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황윤형(Yunhyoung Hwang),이혁기(Hyuckkee Lee),신성근(Seongguen Shin) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This paper describes the strategy on the autonomous lane keeping assistance considering driver’s steering condition. As for the common lane keeping assist system, the lane keeping is achieved through a yaw moment control by differential braking with ESC, or a steering torque control with EPS. This paper suggests the method of harmonization of a differential braking with a steering torque, considering the driver’s steering condition in such way that the system intervention does not disturb the state of driver’s steering and vice versa. The suggested control algorithm is implemented with MATLAB/Simulink, and is evaluated in the simulation experiments with a high precision vehicle dynamics model.
황윤형(Yunhyoung Hwang),이정욱(Junguck Lee),강병주(Byungjoo Kang),이유식(Yousic Lee),김성진(Sungjin Kim),성광모(Kwangmo Sung) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
This paper presents the probabilistic threat assessment framework for pedestrian safety at intersection. The first thing to do for the threat assessment is to predict the trajectory of conflict vehicle. The next is the prediction for the pedestrian. Especially, a stochastic way should be considered to predict the motion of pedestrian because there exists a high degree of uncertainty in the motion of pedestrian. Also, the measurement of the pedestrian motion is prone to noise. This paper suggests the method of trajectory prediction based on the kinematics of vehicle and the motion model for the pedestrian at intersection. Also, a probabilistic threat assessment algorithm considering the uncertainty in sensor measurement.is presented and verified with some simulation result in this study.
황윤형(Yunhyoung Hwang),남찬혁(Chanhyuk Nam),양인범(Inbeom Yang),정기윤(Kiyun Jeong) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
This paper describes the development and validation of in-wheel vehicle simulation model based on the commercial vehicle dynamics platform S/W. The simulation model is consist of in-wheel based powertrain model, full vehicle model and controller model. It is aimed at the validation of control algorithm for the in-wheel vehicle and hardware specific system specifications at the early stage of development. This paper also represents some simulation result for the verification of developed simulation model.
HILS를 이용한 충돌예방시스템(ACC/PCS) 성능평가
황윤형(Yunhyoung Hwang),이혁기(Hyuckkee Lee),기상렬(Sangyoul Ki),양인범(Inbeom Yang) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This paper describes the evaluation of collision avoidance system (ACC/PCS) using HILS (Hardware-in-the-Loop Simulation) system. The HILS system described in this paper emulates a full test vehicle with a vehicle cabin, vehicle model, PDA software and the target collision avoidance system, and further provides the integrated test environment with the additive virtual traffic and sensor for the evaluation of collision avoidance system. All the components of HILS system are connected each other in the CAN network. For the evaluation of collision avoidance system ECU, the test logic having same interface with the ECU is developed so that HILS system can be evaluated and tuned prior to the real ECU test. At the same time, the construction of HILS system with ECU is simplified because the test logic and ECU have same interface. Finally, the vehicle model contains some external module for the interface with ECU/test logic and driver inputs.
차대동력계 연계 시뮬레이션 기반 실차 연비 평가 기술 개발
신성근(Seonggeun Shin),황윤형(Yunhyoung Hwang),이혁기(Hyuckkee Lee) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
Recently, fuel consumption is one of the very important factor of the vehicle. So, many studies to improve the fuel consumption is currently in progress. However, there is a difference between the real-world fuel consumption and official fuel consumption by the its measuring method. To reduce the difference in fuel consumption, various studies for measuring the real-world fuel consumption is required. This paper deals with the method for measuring the real-world fuel consumption in the lab. As a result, we developed simulation-based measurement method to calculate real-world fuel consumption of vehicle with chassis dynamometer.
강병주(Byeongju Kang),황윤형(Yunhyoung Hwang),이정욱(Junguck Lee),성광모(Kwangmo Sung),김성진(Sungjin Kim) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
최근 ADAS 및 자율주행 구현에 있어 능동적 보행자 보호를 위한 보행자 인식 및 추정에 대한 연구가 활발히 진행되어 왔다. 본 논문은 횡단보도 상황에서 보행자 첫 거동(Gait)과 함께 나타나는 신체적 특성들을 분석하여 보행자의 향후 정상속도를 예측하는 방법을 제시한다. 보행자는 동일한 교통신호 환경에서 확률적으로 일정한 거동패턴을 보이며 거동 보폭 변화율 및 하반신 스윙 속도를 기반으로 거동속도 예측이 가능하다. RGB-D센서를 통해 보행자 모션 데이터를 취득하여 위 가정을 검증하였으며, 제안된 보행자 거동예측 파라미터는 교통상황이 복잡한 교차로 인프라를 통한 사고 위험도 판단에 적용된다.