http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
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.
김태현 ( Kim Taehyon ),황성호 ( Hwang Sungho ) 대한체육학회 2021 대한스포츠융합학회지 (jcses) Vol.19 No.1
As female interest in physical activities has increased recently, the number of females enjoying sports has suddenly increased. On the contrary, female students tend to avoid physical activity, which leads to a break in physical activity. physical activities during one’s student days is important because it becomes the base of everyday physical activity participation in the future, and further, the base for becoming a healthy citizen. At this point in which various programs to encourage female students' physical activity have emerged, a measuring tool is needed to determine whether these programs are suitable for female students or whether they are programs characterized by female students. Thus, it is important to understand what compromises female students’physical activities and to develop reasonable tools that can measure this. The results that were deduced through the study processes above are summarized as follows. First, female student friendly physical activities are defined as the following: physical activities that allow for female students to participate by their own will, due to changed perception and attitude, coming about from female student collaboration and consideration. This is done through various and interesting contents and material that made just for female students, that also reflect psychological and physical characteristics in the study strategy and methods. Second, as a result of conducting exploratory factor analysis on female student friendly physical activities, a total of 24 questions and 7 factors were deduced (collaboration/consideration, incitement, esthetics, participation, facilities, perception, and attitude). Third, confirmatory factor analysis was conducted on the 6 factors (excluding esthetics) deduced from the exploratory factor analysis. As a result, the 6 factors had goodness of fits that were in accordance with standards, and thus construct validity and cross validity were confirmed. The female student friendly physical activity scale that was developed by this study can be said to be a tool that has validity and reliability in measuring female student physical activities. In conclusion, with these study results, the meaning of female student friendly physical activity scale development was shown and implications were presented for follow-up studies.
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.