축구경기장 조명의 이해 -서귀포 월드컵 경기장 중심으로-

오성보 한국조명전기설비학회 2002 조명.전기설비 Vol.16 No.2

브러쉬리스 직류전동기의 코깅 토오크 비교해석

오성보 濟州大學校 工科大學 産業技術硏究所 1990 産業技術硏究報告 Vol.1 No.-

This thesis describes a study on cogging torque comparative analysis of brushless DC motor, which is one of torque ripple. These features have made brushless DC motors as one of the best choices which replace conventional brush-type DC motors in servo and robotics application. A cogging torque among the torque ripple in brushless DC motors is mainly due to the fluctuations of the field distribution which depends on the motor structure. The purpose of this thesis is to develop mathematical analysis and the experimental method of torque capable of accurately predicting the cogging torque. In this thesis. two methods which enable us to predict the amount of cogging torque are presented. One is the mathematical analysis using the analytic solution of flux density. The second is the experimental method which measures cogging torque in order to compare the mathematical analysis. When the two methods are compared with each other, a good agreement is obtained. Therefore, using the above methods, we can predict the cogging torque without manufacturing the motor, and we can use the above method to design the various type brushless DC motors.

균제도를 고려한 조명설계의 경제성 평가

오성보 제주대학교 공과대학 첨단기술연구소 2004 尖端技術硏究所論文集 Vol.15 No.1

Lighting must be visually comfortable and be responsive to the psychological and emotional needs of learners. The goal of educational facility lighting is to provide in a visual environment for both student and instructor that is supportive of the learning processes. This paper presents study on actual illumination environment of college and comparison of economical efficiency in order to figure out illumination problems. Furthermore, it attempts to suggest an optimum design of lecture room illumination through computer simulation. We try to evaluate economical efficiency of lighting design in lecture room under the illumination plan which is based on illumination maintenance and uniformity ratio that K.S. illumination standard sets.

대학 강의실의 최적 조명설계

오성보,김덕구 제주대학교 공과대학 첨단기술연구소 2003 尖端技術硏究所論文集 Vol.14 No.1

The goal of educational facility lighting is to provide in a visual environment for both student and instructor that is supportive of the learning processes. Lighting must also be visually comfortable and be responsive to the psychological and emotional needs of learners. This paper presents study on actual illumination environment of college in order to figure out illumination problems. Furthermore, it attempts to suggest an optimum design of Lecture room illumination through computer simulation. We try to attain models of optimum lighting design Lecture room illumination under the illumination plan which is based on illumination maintenance and uniformity ratio that K.S. illumination standard sets.

반파정류브러쉬없는 동기전동기의 디지탈 위치제어

오성보 濟州大學校 工科大學 産業技術硏究所 1994 産業技術硏究報告 Vol.5 No.-

Digital position control of brushless synchronous motor is one of the attractive and interesting research subjects in the field of industrial robot. A direct - drive (D-D) system is being developed to control the forces and position of high speed and high accuracy. The PI control without any additional control process has very poor response and inac-curacy of position. In order to improve those problem, We proposed a repetitive control with the position memory type, learning process. It provides us the good response of system and the improval of position accuracy.

공간전압벡터 PWM 기법을 이용한 유도전동기 구동특성 해석

문상호,오성보 濟州大學校工科大學産業技術硏究所 1999 尖端技術硏究所論文集 Vol.10 No.1

This paper describes the driving characteristics of induction motor using the Space Voltage Vector Pulse Width Modulation(SVPWM) and Sinusoidal Pulse Width Modulation(SPWM) method. We understand the characteristics of two PWM method applied the vector control theory to the induction motor equivalent circuit. We compare the SVPWM with SPWM of the current ripple and liner control domain. They are improved by using the SVPWM method. The improved effects are verified by simulation.

