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ACC 시스템 ECU 검증을 위한 Brake Hardware-in-the-Loop Simulation System 개발
문일기(Ilki Moon),이경준(Kyoungjun Lee),이경수(Kyongsu yi),이인식(Insik Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper describes an investigation of the Brake HiLS(Hardware-in-the-loop Simulation) System for verification of ACC System ECU. Since vehicle tests are costly and time consuming, how to establish an efficient and low cost development system is an important issue. Brake HILS system prevents the error that occurs in case of modeling the hydraulic system of ESP module, and has an advantage of developing ECU for ACC System by using interface which is same as real vehicle environment. Brake HiLS system consists of a brake pressure control unit, ACC System ECU, target computer for realtime simulation and host computer which is used to control the target computer and to save simulation data. This paper also includes the test result of Brake HiLS system in low speed driving scenario with stop situation.
문일기(Ilki Moon),이경수(Kyongsu Yi),이재관(Jaekwan Lee),김병수(Byoungsoo Kim) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In practical driving situation, Adaptive Cruise Control (ACC) system has to need a function that is determination of primary target among several forward vehicles. We present a multi-target tracking (MTT) ACC system which consists of three Part; track estimator using IMM-PDAF, a Primary target vehicle determination algorithm and a single-target adaptive cruise control algorithm. Three motion models: uniform motion, lane-change motion and deceleration motion, which are validated using simulated and experimental data, are adopted to distinguished large lateral motions from longitudinally· excited motions. The improvement in the state estimation performance when using three models is verified in target tracking simulations. The performance and safety benefits of a multi-model-based MTT-ACC system is investigated via simulations using real driving radar sensor data.
민석기(SukkiMin),문일기(Ilki Moon),하정수(Jungsoo Ha),이경수(Kyongsu Yi) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_3
The points that have been discussed in this paper are related to the tendency of driving behavior and parameters of<br/> a human driver model. In order to determine the driving scheme, the driver has to obtain a lot of information that are range, range-rate, velocity, surrounding vehicles, road condition and so on. Two parameters are considered in this study to represent driving pattern of various drivers and to classify hwnan driver model are time-gap and time-tocollision. We used a specially equipped vehicle that has a radar sensor, accelerometers, a brake pedal force transducer and a CAN unit. The hwnan driver model parameters have obtained using vehicle driving test data. Speeds and clearances of a vehicle driven by a human driver have been compared to those of a cruise controlled vehicle in a case of vehicle following.
최동원(Dongwon Choi),문일기(Ilki Moon),이경수(Kyoungsoo Yi) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper presents lane tracking control of a electric vehicle with autopliot. A two dimensional vehicle model for simulation and a lane tracking algorithm have been developed. The vehicle steering control algorithms have been desigened by PID control and sliding mode control. Simulations for straight and curved path tracking are conducted to investigate the validity of the proposed control system.
함준호(JunHo Ham),문일기(IlKi Moon),서경일(KyungIl Seo),차종조(ChongJo Cha) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The fusion sensing methodology of longitudinal velocity and acceleration sensors is proposed in this work. Additionally an accelerometer has gravity and initial bias, which is detrimental to control performance. The proposed estimator also can reduce effects of these biases. Many estimators, which use longitudinal velocity and acceleration sensors, was developed and used. The proposed estimator shows better performance than others. Because of more tight fusion method is applied. This paper will be shown that the proposed fusion filtering has better performance than others with simulation and vehicle test.
박진영(Jinyoung Park),문일기(Ilki Moon) 한국자동차공학회 2020 한국자동차공학회 부문종합 학술대회 Vol.2020 No.7
This study suggests safety-time boundary for lane change of autonomous vehicles. The time boundary is computed using other vehicles’ data in the target lane, and path can be generated based on the time. Using driving data of the host and other vehicles such as distance and speed, compute time-to-collision and inter-vehicular-time and derive the minimum and maximum time within a pre-defined safety time boundary for lane changes. This minimum and maximum time indicate a range of collision-free to other vehicles in the target lane. Finally, path generation using Minimum Jerk Trajectory and it leads to safe lane change.
이경수(Kyongsu Yi),문일기(Ilki Moon) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.2
This paper presents a vehicle control algorithm for stop and go cruise control systems which makes the vehicle remain at a safe distance from a preceding vehicle according to the driver's preference, automatically slow down and come to a full stop behind a preceding vehicle. The control algorithm consists of speed and distance control algorithm and a combined throttle/brake control law. Throttle and brake actuators are controlled by the throttle/brake control law so that the vehicle acceleration tracks the desired acceleration designed based on the vehicle speed and distance control algorithm. A stepper motor and an electronic vacuum booster have been used for the throttle and brake actuators. The throttle and brake actuators have been tested and the actuator dynamics has been incorporated in simulation study. The uncertainties of vehicle model have been considered in the design of the control law. The effect of throttle/brake control has been investigated via simulations. The simulations were performed using a complete nonlinear vehicle model. The results indicate that the proposed control law can provide the stop and go cruise control system with a good distance and velocity tracking performance.
김종철(Jongchul Kim),임형준(Hyungjun Lim),문일기(Ilki Moon),이재관(Jaekwan Lee),김병수(Byoungsoo Kim) 한국자동차공학회 2005 한국자동차공학회 Symposium Vol.- No.-
This paper introduces a description of a system, which detects approaching obstacle vehicles and prevents collision accident through the RADAR established in the side back or side rear of test vehicle. In the action of predicting collision, it generates a warning to driver with reaction torque in active steering actuator. According to the experimental result, the proposed system is possible to backup driver's carelessness at lane change.