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실도로 기반 실증 동향 검토 및 자율주행차를 위한 실증 방법론 제안
강호준(Hojoon Kang),권성진(Seongjin Kwon) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
Large scale Field Operational Tests(FOTs) were introduced a few years ago as an evaluation tool for newly developed automotive systems with the purpose of proving that such systems can deliver real-world benefits. A number of such FOTs have been carried out to evaluate new automotive systems, particularly a variety of Advanced Driver Assistant Systems(ADAS) and V2x related functions or services. These FOTs have proven to be very useful and have been identified as an important method to verify the real-world impacts of newly developed such systems. Europe, North America and Japan have conducted a number of FOTs for several years and have cumulated enormous amount of data through these FOTs. Especially, Europe had developed methodologies for FOT, like FESTA handbook, and has been sharing related information through networking platform, FOT-Net. This paper introduces several overseas FOTs and suggests ideas on preparing FOTs for autonomous vehicle in Korea.
차량 동역학을 이용한 멀티에이전트 기반 교통시뮬레이션 개발
조기용(Kiyong Cho),권성진(Seongjin Kwon),배철호(Chulho Bae),서명원(Myungwon Suh) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The validity of simulation has been well-established for decades in areas such as computer and communication system. Recently, the technique has become entrenched in specific areas such as transportation and traffic forecasting. Several methods have been proposed for investigating complex traffic flows. However, the dynamics of vehicles and their driver's characteristics. even though it is known that they are important factors for any traffic flow analysis, have never been considered sufficiently, In this paper, the traffic simulation using a multi-agent approach with considering vehicle dynamics is proposed. The multi-agent system is constructed with the traffic environment and the agents of vehicle and driver. The traffic environment consists of multi-lane roads, nodes, virtual lanes. and signals. To ensure the fast calculation, the agents are performed on the based of the rules to regulate their behaviors. The communication frameworks are proposed for the agents to share the information of vehicles' velocity and position. The model of a driver agent which controls a vehicle agent is described in the companion paper. The vehicle model contains the nonlinear subcomponents of engine, torque converter, automatic transmission, and wheels. The simulation has proceeded for an interrupted and uninterrupted flow model. The result has shown that the driver agent performs human-like behavior ranging from slow and careful to fast and aggressive driving behavior, and that the change of the traffic state is closely related with the distance and the signal delay between intersections. The system developed shows the effectiveness and the practical usefulness of the traffic simulation.
홍조류, 갈조류, 녹조류를 이용한 바이오에탄올 생산 및 폐 해조류 슬러리의 중금속 생물흡착
선우인영(InYung Sunwoo),라채훈(ChaeHun Ra),권성진(SeongJin Kwon),허지희(JiHee Heo),김예진(Ye-Jin Kim),김지우(JiWoo Kim),신지호(JiHo Shin),안은주(En-Ju Ahn),조유경(YuKyeong Cho),김성구(Sung-Koo Kim) 한국생물공학회 2014 KSBB Journal Vol.29 No.6
The seaweeds with high carbohydrate ratio Gelidium amansii, Saccharina japonica and Enteromorpha intestinalis were used as red, brown, and green seaweeds, respectively. Thermal acid hydrolysis, enzymatic saccharification and fermentation were carried out using those seaweeds to produce ethanol. The ethanol concentrations from red, brown and green seaweed were 14.8 g/L, 11.6 g/L and 9.9 g/L, respectively. After the production of ethanol, the seaweeds were reused to absorb heavy metal. The maximum biosorption ratio was Cu(II) (89.6%), Cr(III) (82.9%), Ni(II) (66.1%). Cu(II) had the highest affinity with 3 waste seaweeds. Red seaweed was verified the most effective substrates to both process.
[특별세션]DIC 액압벌지실험을 이용한 순 티타늄 판재의 소성유동곡선에 관한 연구
김진재(Jinjae Kim),김영석(Youngsuk Kim),권성진(Seongjin Kwon) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
In this paper, the plastic flow curve of commercially pure titanium sheet (CP Ti) has been evaluated using Tensile test and Hydraulic bulge test. The plastic flow curve known as hardening curve is a key on factor needed in conducting finite element analysis for the forming process of sheet material. However, several sheet forming processes lead to the large plastic deformation of which the plastic strain is over the maximum uniform elongation of uniaxial tensile test, for instance, clinch forming, hydroforming, stamping and deep drawing. Therefore, we have performed tensile and a hydraulic bulge test for CP Ti sheet. We also have used and evaluated three method that convert from hydraulic bulge flow curve to tensile flow curve. The measured true flow curve from the hydraulic bulge test can be fitted well by the hardening equation known as Kim-Tuan model.
[차량운동성능부문] Tractor-Semitrailer 차량의 제동특성 프로그램 개발
서명원(Myungwon Suh),박윤기(Yoonki Park),권성진(Seongjin Kwon),양승환(Seunghwan Yang),박병철(Byungchul Park) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently safety systems for the commercial vehicle have been rapidly developed. However, we still have many problems in the vehicle stability and the braking performance. Especially, a commercial vehicle may meet a dangerous braking condition when the vehicle is lightly loaded or empty and when the road is wet or slippery. Under these conditions, the truck can spin out or the tractor can jackknife or the trailer can swing out. To design the air brake system for the commercial vehicle, since the air brake system has many design variables, there must have been intensive researches on a method how to prevent dynamic instability and how to maximize the vehicle deceleration.<br/> In this study, mathematical models of the tractor-semitrailer and the air brake system including an ABS controller have been constructed for computer simulation. Also, simple examples are applied to show the usefulness of the program. Designers can use this simulation program for understanding the braking characteristics such as trajectory, braking distance, longitudinal deceleration, lateral deceleration, and yaw rate on various road conditions.