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오승규(SeungKyu Oh),황재호(Jaeho Hwang) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
최근의 시트의 개발은 승객의 안전과 편의성의 증대에 많은 기술이 발전되고 있다. 특히, 승객의 착좌 거동자세를 판별하여 에어백을 제어하는 승객식별장치, 액티브 헤드레스트와 같은 안전시스템과 시트히터 및 파워시트 등 다양한 옵션의 편리성을 갖는 시트의 안전화 및 전자화가 빠르게 진전되고 있다. 본 논문에서는 이러한 시트의 최근의 동향을 논하고자 한다. Recently, due to technological evolutions and social demands, automotive seats are much enhanced in terms of occupants safety and convenience. As a result, the option rates are rapidly growing especially for occupants protection systems and electronics systems. This paper presents an overview of current evolution on seat technologies covering the safety devices as OCS(occupant classification system) and active head restraint system.
오승규(Seungkyu Oh),이강원(Kangwon Lee),이종일(Jongil Lee),김영우(Youngwoo Kim),김형수(Hyoungsoo Kim),김인동(Indong Kim),장진희(Jinhee Jang) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This paper presents results of performance evaluation of UCC(Unified Chassis Control) system and subsystems. UCC system is composed of ESC(Electronic Stability Control), AFS(Active Front Steer) and EAS(Electronic Air Suspension) system. Each subsystem functionality is presented by literature survey and benchmarking. And each subsystem and UCC functions are evaluated. Vehicle tests are performed with high/low friction surface and various vehicle speed. And vehicle model is developed for SIL(Software in the Loop) simulation. Vehicle parameters are measured with specific facilities and realized with vehicle dynamics analysis software. HIL(Hardware in the Loop) simulator is developed with realtime HIL simulator, UCC subsystem hardware and software model including vehicle model. In this paper, not only vehicle performance evaluation results but also vehicle modeling process and HIL simulator development process. SIL and HIL simulation is also used for UCC and subsystem performance evaluation. At last, UCC control strategies and future work for mass production are presented.
어드밴스드 에어백에 있어서 패턴인식 승원분류시스템의 개발
오승규(SeungKyu Oh),김도윤(DoYun Kim),황재호(JaeHo Hwang) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_2
As injuries induced by airbag deployment had become a critical issue, revisions to FMVSS 208 were made to mandate the introduction of advanced airbag which can protect occupants of varying statures. In this paper, To achieve this goal was introduced OCS(occupant classification system) to specification and system structure. Therefore, This paper presents an overview of current OCS technologies and pattern recognition type OCS.
HIL & SIL Simulation을 이용한 AFS System의 성능 향상을 위한 제안
오승규(Seungkyu Oh),노지훈(Jihoon Roh),이강원(Kangwon Lee),이종일(Jongil Lee),김영우(Youngwoo Kim),김형수(Hyoungsoo Kim),김인동(Indong Kim),장진희(Jinhee Jang) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
This paper presents proposals of performance improvement of AFS(Active Front Steer) system. AFS system is a subsystem of UCC(Unified Chassis Control) system which is composed of AFS, ESC(Electronic Stability Control), EAS(Electronic Air Suspension) systems. In this paper, AFS system is focused and proposals for AFS system performance improvement are introduced. First, configurations, functionalities and control algorithms of AFS system are introduced by literature survey results. Through these results AFS system control algorithm is proposed. And this algorithm is developed and validated using SIL(Software in the Loop) simulation. Finally, this AFS control algorithm is validated using HIL (Hardware in the loop) simulator. And concept and configuration of this HIL Simulator is introduced. With this HIL simulator not olny AFS system performance but also UCC system performance is evaluated.
Mini-Spare 타이어를 고려한 ESC 성능변화에 관한 연구-1
오승규(Seungkyu Oh),이종일(Jongil Lee),이강원(Kangwon Lee),노지훈(Jihoon Roh),김영우(Youngwoo Kim),김형수(Hyoungsoo Kim),김인동(Indong Kim),장진희(Jinhee Jang) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Temporary mini-spare tires are common standard equipment on motor vehicles while run-flat tires and tire repair kit are offered as standard equipment on some motor vehicles. This paper describes ESC (Electronic Stability Control) system performance with mini spare tire equipment in winter test site. ESC system should recognize mini spare tire equipment location within specific time and control brake pressure properly to control vehicle understeer and oversteer. ESC performance changes due to mini spare tire location. In this paper, worst case for mini spare tire location is found with subjective and objective evaluation. The principle conclusion of this paper is ESC system should have characteristics that do not degrade low coefficient handling and stability even if mini spare tire location affects vehicle performance.
