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브러시리스 직류 전동기의 토크 맥동 저감을 위한 전류 제어 방식에 관한 연구
이광운(Kwang-Woon Lee),홍희정(Hee-Jung Hong),박정배(Jung-Bae Park),여형기(Hyeong-Gee Yeo),유지윤(Ji-Yoon Yoo) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
The brushless DC motor with trapezoidal back emfs has torque ripple due to phase commutation. The torque ripple generates noise and vibration and cause errors in position control so this makes the brushless DC motor less suitable for high performance servo applications. In this paper, we propose a new current control method to reduce the torque ripple due to commutation, when the unipolar PWM method is applied for the phase current control of brushless DC motor.<br/>
이광운 ( Kwang Woon Lee ) 한국로렌스학회 2009 D.H. 로렌스 연구 Vol.17 No.1
This paper aims to point out some pictorial elements in D. H. Lawrence`s poetry while focussing on his use of color imagery. It may be natural that Lawrence, who had a great interest in painting picture and visual arts, attempted to embody these artistic effects in his poetry. Lawrence revealed his idea of pictures while discussing his view of Cezanne in his long essay entitled, "Introduction to These Paintings." In this essay, Lawrence insists that Cezanne`s still lifes embody his so called `appleyness.` `Appleyness,` which is more like the thing itself, avoids "so called humanness, the personality, the `likeness,` the physical cliche." `Appleyness` perceives the unmoving material in terms of mobile and senses `all-aroundness` and `insideness` of things by instinct and intuition. This paper argues that the pictorial elements along with the color imagery used in some of Lawrence`s poetry strengthen the poet`s view of `appleyness.` Red color is related with `insideness` and `all-aroundness` and blue and green are used as background colors to signify the flux of the universe and to suggest harmony and life. And yellow and gold are used to reveal the sense of kinetic and sensual movement. To sum up, Lawrence tries to adapt his theory of art into his poetry.
스텝 모터의 미세각 제어 구동 회로 및 병렬 운전 제어기 개발
이광운(Kwang-Woon Lee),장원식(Won-Sik Chang),유지윤(Ji-Yoon Yoo) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
In this paper, we developed a micro-stepping drive circuit of step motor and proposed software algorithm for parallel operation of step motors drived by micro-stepping circuit Also, we implemented a parallel operation controller with a 16-bit micro-controller.
이광운 ( Lee Kwang-woon ) 대한영어영문학회 2002 영어영문학연구 Vol.28 No.3
This paper attempts to analyze James Dickey's early poems in terms of his vision of unity. Dickey depicts his inner vision of unity through ordinary and common scenes. He deals with things from a truly animistic point of view and tries to recover the original wholeness that was lost by modern man. Dickey's unified vision is sexual, surrealistic, transcendental as well as shamanistic. This leads to the recovery of wholeness. Thus, Dickey's poetry possesses healing power. Dickey shows his monistic vision in such poems as “Inside the River”, “Tree and Cattle”, and “Common Grave” etc. in which nature and man, earth and heaven, time and eternity, and life and death are merged. He also reveals his sense of unity in “Heaven of Animals”, “Springer Mountain”, “Listening to Foxhounds”, “A Dog Sleeping on My Feet” and “Approaching Prayer” in which predators and prey are unified in a love relationship in the cycle of life and death. Dickey also suggests a continuity of life after death. He depicts shamanistic phenomena in some of his poems that show the poetic speakers possessed with the spirits of the dead. < Catholic U of Daegu >
이광운 ( Lee Kwang-woon ) 대한영어영문학회 2005 영어영문학연구 Vol.31 No.3
The history of the prose poem in America is comparatively short. Thus, as yet prose poem does not have any specific rules to keep and “no aesthetic or compositional tradition has formed around the prose poem.” Robert Bly, who is one of the leading writers of prose poetry, however, succinctly expresses his view on the prose poem. The purpose of this paper is to reveal some characteristics of the prose poems of Robert Bly. The paper suggests that Bly's prose poems are mostly thing poems dealing with the essences of the thing itself through direct, natural, and simple dialogical language. This paper also argues that Bly's prose poems are haiku-like dealing with the problem of spiritual awakening. It is also suggested that the deep image and the leaping image are used to express “the lyrical impulses of the soul, the ebbs and flows of reverie, the pangs of conscience” throughout his poetry.
영구자석 동기전동기의 역기전력 기반 센서리스 알고리즘 분석
이광운(Kwang-Woon Lee),이용재(Yongjae Lee),하정익(Jung-Ik Ha) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
본 논문에서는 영구자석 동기전동기의 역기전력 기반 센서리스 알고리즘들에 대해 세부적인 구성을 살펴보고, 각각에 대해 전달함수를 구하여 주파수 응답을 분석함으로써 각 알고리즘들의 특성을 비교하고자 한다.