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컨테이너 크레인 시뮬레이터 개발을 위한 크레인 및 고장 설정에 관한 기초연구
소명옥(Myung-Ok So),최한우(Han-Woo Choi),이윤형(Yun-Hyung Lee),진선호(Sun-Ho Jin),최재준(Jae-Jun Choi) 한국마린엔지니어링학회 2004 한국마린엔지니어링학회 학술대회 논문집 Vol.2004 No.-
As crane demands for operational safety and efficiency have been intensified, the skill requirements for crane drivers have becoming increasingly complicated and intricate. Thus, the need exists for effective training devices to better prepare crane drivers for the challenges that they will encounter in the actual crane operating environment. Utilizing simulation technology, even the most skillful and experienced crane drivers are able to improve most aspects of their operating skills. Operating a crane simulator can provide much more valuable experience than actual crane operation. Situations requiring high skill levels can be practiced repeatedly and, even though mistakes may be made, damage to actual equipment and injury to personnel does not occur. As the basic study on crane simulator, this paper introduces developers the setting of crane speed, weights, wind, sway, and the fault setting of twist lock, flippers, spreader lamps, and hydraulic systems, etc.
소명옥(Myung-Ok So),이찬하(Chan-Ha Lee),오세준(Sea-Jun Oh),유희한(Heui-Han Yoo),박재식(Jae-Sik Park),최한우(Han-Woo Choi),이윤형(Yun-Hyung Lee),강인철(In-Chul Kang),남택근(Taek-Kun Nam) 한국해양대학교 해사산업연구소 2002 海事産業硏究所論文集 Vol.12 No.-
Nowdays marine diesel engines are becoming slow speed, long stroke and using fewer cylinders for saving fuel oil and increasing output per cylinder to get improved propulsion efficiency. Consequently the variation of rotational torque became larger because of the longer delay-time in fuel oil injection process. Focusing on the speed control of a marine diesel engine, the hydraulic governors are still used where the speed variation is allowed to some degree. When the engine load varies abruptly in rough sea, the conventional hydraulic governors are not enough for good control. For solving this problem, we present a fuzzy-PID controller which unifies both fuzzy control technique and PID control technique. Finally the effectiveness of the proposed controller is verified through computer simulation of a long stroke low speed marine diesel engine.
소명옥,이현식,진강규,So Myung-Ok,Lee Hyun-Sik,Jin Gang-Gyoo 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.4
In recent years, AGVs(Automated Guided Vehicles) have received growing attention as a subsystem of the integrated container operating system which enables unmanned control. improvement of job reliability, accuracy and productivity. Therefore, a number of works have been done to enhance the performance AGVs. In this paper. job deployment and a dynamic routing control system composed of supervisor, traffic controller. motion controller and routing table are discussed. A simple job deployment scheme and an efficient dynamic routing algorithm incorporating with the deadlock prediction and avoidance algorithm are investigated.
RCGA에 기초한 선박 가스터빈 엔진용 PID 제어기의 동조
소명옥,정병건,진강규,진선호,이윤형,So Myung-Ok,Jung Byung-Gun,Jin Gang-Gyoo,Jin Sun-Ho,Lee Yun-Hyung 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.1
The PID controllers have been widely accepted in many industrial systems due to their robust performance in a wide range of operating conditions and their functional simplicity To implement a PID controller, its three parameters must be determined for the given plant. Conventional tuning methods are mainly based on experience and experiment and are lack of systematic procedure Recently. to overcome drawbacks of conventional tuning methods, genetic algorithms have been used, In this paper a real-coded genetic algorithm is employed to search for the optimal parameters of the PID controller for speed control of marine gas turbine engines. Simulation results show the effectiveness of the proposed scheme.
