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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.
[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.