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최병도(Byungdo Choe),황우현(Woohyun Hwang),허건수(Kunsoo Huh),김명준(Myoungjune Kim),김주곤(Joogon Kim),정대종(Daejong Jung) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
EMB is considered as the next generation braking mechanism because it has simple structure and is environment friendly. However, as other brake mechanisms, EMB should be operated reliably for any operating conditions. EMB should be designed with fail-safe and fault-tolerant control concepts, which requires robust fault detection algorithms for various possible faults. But, in the design of fault detection algorithms, it is very difficult to construct faulty conditions in real EMB and thus, simulations are often used to emulate the faulty conditions. In this paper, a simulation tool is developed using the commercial software to emulate gear faults in the EMB mechanism.
기어의 고장을 구현하기 위한 EMB(Electro Mechanical Brake) 모델링 및 제어
최병도(Byungdo Choe),황우현(Woohyun Hwang),허건수(Kunsoo Huh) 한국자동차공학회 2012 한국 자동차공학회논문집 Vol.20 No.6
EMB is considered as the next generation braking mechanism because it has simple structure and is environment friendly. However, as other brake mechanisms, EMB should be operated reliably for any operating conditions. EMB should be designed with fail-safe and fault-tolerant control concepts which require robust fault detection algorithms for various possible faults. In the design of fault detection algorithms, it is very difficult to construct faulty conditions in real EMB and thus, simulations are often used to emulate the faulty conditions. In this paper, a simulation tool is developed using the commercial software to emulate gear faults in the EMB mechanism. A backlash compensation algorithm is introduced based on contact point detection because screw backlash causes a delay in clamping force response time.
이상엽(Sangyeob Lee),한상오(Sangoh Han),최병도(Byungdo Choe),허건수(Kunsoo Huh) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
On-line and real-time information of the longitudinal velocity is the essential factor for the Advanced Vehicle Control Systems such as ABS (Anti-lock Brake System), TCS (Traction Control System), ESC(Electronic Stability Control) etc. In these systems, the information of the longitudinal velocity is the key factor. A estimation method of the longitudinal velocity is developed based on the measurements of the vehicle longitudinal/lateral accelerations, steering angle and yaw rate. The Kalman filter is designed based on the 3 degree of freedom vehicle model. In order to calibrate the acceleration sensor, the inclined angle of the sensor is estimated. The performance of the proposed estimation method is evaluated in simulations using CarSim and Matlab/simulink. Also, its performance is tested on an instrumented test car in various driving conditions.
주건엽(Keonyup Chu),한재현(Jaehyun Han),이민채(Minchae Lee),김동철(Dongchul Kim),조기춘(Kichun Jo),오동언(Dong-eon Oh),윤이내(Enae Yoon),곽명기(Myeong-gi Gwak),한광진(Kwangjin Han),이동휘(Donghwi Lee),최병도(Byungdo Choe),김양수(Yangsoo 한국자동차공학회 2011 한국 자동차공학회논문집 Vol.19 No.4
This article describes the Autonomous Vehicle #1 (A1), which won the 2010 Autonomous Vehicle Competition (AVC) organized by Hyundai?Kia automotive group. The A1 was developed for high speed and stable driving without human intervention. The autonomous system of A1 was developed based on in-vehicle networks, electronic control units, and embedded software. Novel environment perception and navigation algorithm were evaluated and validated through the AVC. In this paper, we presented the system and software architecture of A1.