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이권희,민경암,박형욱,한동섭,한근조 한국항해항만학회 2005 한국항해항만학회지 Vol.29 No.5
LMTT는 항만 자동화를 위한 수평 이송이 가능하도록 설계된 셔틀카(shuttle car)와 격자구조의 레일에 부착된 스테이터 모듈(stator module)로 구성된 PMLSM(Permanent Magnetic Linear Synchronous Motor)에 의해 구동된다. 본 논문에서는 강도 및 강성기준을 고려하고 경량화 설계를 위하여 셀 요소로 유한요소 모델링된 이동체(mover)의 구조최적설계를 수행하였다. 설계변수로는 가로빔, 세로빔, 휠 빔의 두께와 가로빔 및 세로빔의 높이를 포함시켰다. 목적함수는 중량, 제한조건 함수는 안전율이 고려된 허용응력과 가로빔의 허용변위로 설정하였다. LMTT (Linear Motor-based Transfer Technology) is the horizontal transfer system for yard automation, which has been proposed to take the place of AGV (Automated Guided Vehicle) in the maritime container terminal. The system is based on PMLSM (Permanent Magnetic Linear Synchronous Motor) that consists of stator modules on the rail and shuttle car. It is desirable to reduce the weight of LMTT in order to control the electronic devices with minimum energy. In this research, structural optimization for a mover of shuttle car is performed to minimize the weight satisfying design criteria. The objective function is set up as weight. On the contrary, the design variables are transverse, longitudinal and wheel beams’ thicknesses and its height, and the constraints are considered as strength and stiffness.
안태원(Tae-Won An),한근조(Geun-Jo Han),한동섭(Dong-Seop Han),이성욱(Seong-Wook Lee),이정명(Jung-Myung Lee),이경민(Kyong-Min Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.4
LMTT(Linear Motor based Transfer Technology) is a new type of transfer system used in the maritime container terminal for the port automation, and largely consists of a controller, shuttle car, and rail. The shuttle car is divided into the frame part, the driving part, and wheels. In order to design this system, various researches on each part of it must be conducted. In this study, we dealt with the optimum design for the frame part of the shuttle car designed from previous studies on the strength of the frame with respect to the number of cross beams to minimize the weight of the shuttle car and to satisfy design criteria of cargo-handling systems in container terminal. For the optimization of the frame, thicknesses of each beam was adopted as design variables, the weight of the frame as objective function, and stress and deflection per unit length as constraint condition.
Ant Colony 알고리즘과 퍼지추론 기법을 이용한 LMTT 셔틀카의 최적 스케줄링 설계
송대현(Dai-Hyun Song) 산업기술교육훈련학회 2011 산업기술연구논문지 (JITR) Vol.16 No.1
본 논문은 항만 내에서 자동화에 적용될 수 있는 선형전동기 기반 이송장치(Linear Motor-based Transfer Technology, LMTT)의 작업 스케줄 최적화에 관하여 다루었다. 제안한 방법은 ACA(Ant Colony Algorithm)과 최적화된 퍼지추론 알고리즘을 이용하여 구현되었으며, 제안한 알고리즘은 유전자적 기법에 기반을 두고 각각의 룰을 생성하도록 구성되었다. 제안한 기법은 실제 항만모델에 적용하여 실용성의 검증이 가능하였으며, 시뮬레이션 결과를 통하여 퍼지 시스템을 통한 LMTT 이송차량의 효과적인 작업 스케줄을 결정하는 과정을 확인할 수 있었다.
리니어 모터의 전기적 특성을 고려한 LMTT용 이동체의 최적설계
안태원(T. W. An),한근조(K. J. Han),한동섭(D. S. Han),이성욱(S. W. Lee),이경민(K. M. Lee),이정명(J. M. Lee) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
LMTT(Linear Motor based Transfer Technology) is a new type of transfer system used in the maritime container terminal for the port automation, and largely consists of a controller, shuttle car, and rail. The shuttle car is divided into the frame part, the driving part, and wheels. In order to design this system, various researches on each part of it must be conducted. In this study, we dealt with the optimum design for the frame part of the shuttle car designed from previous studies on the strength of the frame with respect to the number of cross beams to minimize the weight of the shuttle car and to satisfy design criteria of cargo-handling systems in container terminal. For the optimization of the frame, thicknesses of each beam were adopted as design variables, the weight of the frame as objective function, and stress and deflection per unit length as constraint condition.
유효 스프링 압축변위가 LMTT용 Shuttle Car의 충격흡수장치 충격 반력에 미치는 영향
임종현(Jonghyun Lim),한근조(Geunjo Han),한동섭(Dongseop Han) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
According to the increase of container trade throughout the world, the environment of ports is being fast changed and also the rapid increase of much transshipment cargo is expected. So, in the harbor loading and unloading system for the rapid treatment of transshipment cargo, the LMTT(Linear Motor-based Transfer Technology) that is horizontal transfer system in the maritime container terminal for the port automation is being studied. Therefore in this paper, to gain basic design data of shuttle car we studied the effect of effective spring compression displacement on the impact reaction force of the impact Absorbing system at the LMTT.
크리깅 근사모델 모델을 이용한 LMTT 이동체의 구조최적설계
박형욱(Hyung Wook Park),한동섭(Dong Seop Han),이권희(Kwon Hee Lee),한근조(Geun Jo Han) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
LMTT (Linear Motor-based Transfer Techn-ology) is a horizontal transfer system for the yard automation, which has been proposed to take the place of AGV(Automated Guided Vehicle) in the maritime container terminal. The system is base don PMLSM (Permanent Magnetic Linear Synchronous Motor) that consists of stator modules on the rail and shuttle car. It is desirable to reduce the weight of LMTT in order to control the electronic devices with minimum energy. In this research, the DACE modeling known as the one of Kriging interpolation, is introduced to obtain the surrogate approximation model of the structural responses. Then the GRG(Generalized Reduced Gradient) method built in Excel is adopted to determine the optimum. The objective function is set up as weight. On the contrary, the design variables are considered as transverse, longitudinal and wheel beam's thicknesses, and the constraints are the maximum stresses generated by four loading conditions.