오승규(SeungKyu Oh),김도윤(DoYun Kim),금명훈(MyoungHun Keum),황재호(JaeHo Hwang) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As injuries induced by airbag deployment had become a critical issue, revisions to FMVSS 208 were made to mandate the adoption of advanced airbag which can protect occupants of varying statures. As a result, OCS(occupant classification system) has become a crucial factor in advanced airbag technologies. This paper presents an overview of current OCS technologies and a license trend of occupant sensing.
차량의 Spin-out 영향을 고려한 UCC 시스템 성능향상을 위한 제안
정명철(Myungchul Jung),오승규(Seungkyu Oh),이종일(Joingil Lee),노지훈(Jihoon Roh),김영우(Youngwoo Kim),김형수(Hyuoungsoo Kim),김인동(Indong Kim),장진희(Jinhee Jang) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
In this paper, a proposal for performance improvement of unified chassis control(UCC) system considering the spin-out effect of the vehicle has been presented. In the UCC system, ESC (Electronic Stability Control), AFS (Active Front Steering), and EAS (Electronic Air Suspension) are included. In this paper, main focus on the test is concentrated into spin-out aspect of the vehicle because spin-out of the vehicle is a main reason to occur fatal injuries like a secondary collision in the highway. NHTSA has announced that Sine with Dwell Maneuver is the basis test to pass for the NHTSA FMVSS-126 regulation and this maneuver is severe enough to produce spin-out for most vehicles without ESC. With such reason, the Sine with Dwell maneuver was selected to evaluate spin-out effect of the vehicle. Before the UCC system test, each independent system performance check has been done by benchmarking test. Base on the test results, it is proposed that control strategy of each subsystem and UCC system. The final purpose of this paper is to improve vehicle performance with overcoming each sub-system performance limit and reduce spin-out effect on the UCC vehicle.
트레일러를 장착한 차량의 Natural Sway Response에 관한 연구
이종일(Jongil Lee),오승규(Seungkyu Oh),노지훈(Jihoon Roh),이강원(Kangwon Lee),김영우(Youngwoo Kim),김형수(Hyoungsoo Kim),김인동(Indong Kim),장진희(Jinhee Jang) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
In this paper, dynamics and stability of vehicle in the yaw plane are examined through 3-DOF vehicle model using standard methodology SAE J2664. This test procedure is proposed evaluation method of natural sway response of a particular trailer. The coupling between vehicle and trailer as two pivoted rigid bodies has been investigated, in view of concerns that the coupling strength varies as vehicle-trailer parameters changing. The changed dynamic characteristics are affected by rotation about the yaw axes and transitions in the lateral direction. Due to the natural sway response of trailer, dynamic characteristics of the vehicle-trailer show unique responses when the impulse steer is applied in the yaw plane motion. In this research, the simple 3-DOF model is proposed to identify the characteristics of the natural sway response. The simulation results show the response of vehicle-trailer based on various trailer’s parameters. As a result, the mathematical model of 3DOF model is proposed and evaluated through J2664. Based on the results of this paper, we could propose a basis model of vehicle-trailer estimator for further research.
차량거동 추정을 위한 관성센서의 위치에 따른 ESC 성능변화에 관한 연구
이종일(Jongil Lee),오승규(Seungkyu Oh),노지훈(Jihoon Roh),이강원(Kangwon Lee),김영우(Youngwoo Kim),김형수(Hyoungsoo Kim),김인동(Indong Kim),장진희(Jinhee Jang) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
In this paper, a effect of IMU(Inertia Measurement Unit) sensor position variation is studied to evaluate stability control performance. The stability control adds the ability to assist the driver in negotiating understeer and oversteer by using IMU sensor, and by adding corrective braking and engine torque to the vehicle as appropriate. The stability control is related to the sensor accuracy to provide driver and vehicle dynamic information to the system’s electronic control unit. The sensor position is affected measuring and estimating vehicle dynamic characteristics regarding stability control. Due to kinematic constraints of IMU sensor, the measured signal presents distorted vehicle response. In this paper, the 2-DOF vehicle model is representing to estimate the vehicle characteristics, and the yaw moment controller is implemented using simplified 2-DOF Vehicle model. The stability control is proposed to identify response of vehicle with various sensor offset. The simulation result shows the response of vehicle with proposed the yaw moment controller and studied the vehicle stability regarding sensor position effect. As conclusion, the stability control with 2-DOF model is evaluated through evasive double land change maneuver.