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[학술강연] 자바를 이용한 전동기 인터넷 원격제어 시스템에 관한 연구
엄한성(H.S.Eom),김현수(H.S.Kim),안병원(B.W.Ahn),박영산(Y.S.Park),배철오(C.O.Bae) 한국마린엔지니어링학회 2002 한국마린엔지니어링학회 학술대회 논문집 Vol.2002 No.-
Recently, the development of internet remote control system has been studied lively along with fast growth of internet. In this paper, we proposed the .internet-based remote control and monitoring system using java platform for induction motor speed control. The apache web server that is now used worldwide was constructed for monitoring and controlling of an induction motor in administrator's web browser. We solved the limitation on security which is the biggest problem of internet control system due to strong security setting in web server. The change of induction motor's state linked to the server can be delivered to web browser used servlet and applet together in real time. Because of using java database connectivity, the various information of machine is stored with database and can be used easily in web browser. As a result of experiment which is used in the proposed remote internet control system, several time-delay occurred in internet. However, correct control result could be achieved without an error. RPM, current, frequency and control information of an induction motor could be monitored in almost real time.
남택근(T. K. Nam),노영오(Y. O. Roh),안병원(B. W. Ahn),박영산(Y. S. Park) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
This paper presents the control of an underactuated two-link and three-link acrobat robot. We derived system equations from the nonholonomic acceleration constraints by using the law of conservation of angular momentum. Then we applied zero dynamics to stabilize the two-link and three-link acrobat robot around its uppermost equilibrium point. Simulation results are given to show the effectiveness of the proposed control strategy.
안병원(B.W.Ahn),배철오(C.O.Bae),김현수(H.S.Kim),박영산(Y.S.Park),남택근(T.K.Nam) 한국마린엔지니어링학회 2003 한국마린엔지니어링학회 학술대회 논문집 Vol.2003 No.-
Though a legged robot has high terrain adaptability as compared with a wheeled vehicle, its moving speed is considerably low in general. For attaining a high moving speed with a legged robot, a dynamically stable walking, such as running for a biped robot and a trot gait or a bound gait for a quadruped robot. is a promising solution. However, energy efficiency of a dynamically stable walking is generally lower than the efficiency of a stable gait such as a crawl gait. In this paper, energy consumption of two walking patterns for a trot gait is simulated though modeling a quadruped walking vehicle named TITAN-Ⅷ.
박영산,안병원 木浦海洋大學校 2000 論文集 Vol.8 No.2
Vector control of an induction motor has achieved a quick torque response, and has been applied in various industrial applications instead of a DC motor. However, the performance is sensitive to the variations of motor parameters This paper presents a adaptive servo control system of the induction motor, which has adaptability to stator inductance, and a secondary time constant. The principle of the strategy is based on slip frequency controled indirect vector control and robust identifiers for parameters. To verify feasibility of the proposed algorithm experimental tests have been conducted.
노영오,안병원,박영산,김현수 木浦海洋大學校 2000 論文集 Vol.8 No.1
This paper presents a developed squirrel cage induction motor for axial flow fan. Nearly all of the induction motors for fan consists of two parts, rotor and stator, and the position of rotor is located inside of stator. This construction restricts the air flow rate, otherwise requires bending duct. But developed squirrel cage induction motor for axial flow fan exchanged the position each other. So, we can reduce the weight and size about 30%, and there are no bending duct to locate the fan motor.
안병원,김현수,박영산,박중순,노영오,배철오 木浦海洋大學校 2001 論文集 Vol.9 No.1
There are many different cards and keys that are used. But the functions or companies are different, so there are many inconvenience to carry and use. Nowadays, It is need to unite of many card functions in one card. Many companies are using card key for access offices instead of key and office going system. So, In this paper, We developed hardware and software that could do many function as one card. We trying to unite the functions of key and card into one card. In this system, it is used by individual credit card. We have no doubt the usefulness of this system for building and offices security system and office going system, etc.
안병원,배철오,박영산,박중순,김수겸,김현수 木浦海洋大學校 2001 論文集 Vol.9 No.1
To achieve good welding results in various welding application, seam tracking technology is essential. In this thesis, seam tracking algorithm using cartesian coordinate welding robots are investigated and discussed. Many types of seam tracking methods are used in industrial field usually. Especially, vision system using CCD camera and laser diode are used to track the seam. A structured laser diode's light is introduced on the weld groove and the reflected light image is captured by CCD camera. The captured image is transformed into 8 bit pixel data. The seam tracking algorithm is developed by processing the 8 bit pixel data.