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선진 자동차 재제조 산업 분석을 통한 국내 산업에의 시사점 : 교류발전기와 시동전동기를 중심으로
김형주(H. J. Kim),Guenther Seliger,정남훈(N. H. Chung),이한홍(H.H. Lee) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
Post industrial technologies have improved human standard of living, however, a host of negative environmental consequences from the unlimited industrial appetite have posed serious global challenges. Remanufacturing is an industrial manufacturing process that is to restore old products to perform like a new and to save energy, natural resources, landfill space and to reduce air pollution by less re-smelting. By extending product life cycle, remanufacturing gives us enormous opportunities for sustainable development of our society. This paper introduces current state of the art and future perspective in the field of automotive remanufacturing focusing on alternator and start motor. The results could be used as a basic information for further remanufacturing applications in Korea.
차량 능동 현가시스템의 제어 알고리즘 구현 및 실차 성능시험
장효환(H.W.Chang),김주용(J.Y.Kim),정남훈(N.W.Chung),유병철(B.C.Yoo),송동우(D.W.Song) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.6_2
In this study, PC Base electronic control unit was constructed for full car test of active suspension system. And sky-hook damping theory, roll and pitch control theory, and PID control theory were applied to a vehicle equipped with active suspension system in order to perform ride quality control, attitude control, and height control.<br/> The performance of ride quality was evaluated through high way ride quality test. The performance of attitude control was evaluated through steady state cornering, step steering, anti-dive, and anti- squat test. Finally height control test which is composed of constant height, height selection, and speed sensing height control was performed.<br/> As a result, through various test, active suspension system showed more excellent ride quality performance in frequency range adjacent to lHz, and more excellent attitude control effect than passive suspension system. Also excellent height control was performed through PCD control.<br/>
송동우(D.W.Song),심정수(J.S.Shim),정남훈(N.H.Chung) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
In this study, the attitue control logic for a Low-band width Active Suspension System is developed to improve the roll, pitch, and yaw stability of a passenger car under various driving conditions. In order to reduce roll and pitch angle of a car under cornering or braking/acceleration, Anti-roll & Anti-pitch control algorithms is used. And, to acquire Yaw stability in fast cornering, a special algorithm which is designed to change steering characteristics through front/rear roll moment distribution is added. In addition to these logics, Jack-up compensation algorithm is used to improve cornering stability. For performance verification of control logics, full vehicle model, active suspension hydraulic model, and digital control model is constructed using ADAMS package and Fortran language. With this model, we fulfilled the simulation of various driving states, and confirrn the performance of logics.