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전륜구동 고성능차 핸들링 성능향상 위한 “N 코너 카빙 디퍼런셜” 독자로직 개발
장성윤(Jang, Seong Yun),김봉주(Kim, Bong Joo),우승훈(Woo, Seung Hoon),송종훈(Song, Jong hun),양상석(Yang, Sang Suk),손현승(Son, Hyeon Seung) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
Electric Limit Slip differential is adopted for Reducing Under Steer when corner exit with acceleration which is important to Front driven high performance vehicle. First, Vehicle Modeling of inner wheel traction changing according to weight transfer at cornering is applied. And control logic by monitoring inner wheel slip amount is added for preparing out of case of the inner wheel traction modelling logic prediction. Second, OS control logic is applied by monitoring yaw rate deviation between vehicle yaw rate and target yaw rate for stabilizing vehicle when OS condition detected. Third, cooperative control strategy with ESC system is applied for decoupling of eLSD/ESC system overlapped control timing. Therefore, Weak point of Under steer when corner exit with acceleration of front driven high performance vehicle is overcome by eLSD system applied