http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
소명옥,류길수 한국마린엔지니어링학회 1996 한국마린엔지니어링학회지 Vol.20 No.4
Recently, fuzzy and neural network techniques have been successfully applied to control of complex and ill-defined system in a wide variety of areas, such as robot, water purification, automatic train operation system and automatic container crane operation system, etc. In this paper, we present a neuro-fuzzy controller which unifies both fuzzy logic and multi-layered feedforward neural networks. Fuzzy logic provides a means for converting linguistic control knowledge into control actions. On the other hand, feedforward neural networks provide salient features, such as learning and parallelism. In the proposed neuro-fuzzy 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 square estimation method. Finally, the effectiveness of the proposed controller is verified through computer simulation of an inverted pendulum system.
소명옥,류길수,이준탁 한국마린엔지니어링학회 1996 한국마린엔지니어링학회지 Vol.20 No.2
This paper presents the linearized fuzzy modeling technique of nonlinear dynamical system and the stability analysis of fuzzy control system. Firstly, the nonlinear system is partitionized by multiple linear fuzzy subcontrol systems based on fuzzy linguistic variables and fuzzy rules. Secondly, the disturbance adaptaion controllers which guarantee the global asymptotic stability of each fuzzy subsystem by an optimal feedback control law are designed and the stability analysis procedures of the total fuzzy control system using Lyapunov functions and eigenvalues are discussed in detail through a given illustrative example.
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,유희한,박재식,남택근,최재준,이병찬 한국마린엔지니어링학회 2003 한국마린엔지니어링학회지 Vol.27 No.6
The amount of container freight continuously has been increased. and the low efficiency of container crane causes jamming frequently in transportation and cargo handling at port. The conventional control techniques based on a mathematical model are not well suited for dealing with ill-defined and uncertain systems. Recently. Fuzzy control has been successfully applied to a wide variety of practical problems as robots. automatic train operation system. etc. 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 form. Finally. to exhibit the tracking performance and robustness of the proposed controller. computer simulations were carried out with various references, parameter variations and disturbances.
소명옥,정재학,류길수 한국마린엔지니어링학회 1993 한국마린엔지니어링학회지 Vol.17 No.5
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 found 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.
컨테이너 크레인을 위한 레일 클램프 유압 시스템의 3D 모델링
소명옥(Myung-Ok So),오세준(Sea-Jun Oh),권석경(Seok-Kyung Kwon),김다애(Da-Ae Kim),김진희(Jin-Hee Kim),이선호(Sun-Ho Lee),이정훈(Jeong-Hun Lee),천정성(Jeong-Sung cheon),황태웅(Tae-Woong Hwang),소건백(Gun-Baek So),강선이(Sun-Yi Kang),윤석 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-
본 연구는 컨테이너 크레인의 레일 클램프 유압 시스템을 3D로 모델링한고, 키보드나 마우스의 간단한 조작으로 분해조립을 실습할 수 있으며 실제 장비와 거의 유사하게 작동할 수 있는 컨테이너 크레인용 레일 클램프 유압 시뮬레이터를 개발하기 위한 기초에 목표를 둔다.
소명옥(Myung-Ok So),오세준(Sea-Jun Oh),김다애(Da-Ae Kim),김진희(Jin-Hee Kim),황태웅(Tae-Woong Hwang),이선호(Suh-Ho Lee),천정성(Jung-Sung Cheon),이정훈(Jung-Hun Lee),소건백(Gun-Baek So),강선이(Sun-Yi Kang),박하늘(Ha-Neul Park),이종은(Jon 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-
본 연구는 와이어 로프 텐션너의 유압 시스템을 3D로 모델링한고, 키보드나 마우스의 간단한 조작으로 분해조립을 실습할 수 있으며 실제 장비와 거의 유사하게 작동할 수 있는 로프 텐션너의 유압 시뮬레이터를 개발하기 위한 기초에 목표를 둔다.
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(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.