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배터리 교환식 전기 버스용 휠 모터 구동 시스템의 해석 모델 개발
전광기(Kwangki Jeon),황현수(Hyunsoo Hwang),최성진(Sungjin Choi),김덕진(Deokjin Kim),이춘범(Chunbeom Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
The city buses with diesel engines are the significant air pollution source in a big downtown. There are a lot of efforts to replace the city bus driven by diesel engine with the clean bus driven by CNG(Compressed natural gas) or alternative energies like an electric power. In this study, the analysis model about a exchangeable battery electric bus driven by wheel-motor system was developed. And an electric energy capacity required by electric bus was examined. The developed analysis model will be effective to discuss the durability and the reliability about fault affects.
전자 브레이크를 적용한 연료전지자동차 회생제동 시스템의 신뢰성 평가기술 개발 PART-(1)
전광기(Kwangki Jeon),황현수(Hyunsoo Hwang),최성진(Sungjin Choi),양동호(Dongho Yang),황성호(Sungho Hwang),박희람(Heeram Park),최세범(Seibum Choi) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
The demand of the green car such as hybrid electric vehicle, fuel cell electric vehicle and pure electric eehicle has been rising dramatically. The key part is the regenerative braking system in the energy saving technology of gren car. And electronic braking system has been developed along with the advance of the electronic control technology. The reliability about the electronic braking system is very important because it is concerned with the safety of vehicle. But the regulation of the reliability assessment test for the regenerative braking and electronic braking system is not sufficient enough. In this paper, FCEV with regenerative braking system and electronic braking system(EWB, EMB) has been modeled to develop the reliability assessment technology. With a lot of ABS brake regulations and FMEA results about the regenerative braking system and electronic braking system, the reliability assessment scenarios have been developed. This scenarios have been applied to the performance simulation and it is shown effective to evaluate the reliability of green car regenerative braking with electronic braking system.
전광기(Kwangki Jeon),최성진(Sungjin Choi),고웅희(Woonghee Ko),박정원(Jeongwon Park) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
Cornering maneuvers with reduced body roll and without losses in comfort are heading the wish list of car manufacturers. In addition to this, driving safety can be improved considerably with Active Roll Control(ARC) systems. The ARC system can control body roll angle by using DC motor actuators installed in the center of front and rear stabilizer bars. Full vehicle analysis models have been developed using an ADAMS/Car and a CarSim S/W, and these vehicle models have been validated using vehicle test. The ARC controller has been evaluated with two kinds of control algorithm. One has been designed using a slide mode control law based on a roll model and the other has been designed using a estimated lateral acceleration and target roll angle map data. Co-simulations have been conducted by using the Matlab simulink and the validated CarSim vehicle model to evaluate the performance of the ARC control algorithms. From the simulation results, it is shown that the proposed ARC control system can provide with improved vehicle comfort.
전자 브레이크를 적용한 연료전지자동차 회생제동 시스템의 신뢰성 평가기술 개발 PART-(2)
전광기(Kwangki Jeon),황현수(Hyunsoo Hwang),최성진(Sungjin Choi),양동호(Dongho Yang),황성호(Sungho Hwang),박희람(Heeram Park),최세범(Seibum Choi) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
The demand of the green car like hybrid electric vehicle, fuel cell electric vehicle(FCEV) and pure electric vehicle have risen dramatically. The key technology is the regenerative braking in the energy saving technology. And electronic brake has been developed along with the advance of the electronic control technology. The reliability about the braking system is very important because the braking system is concerned with safety of vehicle. But the regulation is not sufficient enough. In this study, to develop the reliability assessment technology FCEV model with regenerative braking system and electronic braking system(EWB, EMB) was developed. The reliability assessment scenarios about regenerative braking system and electronic braking system is developed using ABS brake regulations and FMEA results. This scenarios ware applied to the performance simulation of the FCEV with the regenerative braking and the electronic braking system. And the fail-safe control strategy of a EMB was suggested and verified.
GPS를 이용한 차량 전복 경고 및 자동제어 시스템 알고리즘 개발
전광기(Kwangki Jeon),최성진(Sungjin Choi),신동현(Donghyun Shin),이백행(Baekhaeng Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, a system algorithm to warn vehicle rollover and implement auto-braking system by using GPS(Global Positioning System) is proposed. This system can give a driver warning the presence of sharp curve and vehicle rollover possibility by using GPS data and digital geographic road information data in advance. Additionally this system can communicate with ESP(Electronic Stability Program) to reduce the speed of a vehicle automatically in case of need. ADAMS vehicle simulation is used to verify the critical speed and safe speed of the curves to be expressed by both curvature and road friction. The rollover warning and auto-braking system can give drivers safe driving circumstance and be effective for the prevention of vehicle rollover accidents.