소명옥(Myung-Ok So),진선호(Sun-Ho Jin),최한우(Han-Woo Choi),이윤형(Yeun-Hyung Lee),최우철(Woo-Chul Choi),윤학진(Hak-Jin Yeun),최재준(Jae-Jun Choi) 한국마린엔지니어링학회 2003 한국마린엔지니어링학회 학술대회 논문집 Vol.2003 No.-
In this paper, we present a adaptive fuzzy neural network controller which unifies both fuzzy logic and multi layered feedforward neural networks. In the proposed adaptive fuzzy neural network controller, the parameters of membership functions in the antecedent part of fuzzy inference rules are identified by using the error backpropagation algorithm as a learning rule, while the coefficients of the linear combination of input variables in the consequent part are determined by using the least squared estimation method. Finally, the effectiveness of the proposed controller is verified through computer simulation of a container crane system.
소명옥(Myung-Ok So),최재준(Jae-Jun Choi),손정기(Jeong-Ki Son) 한국해양대학교 해사산업연구소 2001 海事産業硏究所論文集 Vol.11 No.-
The amount of container freight is continuously increasing recently, but freight congestion problem frequently occurs at ports due to low efficiency of container crane operation in transportation and cargo handling. In this paper, a Fuzzy controller for container crane is proposed to accomplish a design of improved control system for minimizing the swing motion at destination. In this scheme a mathematical model for the system is obtained in state space representation. Finally, the effectiveness of the proposed controller is verified through computer simulation of a container crane system.
소명옥(Myung-Ok So),오세준(Sae-June Oh),유희한(Heui-Han Yoo),남택근(Taek-Kun Nam),강인철(In-Chul Kang),이찬하(Chan-Ha Lee),최한우(Han-Woo Choi) 한국해양대학교 해사산업연구소 2001 海事産業硏究所論文集 Vol.11 No.-
An Inverted Pole is one of the control mechanism that has been frequently used to verify a control theory in the laboratory. It consists of a cart which slides on a ground stainless steel shaft. This paper is to design a LQ controller for an inverted pole system which is capable of maintaining the pole at vertical position. In this scheme a mathematical model for the system is obtained in state space representation. Finally the effectiveness of the proposed controller is verified through computer simulation of an inverted pole system.
컨테이너 크레인을 위한 스프레더 유압 시스템의 3D 모델링
소명옥(Myung-Ok So),최재준(Jae-Jun Choi),권은옥(En-Ok Kwon),김명진(Myung-Jin Kim),권석경(Seok-Kyung Kwon),김다애(Da-Ae Kim),김진희(Jin-Hee Kim),황태웅(Tae-Woong Hwang),강선이(Sun-Yi Kang) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
본 연구는 컨테이너 크레인의 스프레더를 3D로 모델링한고, 키보드나 마우스의 간단한 조작으로 분해조립을 실습할 수 있으며 실제 장비와 거의 유사하게 작동할 수 있는 컨테이너 크레인용 스프레더 시뮬레이터를 개발하기 위한 기초에 목표를 둔다.
소명옥(Myung-Ok So),안종갑(Jong-Kap Ahn),이윤형(Yun-Hyung Lee),최재준(Jae-Jun Choi),류기탁(Ki-Tak Ryu),이창호(Chang-Ho Lee) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
The T-S fuzzy model of a ship is made from Nomoto 2nd order nonlinear extension model as the previous step before designing of the fuzzy type autopilot system to consider of the design specifications and the economic efficiency. The T-S fuzzy model is considered as a design variable of the heading angular velocity of ship. The linear models will be combined as "IF-THEN" fuzzy rules after get in this one area of the linear model(sub-system) by change of the heading angular velocity of a ship. The dynamic characteristic of a ship with the parameters of linear models and fuzzy membership functions are estimated to match by using the model adjustment technic with input/ouput datas and a RCGA.
항만효율향상을 위한 컨테이너 크레인의 강인한 제어기 설계
소명옥(Myung-Ok So),이영재(Young-Jae Lee),장하룡(Ha-Ryong Jang),유희한(Hei-Han Rhyu),오세준(Sae-June Oh),류길수(Keel-Soo Rhyu) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
In this paper we present an interpolation-LQ control technique which tunes continuously the gain of controller by interpolating the gain(Lagrangian interpolation method) of sub-LQ controllers. The proposed controller design technique is applied to the container crane system for simulations. Several cases of simulations are carried out in order to prove the control effectiveness and robustness. The simulation results of proposed controller are compared with those of LQ controller. The results showed better control performance than those of LQ controller.