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황태훈(Taehun Hwang),정태영(Taeyoung Chung),이규훈(Kyu Hoon Lee),유은영(Eun Young You),여태정(Tae-Jung Yeo) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Due to the vehicle electronic and development of communication technologies, Besides the basic functions supporting the weight to the vehicle and mitigating the road impact, Tire is adding the additional function such as the TPMS(Tire Pressure Monitoring System). In addition, recently research of the intelligent tire system capable of measuring the tire force have been actively. Yet only the leading technology in the development stage, however, launching of the prototype is expected in the near future according to leading companies and excellent domestic and international research institutions . In this paper, Vehicle dynamic controller is designed using tire force information that occurred between the tire and road surface. The proposed controller is verified using CarSim simulation.
황태훈(Taehun Hwang),이형명(Hyungmyung Lee),유은영(Eunyoung You),정태영(Taeyoung Chung),신광근(Kwangkeun Joseph Shin) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Various types of intelligent tire sensors, which measures tire forces directly, are developed by tire manufacturers and their consortiums for chassis control system application. If a tire sensor can offers forces between tire contact patch and road surface, chassis control systems can be improved with respect to vehicle dynamics aspects. In conventional chassis system, most of vehicle dynamics related variables and parameters are estimated by using chassis sensors, like wheel speed, yaw rate, lateral acceleration and etc. In this paper, we studied a feasibility of wheel force measurements based chassis control logic by using real-time tire force measurements.
실시간 시뮬레이션 환경 기반 AFS 제어기 설계 및 검증
황태훈(Taehun Hwang),윤경준(Kyoungjun Yoon),강민철(Minchul Kang),오나미(Nami Oh),전대석(Daeseok Jeon),박기홍(Kihong Park) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper presents construction of realtime simulation circumstances for designing chassis control system controller. One of various chassis control systems, The AFS(Active Front Steering) system is an active chassis control system that can improve driving stability by controlling yaw motion of vehicle with yaw rate sensor signal. The suggested controller was materialized by special ECU using RCP equipment. As realtime circumstances for controller design, CarSim-RT and RT-LAB were used to construct realtime simulation circumstances. CarSim vehicle model has 27 DOF, and it can reproduce relatively accurate vehicle driving. Besides, realtime-based controller verification ensured reliance. Experiments under the various driving environment were conducted to verify the suggested simulation circumstances and controller.
황태훈(Taehun Hwang),이시형(Sihyoung Lee),박기홍(Kihong Park) 한국자동차공학회 2006 한국자동차공학회 Symposium Vol.- No.-
본 논문에서는 각 바퀴의 독립구동이 가능한 4륜 독립구동 차량의 스키드조향 알고리즘과 슬립제어기에 대해 언급하고자 한다. 스키드조향이란 좌우 바퀴의 구동력 차이를 이용하여 전륜의 조향 없이도 차량의 선회가 가능하도록 하는 조향 방식을 말한다. 이를 위해 2자유도 기준차량모델로부터 목표 요레이트를 계산하고 실제 요레이트 값의 차이를 비교, 보정하여 차량 선회가 가능하도록 하는 새로운 스키드조향 알고리즘을 제안한다. 또한 직진 가속 및 제동시에 발생할 수 있는 과도한 슬립을 방지하여 주행안정성을 확보하고자 하는 슬립제어기를 제안하였다. 제안된 로직 검증을 위해 차량 동력학 해석프로그램(CarSim)과 MATLAB/Simulink 기반으로 구현된 제어로직을 연동하여 스키드조향 알고리즘과 슬립제어기의 타당성을 분석하였다.
CarSim과 퍼지제어기를 이용한 차량 동력학 제어기 설계
황태훈(Taehun Hwang),박기홍(Kihong Park) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The research of the vehicle stability is actively processing together car electronics in recent years. A commonly used active safety systems are ABS(Antilock Brake System) and TCS(Traction Control System). The VDC(Vehicle Dynamics Control, also known as ESP) system is safety system that can control effectively the lateral direction of vehicle unlike these. When the vehicle is unstable(oversteer or understeer status) during the cornering, it is safety system that can maintain the vehicle stability applying the braking or driving force. This research proposes a co-simulation method. In order to develop the co-simulation environment, the full vehicle model of CarSim and control logic consisting of MATLAB/Simulink are used. Proposed Fuzzy controller calculates an adequate brake torque and Vehicle dynamics controller determines one wheel depending on vehicle status for control. The verification of this VDC system is performed under various simulation conditions like J-turn, lane change, sinusoidal steering test.
Development of Integrated Chassis Control Algorithms to Improve Vehicle Dynamics
Taehun Hwang(황태훈),Kihong Park(박기홍),Seung-Jin Heo(허승진),Ji Yoel Joeng(정지열),Sangho Lee(이상호),Unkoo Lee(이언구),Kyu Hoon Lee(이규훈),Seung Guan Kee(기승관),Kangwon Lee(이강원) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Most electronic chassis control systems so far have been designed for optimization of its own performance. This, sometimes, has resulted in performance degradation when two or more control modules were operating together. Recently. great R&D effort is being given to judicious integration of individual chassis control systems in an effort to further enhance the overall vehicle performance. In this paper, two integrated control logics - one that integrates the brake and suspension control systems and the other that integrates the brake and steering control systems - have been developed. The main control target of both logics is vehicle dynamics control under critical situations. The two logics were tested under various driving conditions in a reliable simulation environment and their synergetic effects were investigated. The results indicate that the proposed logics can yield better vehicle performance than the cases when the individual chassis control modules work without any integration scheme.
Lumped Parameter 모델 기반 White box 전차량 모델 기반
이시형(Sihyoung Lee),황태훈(Taehun Hwang),노근제(Keunje Noh),이재훈(Jaehoon Lee),김회용(Hoiyoung Kim),박기홍(Kihong Park),허승진(Seung-Jin Heo) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, development system of RCP(Rapid-Control Prototyping) technology is actively adapted for the technology development of the electronic chassis control system. Therefore, a thesis of high fidelity realtime vehicle dynamics reference model is required. This paper studies technology for a thesis of vehicle dynamics model based on Lumped-Parameter model to simulate driving characteristic of electronic control vehicle accurately. Matlab/Simulink based 14 DOF full vehicle model consists of modular white box vehicle models (horizontal direction, vertical direction, road surface-tire, driver). Modular individual model can be used independently, and it should be possible to connect with other individual models hereafter. 14 DOF full vehicle model was compared with the interpreter for vehicle dynamics, CarSim, to verify compatibleness between modular individual vehicle models.
레이다 센서 에뮬레이터 개발을 위한 CAN 통신 환경 구축
유은영(Eunyoung You),황태훈(Taehun Hwang),이한성(Hansung Lee),정민규(Minkyu Jung),박기홍(Kihong Park),허승진(Seung-Jin Heo) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Pre-crash safety system is a close connection of the human life, so value of the authenticity is very important part. Thus HIL Simulation for value of the authenticity make a study on automobiles. The paper introduces the CAN (Controller area network) communication for the radar sensor emulator under development. The sensor measures distance and relative velocity of the near objects and the information used the accident prevention. The radar sensor emulator is applicable for the HILS system for measured ability of the Pre-crash safety system.