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하이브리드 자동차의 과도응답 특성 구현을 위한 동력 시스템 모델링에 관한 연구
박태호(Taeho Park),김현섭(Hyunsup Kim),김지훈(Jihun Kim),한규홍(Kyuhong Han),홍정호(Jeongho Hong),이형철(Hyeongcheol Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
This paper presents a dynamic model of a parallel HEV (Hybrid Electric Vehicle) which can simulate torque vibration during transient maneuvers. The target HEV has and engine clutch between the engine and the traction motor; and has a ISG (Integrated starter & generator) to start the engine after EV(electric vehicle) mode. In this configuration, the drive-train torque vibration during transient maneuver is one of the major issues due to the discontinuity of the engine clutch. However, because of lack of the dynamic model of the system, the research for the issues heavily depends on the actual test; and the control strategy is hard to be designed from the systematic approach. Therefore, as the first step for the development of the systematic supervisory control strategy, this paper focuses on the dynamic modeling and validation of the parallel HEV.
MIL 시뮬레이터를 이용한 6속 AT 기반 2축 병렬형 하이브리드 자동차의 과도상태 해석
김상우(Sangwoo Kim),황현수(Hyunsoo Hwang),김정민(Jeongmin Kim),홍정호(Jeongho Hong),김현수(Hyunsoo Kim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
Model in the loop(MIL) simulator is developed for a 6 speed AT based 2-shaft parallel hybrid electric vehicle(HEV) to investigate the transient characteristics such as mode change, tip-in and tip-out etc. First, powertrain model of the HEV is constructed using AMESim and control algorithm of the HCU is developed based on MATLAB Simulink. Using the AMESim simulator and MATLAB based HCU, MIL simulator is developed. It is found from the MIL simulation results that the transient characteristics such as driveshaft torque, engine and motor torque, clutch engagement state can be effectively evaluated.
병렬형 하이브리드 차량의 과도응답 향상을 위한 제어 알고리즘 연구
김지훈(Jihun Kim),김현섭(Hyunsup Kim),박태호(Taeho Park),한규홍(Kyuhong Han),홍정호(Jeongho Hong),이형철(Hyeongcheol Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
This paper represents the control strategy for the belt-driven ISG system applied to the double-shaft parallel hybrid electric vehicle (HEV). The powertrain of the target vehicle consists of an internal combustion engine, an integrated starter and generator (ISG) to start the engine, a traction motor, and an engine clutch between the engine and the traction motor. The aim of this paper is to develop the control algorithm improving transient response of the target vehicle. The control algorithm is to decrease the transition duration as well as to decrease the drive torque fluctuation of the engine and the traction motor during the mode transitions involving engagement and disengagement of the engine clutch. This paper proposes the torque estimation of the crankshaft to improve the driving torque fluctuation under the model uncertainties.
병렬형 HEV 모드변환 엔진클러치의 접합 시제어 알고리즘 연구
김성민(Sungmin Kim),송민석(Minseok Song),김정민(Jeongmin Kim),홍정호(Jeongho Hong),김현수(Hyunsoo Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
In this paper, a model in the loop(MIL) simulator is developed using co-simulation between AMESim simulator and hybrid control unit(HCU) for a 6 speed automatic transmission parallel HEV. In addition, control algorithms for ISG and engine clutch hydraulic pressure are suggested to reduce the torque change as well as to obtain the fast response when the engine clutch engages for the mode change. Using the MIL simulator, the control algorithms are evaluated. It is found from the simulation results that the ISG maximum torque control strategy provides the better response showing reduced torque variation for WOT launching. It is expected that the MIL simulator can be used in developing the control algorithm for 6 speed AT based parallel HEV.
한규홍(Kyuhong Han),김지환(Jihwan Kim),김현섭(Hyunsup Kim),박태호(Taeho Park),김지훈(Jihun Kim),홍정호(Jeongho Hong),이형철(Hyeongcheol Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
This paper presents the fault detection and isolation (FDI) strategy for a parallel hybrid electric vehicle (HEV). The powertrain of the target parallel HEV consists of an internal combustion engine, an integrated starter and generator (ISG), a traction motor, an ISG belt as a pulley system and an engine clutch between the engine and the traction motor. In this study, the model-based FDI algorithm for the current and the angle sensors in the ISG and the traction motor is developed. In the supervisory controller, another FDI algorithm is also developed through structural analysis of the ISG belt and the engine clutch. This FDI algorithm utilizes a powertrain model composed of five sub-models: the ISG, the ISG belt, the engine, the engine clutch and the traction motor. For the fault detection, analysis of the signal fluctuation during the faulty situation is performed for different scenarios. For getting the computer simulation results of the developed FDI strategy, the powertrain model and the controller of the target parallel HEV are developed to simulate the proposed FDI strategy. Validity and effectiveness of the proposed FDI strategy is shown by the simulation results.
Left pneumonectomy using self-cutting linear endoscopic stapler in a dog
이시은(Si Eun Lee),박효진(Hyojin Park),이채영(Chae-Yeong Lee),최현종(Hyeon-Jong Choi),김효연(Hyoyeon Kim),김민연(Minyeon Kim),홍정호(Jeongho Hong),유도현(DoHyeon Yu),황태성(Tae Sung Hwang),이희천(Hee Chun Lee),이재훈(Jae-Hoon Lee),이동 한국예방수의학회 2021 예방수의학회지 Vol.45 No.4
A 13-year-old mixed dog was referred to the animal medical center, Gyeongsang National University. Lung masses were diagnosed at the left cranial and caudal lobes through diagnostic imaging, and consequently, left pneumonectomy was performed using a self-cutting linear endoscopic stapler. The pulmonary arteries, veins, and bronchus of each lung lobe were sealed and resected at once, and any air leakage or bleeding was not observed after the surgery. Compared to the conventional ligation method, the self-cutting linear endoscopic stapler has the advantage of significantly reducing the operation time and enabling simple and reliable sealing.