비 구형 기어를 이용한 자기강화 브레이크 시스템의 강인제어 로직 개발

박희람(Heeram Park),최세범(Seibum Choi),김주곤(Joogon Kim),김명준(Myoungjune Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11

Simens VDO, German electronic and mechatronic developer announced an innovative braking device called Electronic Wedge Brake (EWB). It uses self-energizing effect, so it is the most energy-effective braking device among Brakeby-Wire systems which is compatible with existing 12 Volts system. A new type of EWB which is called Electronic Noncircular Gear Brake was developed by S. Kim and S. Choi. This brake system has the possibility applying variable wedge angle to system by using noncircular gears. But, as the brake also uses self energizing effect, it is very sensitive to parametric variance. For this reason adaptive controller was developed by Y. Hwang and S. Kim. In this research, the performance of previous adaptive controller is discussed. Based on the previous work, a modified adaption algorithm is proposed and verified by numerical simulation.

하이브리드 제동 시스템의 ABS/ESC/EPB 제어

김주곤(JooGon Kim),김명준(MyoungJune Kim),전재형(JaeHyung Chun),김광일(KwangIl Kim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4

Recently, active brake systems such as ABS/ESC become generalized in medium and luxury passenger car. While most active brake systems are based on hydraulic system, Newly proposed ABS/ESC controls based on electronic brake system are applied in the rear wheel control of hybrid brake system. The proposed method is a new electronic braking control method for the sake of vehicle stability using BLAC motor. Important information of hybrid brake control system is transferred through CAN network. Sensor information of ABS/ESC is processed in front wheel hydraulic ECU and motor control is processed in rear wheel EMB ECU. ABS/ESC control in HBS is composed of two parts. In front part, sensing of yaw, steering angle, wheel speed and brake pedal travel, decision making of ABS/ESC and hydraulic operations are performed. And sensing of motor position and current and motor control of two rear wheels are performed in rear part. To show the results of CBS, ABS, ESC, EPB braking feasibility, various kinds of vehicle tests were accomplished. Those results show good performance in vehicle braking stability and convenience.

지능형 차량 안전 시스템의 개발

김주곤(JooGon Kim),이혜림(Hyerim Lee),정대종(DaeJong Jeong),우덕현(DurkHyeun Wuh) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

A new Intelligent Vehicle Safety System(IVSS) which can be used for total safety in the future are proposed in this paper. The proposed IVSS can be applied in the sideslip control of the vehicle safety system with the value of Beta (Beta is a sideslip in the COG of a vehicle) which is obtained from a vehicle observer. The ECU of IVSS is a new electronic integrated chassis controller with 6-axis sensor. It is used for a sensor controller for the sake of vehicle stability. We obtained both a vehicle observer using 6- axis Gyro sensor and Beta through the vehicle observer. To show the feasible performance of the proposed ECU, vehicle observer and Beta, the vehicle tests of the developed value of Beta and the developing value of Beta were accomplished. And results have the better performance comparing to the previous one. From this research, we have obtained core technologies to develop both the ECU of IVSS and the algorithm of vehicle observer including Beta which can be applied to the advanced vehicles such as hybrid vehicles, fuel cell vehicles, and electrical vehicles.

하이브리드 제동 장치의 캐스케이드 제어

김주곤(Joogon Kim),김종기(Jongki Kim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Developing active brake systems such as ABS. TCS and ESC decrease a death rate in vehicle accident. In this paper a new HBS(Hybrid Brake System) which is composed of the hydraulic brake system for front wheel and the EMB(Electro-Mechanical Brake) for rear wheel was introduced. The HBS is an environment-friendly system because it doesn't need any brake oil for rear wheel. In respect of failsafe the HBS has the hydraulic brake system in front wheel as a backup brake. So even in case of failure of rear electro-mechanical brake the HBS can guarantee the basic braking performance. A newly designed electro-mechanical brake installed in rear wheel reduces the required motor power dramatically by transferring the kinetic energy of a vehicle into the braking force. A cascade control that is composed of position control and current control is used in EMB system. In addition this paper also provides a vehicle test result with HBS to show the feasibility of CBS braking performance.

