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진강규(G. G. Jin),이윤형(Y. H. Lee),이현식(H. S. Lee),진상훈(S. H. Jin),이승환(S. H. Lee),소명옥(S. M. So),황승욱(S. W. Hwang) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-
Controlling engine coolant temperature is one of the tasks performed by today's cooling systems. In this paper, we present the PID control of vehicle cooling systems with a hydraulic coupling to overcome the inherent problem with direct-drive fans. The PID controller is tuned by a real-coded genetic algorithm(RCGA) and anti-windup is incorporated with the PID controller. Simulation is carried out to show the performance.
컨테이너 크레인 시뮬레이터 개발을 위한 환경설정에 관한 기초연구
소명옥(M. O. So),최한우(H. W. Choi),이윤형(Y. H. Lee),윤학진(H. J. Yeun),최재준(J. J. Choi) 한국해양대학교 해사산업연구소 2003 海事産業硏究所論文集 Vol.14 No.-
The skill of the crane operator has influence on the overall profitability of a transport. But, It is very hard to train crane operators effectively by actual crane. Therefore, it is desirable for the crane simulator to be used properly, considering various condition of the crane operation. The purpose of the container crane simulator is to provide a facility for training and evaluation of crane operators and aspirants. Training using crane simulator provides crane operators with the increased safety and high efficiency. Hence, as the basic study on crane simulator, this paper introduces developers the kinds of training education programs and the setting up of environmental conditions for virtual reality crane simulator.
진강규(G. Jin),박동진(D. Park),찬탄도(T. Tran),이현식(H. Lee),이윤형(Y. Lee),하윤수(Y. Ha) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
In this paper, we presents an algorithm which generates its high-resolution map using a low-resolution 3D map of the sea floor terrain and fractal theory. Each patch region is divided from the 3D map and its fractal dimension is extracted. And then with this information, each cell in a patch is reconstructed using the midpoint displacement method. The effectiveness of the proposed algorithm is tested on a fractal terrain map.
소명옥(M. O. So),류길수(K. S. Rhyu),정재학(J. H. Chung),이윤형(Y. H. Lee),진선호(S. H. Jin),최한우(H. W. Choi) 한국해양대학교 해사산업연구소 2003 海事産業硏究所論文集 Vol.14 No.-
Generally, the main difficulty in the composition of tank-level control system may be in the point that plant parameters are severely varied according to the change of operating point. In order to cope with this difficulty, in this paper, an adaptive control is employed using model-following technique based on the optimal control law. Through the simulations and experiments the following results were observed. 1) The steady state error was not founded under the parameter variations caused by the change of operating point. 2) In spite of the change of operating point, the corresponding gains which were stored in the computer were found to be automatically updated so that the controller could have the adaptive ability. And also, the control specifications in view of transient response were found to be satisfied.