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실험계획법과 성능지표 분석을 통한 차량 액추에이터의 최적 제어인자 탐색 방법
변세희(Se-Hee Byun),김대우(Dae-Woo Kim),강수혁(Soo-Hyeok Kang),김성재(Sung-Jae Kim),민경국(Kyoung-Kook Min) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6
PID controller is commonly employed to control actuators in engine management system. It is very important to search for the optimal control parameters in PID controller. This paper introduces a search method of optimal PID control parameters by Design of Experiments(DoE) and proposed performance criterion.
변세희(Byun Se Hee) 영미어문학회 2014 영미어문학연구 Vol.30 No.1
Langston Hughes remained pretty private about his personal life, but it has been agreed by many academics and biographers that Hughes was homosexual and included gay codes into many of his poems. As a gay man, Hughes lived that secret life silently in the confines of a very narrow, but well-constructed closet--one that still shelters him today. However, focusing on such poems as "Tell me", "Star Seeker", "Dream Keeper", we can easily identify homoeroticism and other gay markings. Eve Kosofsky Sedgwick was an American academic scholar in the fields of queer theory. In her book Epistemology of the Closet, she sees the closet for homosexuals as "defining structure for gay oppression in [the 20th] century". Also she argues that the "closet" and "coming out" as tools to investigate these basic binaries. The "closet" is an epistemological space where knowledge is either forcibly suppressed from outside or willfully withheld from within. This paper aims to analyze queer speakers in Langston Hughes's poetry based on the definition and function of closet which Sedgwick suggested in her book.
경사도 기반의 ECU 캘리브레이션 매개변수 최적화 방법
도형수(Hyung-soo, Do),변세희(Se-hee Byun) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
Nowadays, vehicle control system is going to be complicated and control parameters of Electronic Control Unit(ECU) is gradually increased due to dealing with world wide intensifying of emmision regulation. Deriving amount of control parameters from engineers experience and searching by trial and error is not only inefficient but also time consumming. Thus, the necessity of speedy and exact evaluation tool for deriving control parameters is to the fore. The proper optimization algorithm should be included into the tool. There are many kind of optimization algorithms like gradient based method, genetic algorithm, etc. In this paper, the optimization of calibration parameters of in-cylinder air-fuel ratio is performed.
XCP 다중 접속을 통한 자동화 캘리브레이션 툴의 시간지연 문제 해결 방법
강수혁(Soo-Hyeok Kang),김대우(Dae-Woo Kim),변세희(Se-Hee Byun),김성재(Sung-Jae Kim),소창영(Chang-Young So) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6
Vehicle ECU Calibration Tool directly accesses to ECU internal variables, changes its value, and measures the operation results. However, it occurs a time delay problem when executed on Windows OS. This paper introduces a method of resolving time delay problem by XCP multiple access and suggests the system using Arduino board.