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전륜 EWB 장착 연료전지 자동차의 회생제동 특성 해석
고지원(Jiweon Ko),김정욱(Jungwook Kim),현동윤(Dongyoon Hyun),김현수(Hyunsoo Kim) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
In this study, we analyzed the regenerative braking characteristics of a fuel cell electric vehicle (FCEV) equipped with electronic wedge brakes (EWB) on the front wheels. To analyze the regenerative braking characteristics of the FCEV with EWB, a regenerative braking control algorithm was proposed for the regenerative braking and friction braking for front wheels and friction braking for rear wheels, and a powertrain model of an FCEV composed of a motor, fuel cells, and batteries and a MATLAB model of the control algorithm were developed. They were linked to the CarSim-RT (real time) model of the vehicle under study, whereas the braking hardware in the loop simulator (HILS) of the FCEV was built using the EWB hardware. This HILS was used to examine dynamic response of the regenerative motor torque and the EWB clamping force corresponding to the driver’s braking demand.
전륜 EWB 장착 연료전지 자동차의 제동감 유지를 위한 회생제동 제어 알고리즘 개발
고지원(Jiweon Ko),김정욱(Jungwook Kim),이가은(Gaeun Lee),현동윤(Dongyoon Hyun),김현수(Hyunsoo Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
In this study, we proposed regenerative braking control algorithm of a fuel cell electric vehicle (FCEV) equipped with electronic wedge brakes (EWB) on the front wheels, for maintaining braking force and braking feeling when regenerative braking of a vehicle and friction braking crossed each other. The regenerative braking algorithm was developed with weight factor considering gap control of EWB, vehicle speed, and response speed of EWB. We constructed hardware in the loop simulator (HILS) system comprised of EWB hardware and FCEV simulator. Using the HILS, performance of the regenerative braking control algorithm was investigated when the regenerative braking and friction braking intersected each other. As a result of HILS, a sharp change of deceleration decreased in braking intersection part by the proposed regenerative control algorithm, therefore braking feeling and braking force were maintained.
2 stage CVT 하이브리드 자동차의 회생제동 알고리즘 개발
채민재(Minjae Chai),고지원(Jiweon Ko),권오은(Oheun Kwon),김현수(Hyunsoo Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
In this study, a regenerative braking control algorithm for 2 stage CVT hybrid electric vehicle is proposed to increase the recuperation energy during braking. The regenerative braking control algorithm selects the proper gear ratio of the planetary gear while the CVT variator ratio is controlled to maintain the motor operation on the optimal operating line. In order to evaluate the performance of the regenerative braking control algorithm, a 2 stage CVT hybrid electric vehicle simulator is developed. It is found from the simulation results that the amount of the regenerative braking energy is increasedly the proposed control algorithm.
전동식 부스터 브레이크 장착 전기자동차의 회생제동 협조제어 알고리즘
박용선(Yongsun Bak),송철호(Chulho Song),고지원(Jiweon Ko),김현수(Hyunsoo Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
In this study, a regenerative braking co-operative control algorithm was proposed for electric vehicle equipped with electric booster brake. Regenerative control algorithms for (1) front control and (2) front-rear control type electric booster system were suggested. To evaluate the performance of the control algorithm, electric vehicle performance simulator and a HILS were developed. It was found from the HILS results that the co-operative control algorithm of the front-rear control type is able to recuperate more braking energy than that of front control type.