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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.
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.
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.
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.
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.
오성보,김덕구 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.2
When fixed-lighting principles and techniques are properly applied, the visibility provided on these public ways can provide economic and social benefits to the public. Fixed lighting of public ways for both vehicles and pedestrians can create a nighttime environment in which people can see comfortably and can quickly and accurately identify objects on the roadway being travelled. Roadway lighting can improve traffic safety, achieve efficient traffic movement and promote the general use of the facility during darkness. This paper describes estimation of horizontal illuminance by actual measurement at main streets in Jejusi. We try to evaluate Jejusi Roadway Lighting Conditions for modeling by computer simulation.
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.
吳性寶 濟州大學校工科大學附屬産業技術硏究所 1994 尖端技術硏究所論文集 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 P I control without any additional control process has very poor response and inaccuracy 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.
오성보,김덕구 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.2
The possible risks of ELF electromagnetic fields on electric power facilities for the human body, is a growing concern for the society. In recent years, we have had many civil application about electromagnetic fields according to increasing of construction of electric power facilities. This paper describes human body effect by regulation management and the guidelines of human body protection of electromagnetic field. We try to evaluate the effect of electromagnetic fields by actual measurement at electric power facilities in Jeju.