Brake By Wire HILS 시스템 개발

김주곤(Joogon Kim),김명준(MyoungJune Kim),김광일(Kwangil Kim),이한주(HanJu Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

X-by-Wire 시스템 표준화

김주곤(JooGon Kim),노승현(SeungHyeon Noh),연구봉(GyuBong Yeon),노기한(KiHan Noh) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

Standard methods of vehicle test and integrated ECU in the new X-by-Wire System which can be used for total safety in the future are proposed in this paper. The proposed system is composed of sensor, a new developing ECU and chassis actuators. To make a standard of the proposed system, the procedure of both vehicle test and integrated test will be performed. From this research, we will obtained core technologies to develop the standard process of both the vehicle test and the integrated ECU test. This study will be reflected for the establishment on the Korean Vehicle Safety Standard for X-by-Wire or Total Safety System.

그린카용 Brake-by-Wire 시스템의 EMB 엑추에이터 개발

김주곤(JooGon Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11

From now on, most active brake systems are based on hydraulic system. A new electromechanical brake system which can be used of ABS/ESC control actuator is proposed in this paper. The proposed system can be applied in the rear wheel control actuator of both HBS(hybrid brake system) and 4W EMB System. The proposed system is a new electronic braking control system for the sake of vehicle stability using BLAC motor. Rig tests are performed for the feasibility of the proposed EMB actuator. To show the results of ABS, ESC braking feasibility, various kinds of vehicle tests were accomplished. ABS test results of straight braking and ESC test results of circle cornering in ice and snow road are obtained in vehicle tests. Those results show good performance in vehicle braking stability comparing to the ABS/ESC results of the hydraulic system. From this research, we have obtained core technologies to develop the ABS/ESC logic of rear EMB system which can be applied to BBW system in advanced vehicles such as hybrid vehicles, fuel cell vehicles, and electrical vehicles.

그린카용 Brake-by-Wire 시스템의 ECU 개발

김주곤(JooGon Kim),김명준(MyoungJune Kim),전재형(JaeHyung Chun),구본경(BonGyeong Koo),허재호(Jaeho Hur),손영창(YC Son) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5

New ECU’s of EMB/EWB system which can be used for ABS/ESC/EPB controller are proposed in this paper. The proposed ECU’s can be applied in the rear wheel control actuator of both HBS System and BbW System. The proposed drive ECU is a new electronic braking controller for the sake of vehicle stability using BLAC motor and the developed central ECU is a new electronic central braking controller of HBS System or BbW System. To show the results of the proposed ECU’s, various kinds of vehicle tests were accomplished. From this research, we have obtained core technologies to develop both the drive ECU of front/rear EMB system and the central ECU which can be applied to BBW system in advanced vehicles such as hybrid vehicles, fuel cell vehicles, and electrical vehicles.

Fault Tree Analysis를 통한 EMB 고장의 분류 및 EMB의 고장 검출 알고리즘 개발

김인근(Inkeun Kim),한광진(Kwangjin Han),허건수(Kunsoo Huh),김명준(Myoungjune Kim),김주곤(Joogon Kim),구본경(Bongyeong Koo) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11

Barke-by-Wire systems are lighter in weight, faster in response, easier to implement than the conventional brake systems. Because brake systems are directly related to passengers’ life, guarantee of system’s robustness are essential for implementation. In order to ensure the reliability of the Electro-Mechanical Brake(EMB), a robust dry-type BBW controller should be designed. In this study, a fault detection algorithm is designed based on classified faults. Fault Tree Analysis is used to show how the faults are occurred and how their causes are related to the basic events. In order to detect the rotor faults, magnetic flux leakage are estimated using the estimation algorithm. By choosing a proper threshold, it is shown that rotor fault can be detected.

윤활상태에 따른 Electro-Mechanical Brake의 Clamping Force 추정

최정호(Jeongho Choi),김인근(Inkeun Kim),허건수(Kunsoo Huh),김명준(Myoungjune Kim),김주곤(Joogon Kim),김광일(Kwangil Kim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4

Brake-by-wire systems have several advantages compared to conventional hydraulic brake systems. They are environmentally-friendly because they do not need brake fluid. EMB (Electro-Mechanical Brake) is a type of Brake-by-wire system and it generates clamping force utilizing the electric motor. Since EMB has fast response, it is suitable for modern electronic brake control systems such as ABS (Anti-lock Brake System), TCS (Traction Control System), ESC(Electronic Stability Control) etc. Brake-by-wire systems need accurate information of the clamping force for controlling the brake force. However, it is difficult to install the sensor for measuring the clamping force due to cost and maintenance problems. In this study, an algorithm to estimate the clamping force is developed based on electrical and mechanical models of EMB. Nonlinearities of the EMB such as friction are considered to accommodate various lubrication conditions. The proposed algorithm is verified experimentally with the test bench.