGO’s gait are smaller than normal gait, because of the step length of them shoes a little bit. But maximum angle of flexion/extention in hip joint of the patients during PGO’s gait are larger than normal gait.
최혁재(Hyuk Jae Choi),강성재(Sung Jae Kang),권칠용(Chil Yong Kwon),류제청(Jei Cheong Ryu),이석민(Suk Min Lee),문무성(Mu Seong Mun) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.9
In this study, the control method of assistive robot was developed for the elderly. The control method of gait-assistant-robot was proposed considering the change of COP (Center of Pelves), BOS (Base of Support) and comparative analysis of the moving velocity for the elderly. We analyzed the movement of COP of the body and its velocity of the elderly equipped with manual walker and gait-assistant-robot. As a result, change in COP was greater from left to right than from anterior to posterior; also, the average velocity of the movement of COP and manual walker for manual walker gait was 0.7(m/s). Therefore, it is necessary to concern more on the left-right balance and synchronization of the velocity of COP.