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전자제어식 주차브레이크(EPB) 개발 및 성능평가에 관한 연구
양이진(Ijin Yang),손영섭(Youngsup Son),박인욱(Inuk Park),노강성(Kangsung Noh),윤팔주(Paljoo Yoon) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In the last five years, Electronic Parking Brake(EPB) system, which supports driver-parking operation as well as secures vehicle safety has been adopted on many vehicles. MANDO have developed the EPB system with basic, supporting and comfortable functions and put to practical use. This paper describes the design approaches during the developing phase to meet system requirements, numerical analysis for optimal performance and finally functional abilities and test results of newly developed EPB on the vehicle level.
이동휘(Donghwi Lee),김양수(Yangsoo Kim),허건수(Kunsoo Huh),손영섭(Youngsup Son) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
A design algorithm for the adaptive cruise control system is proposed using the flexible relative distance. The current ACC systems use only the preceding car as the target vehicle. In this case, an accident can be occurred by a sudden cutin vehicle or sudden switching of the primary target gives a driver and passengers an unpleasant feeling. In this study, the ACC system is proposed by considering the flexible relative distance between ego vehicle and target vehicle. The relative distance between ego vehicle, surround vehicles and preceding vehicle is generated by relative speed and ego vehicle’s speed. This system can overcome the limitations of the current ACC, such as side collision and unpleasant feeling of a driver and passengers. The performance of the proposed system is verified with the commercial software.
張珉碩(Minseok Jang),李英玉(Young Ok Lee),李元九(Wongoo Lee),李忠禹(Choong Woo Lee),孫榮涉(Youngsup Son),鄭正周(Chung Choo Chung) 대한전기학회 2008 전기학회논문지 Vol.57 No.12
Hall effect force sensors have been used to measure clamping force in conventional Electric Parking Brake (EPB) systems. Estimation of clamping force without the sensors has drawn attentions due to mounting space limitations and cost issues. Removing the sensor requires the estimation of the initial contact point where the clamping force is effectively applied to the brake pads. In this paper, we propose how to estimate the initial contact point finding the relation between the angular velocity of an actuator and the initial contact point. For force estimation a look-up table is used as a function of the displacement of parking cable from the initial contact point. The proposed method is validated by experiments. From the experimental results we observe that the proposed method satisfies the specifications. The designed method is also able to estimate clamping force although parking cables are loosened and brake pads are worn out. Applying the proposed method enables manufacturing of low cost EPB systems.