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오광교 제어로봇시스템학회 2021 제어로봇시스템학회 국내학술대회 논문집 Vol.2021 No.6
Parallel operation of multiple motor drives are required when individual drive does not satisfy the system requirement or the overall system requires redundancy for failure safety. Speed droop control, which is one of typical parallel operation schemes, has been studied for a long while. It is known that steady-state speed regulation error is inevitable though torque sharing property is satisfied by the speed droop control. In this report, we analyze the parallel operation characteristics of the speed droop control depending on its applications. Accordingly, we show that the speed droop control can be effectively used for some applications.
Distributed Formation Control based on Orientation Alignment and Position Estimation
오광교,안효성 제어·로봇·시스템학회 2018 International Journal of Control, Automation, and Vol.16 No.3
Formation control is studied for single- and double-integrators on the plane based on orientation alignment and position estimation. It is assumed that agents measure the relative positions of their neighbors with respect to their own local body-fixed reference frames without any common sense of orientation. The proposed control strategy consists of an orientation alignment, a position estimation, and a position control law. It is shown that the proposed control strategy allows the agents to achieve the desired formation if the interaction graph is uniformly connected and the orientation angles belong to an interval with arc length less than π.
Cyanine 및 Merocyanine 색소의 분광특성 및 광전특성 (1)
손세모(Se Mo Son),권태선(Gwon Tae Sun),김성훈(Kim Sung Hoon),고교영웅(E . Takahashi),광교량(R . Hirohashi) 한국화상학회 1995 한국화상학회지 Vol.1 No.1
Spectroscopic and Photoelectric Characteristics in the Cyanine · Merocyanine Dye were investigated according to systematically change of their structures. In solution,Hetero atoms(X) of Cyanine and Merocyanine dye were participated in resonance X of d obital rather than X of p obital, effected in resonance and contributed in extension of conjugated system , In solid film, new spectrum, called eximer-fluorenscence, appeared in 3-dimensional fluorenscence of high density of cyanine dye but not of merocyanine. As activational energy of conductivity in merocyanine dye was lower than in cyanine dye on the contrary drift mobility was higher, the former in photoelectric characteristics was more effective than the latter.
신광교 전남대학교기업경영연구소 1995 經營情報 Vol.6 No.2
근로자의 안전은 근로자 스스로 터득해야할 경륜상의 노하우에 다름 아닌 것이 되어버렸다. 따라서, 금속 기간이 짧고 경험이 낮은 근로자일수록 재해에 적나라하게 노출될 수 밖에 없다. 이는 수치상으로도 명백하게 나타나고 있으니, 94년도 재해자 85,948명 중에서 6개월 미만 근속자가 무려 51.74%로서 과반수가 넘고 있다. 물론, 산업안전보건법에는 근로자의 안전을 위해 산업안전기사를 채용하거나 안전담당자를 선임하게 되어 있고 월 2시간 이상씩의 교육을 시키게 되었으며, 신규채용 근로자에게는 특별히 채용에 따른 안전교육을 사전에 행하게 되어있다.