브러쉬없는 직류전동기의 디지탈 속도제어

오성보 濟州大學校工科大學産業技術硏究所 1995 尖端技術硏究所論文集 Vol.6 No.-

Digital speed control of brushless DC motor is one of the attractive and interesting research subjects in the field of industrial robot. A direct-drive(D-D) system is being developed to control the forces and the high speed and the constant speed. The PI control without any additional control process has very poor response and inaccuracy of speed. It is one of the important problems to reduce the speed fluctuation caused by the arm weight. In order to improve those problems, we proposed a repetitive control for the constant speed by learning process. It provides us the good response of system and the improvement of speed accuracy.

브러쉬리스 直流電動機의 코깅 토오크 比較解析

吳性寶 濟州大學校工科大學附屬産業技術硏究所 1990 尖端技術硏究所論文集 Vol.1 No.-

본 연구에서는 영구자석 브러쉬리스 직류전동기의 코깅 토오크를 해석하기 위하여 수학적 해석과 실험에 의한 방법을 사용하였는데 일반적으로 실험적 해석 방법은 적용범위가 국한되어 아주 미세한 코깅 토오크를 정확하게 측정하는 것이 어렵다. 그 이유는 코깅 토오크를 측정하고자 하는 전동기의 정격속도의 약 1퍼센트 정도의 극저속으로 돌려져 측정하고자 하는 전동기가 외부 구동전동기에 정확하게 일직선 상에 놓여 있는 상태에서 디지탈 측정기로 측정하여야 한다. 그러나 이때 아주 미세한 마찰이 존재하면 코깅 토오크를 정확하게 측정하는 것이 어렵기 때문에 실제 전동기를 설계하는 과정에서는 적용하기가 어려우므로 전동기 설계시 이 방법에 의한 설계를 한다는 것이 불합리함을 알 수 있었다. 따라서 본 연구에서는 수학적해석에 의한 방법을 제시하여 실험에 의한 방법과 정량적으로 잘 일치함을 알 수 있기 때문에 이방법을 이용하여 여러가지 형태의 새로운 영구자석 브러쉬리스 직류전동기 설계에 있어 코깅 토오크의 정밀해석에 유효할 것으로 사료된다. This thesis describes a study on cogging torque comparative analysis of brushless DC motor, which is one of torque ripple. These features have made brushless DC motors as one of the best choices which replace conventional brush-type DC motors in servo and robotics application. A cogging torque among the torque ripple in brushless DC motors is mainly due to the fluctuations of the field distribution which depends on the motor structure. The purpose of this thesis is to develop mathematical analysis and the experimental method of torque capable of accurately predicting the cogging torque. In this thesis, two methods which enable us to predict the amount of cogging torque are presented. One is the mathematical analysis using the analytic solution of flux density. The second is the experimental method which measures cogging torque in order to compare the mathematical analysis. When the two methods are compared with each other, a good agreement is obtained. Therefore, using the above methods, we can predict the cogging torque without manufacturing the motor, and we can use the above method to design the various type brushless DC motors.

브러쉬없는 직류전동기의 디지탈 속도제어

오성보 濟州大學校 産業技術硏究所 1995 산업기술연구소논문집 Vol.6 No.-

Digital speed control of brushless DC motor is one of the attractive and interesting research subjects in the field of industrial robot. A direct-drive(D-D) system is being developed to control the forces and the high speed and the constant speed. The PI control without any additional control process has very poor response and inaccuracy of speed. It is one of the important problems to reduce the speed fluctuation caused by the arm weight. In order to improve those problems, we proposed a repetitive control for the constant speed by learning process. It provides us the god response of system and the improvement of speed accuracy.

반파정류브러쉬없는 동기모우터의 디지탈제어

오성보 濟州大學校 産業技術硏究所 1997 산업기술연구소논문집 Vol.8 No.1

Digital control of half-wave rectified brushless synchronous motor is one of the attractive and interesting research subjects in the field of industrial robot. A direct-drive(D-D) system is being developed to control the forces, the position of high speed and the constant speed in high accuracy. The PI control without any additional control process has very poor response and inaccuracy of position and speed. It is one of the important problems to reduce the fluctuation of position and speed. In order to improve those problem, we proposed a repetiteve control with the position memory type and the constant speed by learning process. It provides us the good response of system and the improvement of the position and the speed accuracy.