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승용차의 통합된 샤시 제어시스템에 대한 차량동역학적 해석
허승진(S.J.Heo),원종진(C.J.Won),배현규(H.K.Bae),황성호(S.H.Hwang) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_1
This paper presents a vehicle dynamic analysis of an integrated chassis control system for a passenger car. Anti-lock brake system(ABS). electronic controlled suspension(ECS) and four wheel steering system(4WS) are introduced as typically applicable chassis control systems. The 16 DOF vehicle dynamics software is. developed to simulate the complex driving maneuvers of a vehicle with integrated chassis control systems. Simulation results show that the vehicle ride comfort, handling and braking performance can be improved more effectively by the integrated chassis control system than by the sub-control system only.<br/>
차량 동역학 해석 프로그램 AutoDyn7을 이용한 차량 주행 시뮬레이션 및 시험 평가
허승진(S.J.Heo),탁태오(T.O.Tak),김상섭(S.S.Kim),유완석(W.S.Yoo) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_2
A vehicle dynamic analysis program AutoDyn7 (Automobile Dynamics in G7) is developed during the G7 project with respect to "development of integrated software for the chassis system design and analysis"<br/> In this paper, computer simulations of the selected vehicle maneuver are performed using AutoDyn7 S/W. Simulation results are compared with the results of driving tests with experimental handling vehicle for validation and evaluation of the developed S/W AutoDyn7. It is expected that the vehicle dynamic analysis program AutoDyn7 is effectively applicable to design and analysis the chassis system in the early design stage of vehicle development.<br/>
승용차용 파워 스티어링 시스템의 설계 변수 변화에 따른 차량의 조향특성 해석
황성호(S.H.Hwang),김홍석(H.S.Kim),허승진(S.J.Heo) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Power steering systems play an important role for the vehicle handling characteristics and driver's steering center feeling during straightforward driving situation.<br/> In this paper, the mathematical modelling and analysis of the rotary valve. which is the main component of power steering systems. are performed. Also, the effects of design parameters on the vehicle steering characteristics are studied by computer simulations of a 3-dimensional vehicle model associated with steering systems.<br/> The results obtained can be applied to the development of advanced power steering systems for passenger cars such as electronic controlled power steering systems.<br/>
[구조강도부문] 가속내구시험기법 응용 바퀴현가기구 콘트롤암의 내구수명예측 해석 및 최적화설계
윤중흠(J.H.Yoon),허승진(S.J.Heo),임종순(J.S.Lim) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_2
For latest automotive industry, it is important of quickly develop new product according to variable demand. For reducing a term of new product development, it is required to use virtual engineering at an early development stage. Especially, the durability life prediction technique has a very important role to optimize the chassis components and vehicle structures.<br/> In the paper, as a exemplary application, the wheel suspension control arm was analyzed and optimized on the aspect of weight reduction and durability performance improvement based on virtual testing w.r,t the accelerated durability test technique.<br/> <br/>
원종진(J.J.Won),허승진(S.J.Heo),이종선(J.S.Lee),이헌주(H.J.Lee) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper weight optimization design strategies of electric vehicle structure with aluminium space frames are studied. Strain energy estimation technique is presented for weight reduction of electric vehicle structurre with aluminium space frames. By using the technique with finite element optimizer(SUMT). weight optimiztion desigh of vehicle structure could be effective performed under the consideration of static and dynamic structural stiffness.<br/>
[論文] 4륜 조향시스템이 차량의 주행역학적 특성에 미치는 영향
심정수(J. S. Shim),허승진(S. J. Heo),유영면(Y. M. Yoo) 한국자동차공학회 1990 오토저널 Vol.12 No.3
Equipments of passenger cars with modern technologies are gaining their importance. Related with such developments, the four-wheel steering system (4WS) was introduced recently to a few passenger cars in the market. The most important research goal on this new steering system is improvement of active safety, in other words, improvement of handling characteristics of vehicle stability and manoeuvrability.<br/> This paper presents a computer-based study about the effects of 4WS system on the vehicle handling characteristics. A simple bicycle model of 2 d.o.f.is used for the development of four wheel control algorithms of 4WS system, and the rear wheel control strategies are applied to a complex vehicle model of 16 d.o.f.for simulation of selected ISO-driving tests. <br/> The 4WS systems, which reduce the sideslip angle at the mass center of vehicle to almost zero, show much improved handling characteristics compared to that of the conventional 2WS system. These 4WS systems, however, result in vehicles with eigen-steer characteristics of extreme understeer behaviour.