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하이브리드 자동차의 모드 변환 엔진클러치 과도상태 분석과 토크 제어에 관한 연구
황현수(Hyunsoo Hwang),김상우(Sangwoo Kim),양동호(Dongho Yang),홍정호(Jungho Hong),김현수(Hyunsoo Kim),황성호(Sungho Hwang) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
2-shaft parallel hybrid electric vehicle(HEV) drive train changes driving mode electric vehicle(EV) mode to HEV mode with a engine clutch. There is a torque variation that causes a driver discomfort. In this paper, Cosimulation environment that is HEV drive train modeled with AMESim in detail to describe a torque variation, and controller developed with MATLAB/Simulink is developed. To reduce discomfortable torque variation, Engine torque strategy before engine clutch engaged, and motor torque strategy after driving mode is changed, and the strategy using engine and motor torque strategy are proposed.
EMB(electromechanical brake) 시뮬레이터 개발
조치훈(Chihoon Jo),황성호(Sungho Hwang),김현수(Hyunsoo Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, a EMB simulator is developed. In order to develop the simulator, dynamic models of the DC motor, reduction gear, screw tread gear, pad and brake disk are obtained using Bondgraph. Performance simulations are carried out using the EMB simulator developed with MA TLAB SIMULINK and motor torque, motor rotational displacement, clamping force, pad and disk compression displacement are calculated. It is found from the simulations that the EMB motor should be controlled to generate negative torque in order to decrease the clamping force. The EMB simulator developed in this study can be used to design the EMB.
조치훈(Chihoon Jo),황성호(Sungho Hwang),김현수(Hyunsoo Kim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
In this paper, a clamping force control algorithm is presented along with a consideration of the frictional characteristics and the estimation of the clamping force for a planetary reduction gear type EMB. The frictional model is developed by including the frictional effect of the motor, planetary gear, and screw thread. Since the clamping-force estimation requires the distance of the contact gap between the pad and the disk, an initial gap-distance control algorithm is proposed that uses the gradient change of the motor torque. This paper is concluded with a discussion of the performance of the control algorithm by comparing the simulation results with experimental results.