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- 저자 : 이병윤(ByoungYun Lee) (검색결과 3 건)
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김봉수(Bongsoo Kim),이병윤(Byoungyun Lee),유승범(Sungbem You),박수주(Suju Park) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
Future technology trends of commercial vehicle steering components can be divided into three types. Environmentfriendly technologies for environment-related regulations such as reducing emissions and improving fuel efficiency, and technology for driving convenience using electric steering control systems, and safety technology to protect drivers, passengers, nearby vehicles and pedestrians. Large commercial vehicles require a high-power steering system that used engine-driven hydraulic pump systems (genally used min 120bar, 17Liter/min) compared to passenger cars. In recent technical trend, In order to improve fuel efficiency and realize autonomous driving technology, we designed EHPS and Motor driven electric control actuator with the same structure as C-EPS. Unlike the HPS system, the power used in the EHPS system is the motor, which rotates the gear pump to generate flow and pressure, and the steering oil is delivered to the ball nut gearbox to operate the power steering system through the pitman arm. The advantage of EHPS is that it does not use the engine drive torque, so it improves fuel efficiency by about 1%, and when the pump is connected in parallel, it can secure the flow rate to the main steering. In this process, it is difficult to realize the active autonomous driving technology of the vehicle itself through the steering angle control separately from the driver"s steering intention. Therefore, the motor control device directly connected to the steering wheel is essential, and we can design the actuator system by selecting the package and the required output according to the use conditions. The required steering torque as a general auxiliary steering was about 20 Nm, and the C-EPS type actuator using a worm reducer was manufactured and the performance evaluation was carried out. In this paper, we describe the construction process of the power steering system for commercial vehicles and the design process of the components.
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레이저 감지기술을 이용한 열차접촉사고자 보호장치에 관한 기초연구
안철기(Cheolki Ahn),이병윤(Byoungyun Lee),김상겸(Sanggyum Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, the number of accident that a train collides with a rail trespasser are reported to be more than 200 per year in korea. This kind of accident results fatal wound and death. Because the train runs fast and has heavy weight, the driver can not stop it effectively when he finds a rail trespasser. The casualties of this kind of accidents are increasing especially in urban train. Thus many countries that have advanced railway system endeavor effort to reduce these casualties. In this paper, a rescue device is proposed that has automatic detection device using laser detection technology to find a rail trespasser and airbag system to reduce damage. This concept adopts the ideas of recent researches in the area of automotive engineering and robotics. An airbag system are reported to be somewhat effective against collision accident with pedestrian in the recent researches of auto safety. Many types of combination sensors using laser detection technology are reported in researches of unmanned ground vehicle for outdoor terrain. As detection device, the combination of three sensors, stereo camera, short range laser scanner, long range laser scanner, are used in the proposed approach. As feasibility study of this idea, a detection device and a miniature airbag system is established on a test bed.
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