http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
주행정보를 이용한 플러그인 하이브리드 자동차의 동력원 최적제어
이대흥(Daeheung Lee),정종렬(Jongryeol Jeong),서호원(Howon Seo),차석원(Sukwon Cha) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Optimization based control methods for Plug-in hybrid electric vehicles require the knowledge of an entire driving cycle and an elevation profile to obtain optimal performance. In this paper, the method using ITS information for prediction of the future driving cycle, and the optimal control strategy based on Pontryagin’s Minimum Principle (PMP) are investigated in order to minimize fuel consumption on the trip distance. To predict future driving patterns, Dynamic Programming theory is proposed for the calculation of the vehicle speed with respect to the driving distance with ITS information. Simulation results show that this approach guarantees the best performance under reasonable condition and the minimization of the fuel consumption on the trip distance between origin and destination.
이대인(Daein Lee),이대흥(Daehung Lee),임원식(Wonsik Lim),박영일(Yeong-il Park) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
In this paper, relates generally to a motorcycle and more particularly to a hybrid motorcycle including an electric motor in addition to an engine. Vehicle of the type using a gasoline engine as a drive source are chiefly available at present. However, vehicle of the type using an electric motor as a drive source are required at location where the occurrence of an exhaust gas must be avoided. A motor-driven vehicle, however, has an inconvenience in that is has an increased body weight and a shortened running distance. To cope with such an inconvenience,, there is an increased demand that a hybrid vehicle including an electric motor in addition to an engine be developed. Especially, This paper deals with an power splitter of planetary gear for hybrid motorcycle of drive train. Power splitter is an important part, because it is properly distributed of engine and motor power. Here we introduce a control strategy of power divider
EV 성능개발을 위한 SILS 기반의 PT 버추얼 환경 적용
이대흥(Daeheung Lee),최석환(Seokwhan Choi),우동현(Donghyeon Woo),이예은(Yeeun Lee),방재성(Jaesung Bang),유재석(Jaesuck Yoo),민성환(Sunghwan Min) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
In a situation in which the electronic control unit (ECU), components, and software of a vehicle are increasingly diversified and complicated, there is a time and cost limitation to test vehicle performance manually in a real vehicle environment. In this paper, in order to develop the powertrain performance of an electric vehicle, we consider the simulation environment using the virtual vehicle control unit (vVCU) for virtual calibration and optimization through a number of critical element technologies. As a result of this, we introduce some examples which are applying virtual optimization and calibration in the early stages of production development. The applied cases show significant M/H savings and it can reduce development time by approximately 40% for APS required torque mapping and others.
유성기어식 하이브리드 동력전달계의 모드 변환에 따른 동특성 해석
이대흥(Daeheung Lee),양호림(Horim Yang),박영일(Yongil Park),차석원(Sukwon Cha) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The Transient characteristics affect to a passenger and driver in a vehicle when a hybrid vehicle changes a driving mode which is motor(EV) mode, engine mode, hybrid mode, etc. In this study, the analysis of transient characteristics for a HEV powertrain is carried out and the ride quality of the vehicle at the situation of mode change is analyzed. To perform a dynamic analysis, we construct the dynamic model by using ADMAS and define situations as mode change.
ITS 정보를 이용한 차량 속도 프로파일 예측 알고리즘 개발
이대흥(Daeheung Lee),서호원(Howon Seo),정종렬(Jongryeol Jeong),차석원(Sukwon Cha) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
The global solutions of energy management of plug-in hybrid electric vehicles depend on future driving conditions. This paper investigates a real-time methodology to predict long-horizon preview speed information for plug-in hybrid vehicles. To obtain the speed profile for future driving, Dynamic Programming (DP) method using distance based technique is investigated with considering some constraints which are traffic information on each trip segment. If it is realizable to obtain the precise information from the ITS and GIS, the prediction of the vehicle speed on the fixed trip distance can be possible in advance, and the result is considerably similar to actual driving pattern.
최적화 기법을 이용한 상용 하이브리드 차량의 동력원 용량 설계
이대흥(Daeheung Lee),정종렬(Jongyeol Jeong),신창우(Changwoo Shin),박영일(Yeongil Park),차석원(Sukwon Cha) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
In heavy-duty HEV(hybrid electric vehicle) that has usually two power sources such as chemical and electrical energy, It is an important and difficult issue to quantify the component size and the fuel-economy, however, there is no standard method. In this paper, we present a component sizing method for heavy-duty hybrid system by considering efficiencies and performance of the entire system and reliability of power sources. The suggested method sets, first of all, 'feasible region' and chooses available 20 combinations of power sources. And then, we simulate a fuel economy by using Dynamic Programming to propose the optimal component size according to the driving cycles.
이대흥(Daeheung Lee),정종렬(Jongryeol Jeong),신창우(Changwoo Shin),박영일(Yeongil Park),차석원(Sukwon Cha) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
This paper presents the energy consumption of a mid-size electric vehicle (EV) with respect to various driving motors as well as the gear ratio for its drive system. It is essential to analyze the vehicle system in order to choose the proper component size meeting the target performance in the early stages of EV technology development. In this study, the minimum size of the electric driving motor is evaluated based on vehicle dynamics, which is able to satisfy the maximum speed, the grade ability and acceleration performance. And backward-looking simulation for prediction of the energy consumption of the vehicle is carried out through selection of three candidates for the driving motor and gear ratio. The results show that the EV with an 80kW electric motor and 2-speed transmission is better than other systems in terms of vehicle efficiency with meeting the target performance.
이대흥(Daeheung Lee),정종렬(Jongyeol Jeong),신창우(Changwoo Shin),박영일(Yeongil Park),임원식(Wonsik Lim),차석원(Sukwon Cha) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
With the additional power sources of electric motors, hybrid electric vehicles have flexibilities in managing and splitting their power to get the higher performances. In this paper, the engine/motor power split ratio algorithm is designed to develop the supervisory control method for heavy-duty parallel HEVs. And we presented a method for producing PSR line through DP. With this algorithm, engine/motor power split line is expressed as 2-dimensional map and using the developed driving control method, driving simulation is performed to evaluate vehicle performance and fuel economy. According to the simulation results, heavy -duty hybrid vehicle is superior to conventional vehicle(BUS) in fuel economy.