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RISS 인기검색어
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- 저자 : 옥창훈(Chang Hun Ok) (검색결과 3 건)
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옥창훈,김득수,공정수,서윤호,Ok, Chang-Hun,Kim, Duk-Su,Gong, Jung-Su,Seo, Yoon-Ho 한국시뮬레이션학회 2012 한국시뮬레이션학회 논문지 Vol.21 No.2
자동차 생산라인은 차체라인, 도장라인, 의장라인으로 구성된다. 이러한 생산라인들은 직렬로 배치되어 흐름생산을 거치기 때문에 전후 공정의 상태에 따라 라인에서는 starvation(물량 부족으로 인한 생산 불가능) 또는 blocking(용량 초과로 인한 생산 불가능)으로 인한 정지가 발생한다. 이에 starvation이나 blocking으로 오는 생산 손실을 막기 위해 WBS, PBS와 같은 창고를 개별적으로 보유하여 운영된다. 본 논문은 라인의 버퍼역할을 하는 각 창고들을 통합하여 운영할 수 있는 통합창고 시뮬레이션 모형을 제안한다. 적정 Stacker Crane 대수와 AGV 대수를 구하고, 이를 운영할 수 있는 운영방법론을 제안한다. 또한 개별창고와 통합창고 모형을 시뮬레이션을 이용하여 효율성 비교를 한다. Automobile manufacturing consists of body-line, painting-line, and assembly-line. These production lines are disposed in series and go through a flow process, so according to the status of pre & post processing, a suspension happens in a line by a starvation(impossibility of production by insufficient supply) or blocking(impossibility of production by exceed capacity). Therefore, to prevent a loss of production coming from a starvation or blocking, a storage such as WBS or PBS is independently owned and operated. The paper suggests the simulation model of integrated storage which can operate it by integrating each storage performing a role as a buffer of line. Specifically, the paper found the answers about reasonable number of Stacker Crane and AGV(Automatic Guided Vehicle) and suggested a methodology of operation which is available to operate them. Also, it compared an efficiency between a model of current storage and integrated storage through simulation. As a result, it turned out that the model suggested in the paper was more efficient on suspension of painting-line stop than a current storage.
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옥창훈(Chang Hun Ok),김득수(Duk Su Kim),서윤호(Yoonho Seo),공정수(Jung Su Gong) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2
Automobile manufacturing consists of body-line, painting-line and assembly-line. And to prevent the production loss by starvation or blocking, all lines have buffers respectively. This paper focuses on the integrated storage design including WBS(White Body Storage), CRS(Color Rescheduling Storage), PBS(Painted Body Storage). This paper approaches three steps as follows: first, calculating the number of AS/RS and AGV. Second, proposing the dispatching rule to keep the production rate in an assembly-line. And then lastly, the proposed integrated storage model is compared with current storage model using simulation. And simulation result shown that the proposed model is more effective and flexible then current storage model to printing line stop.
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남기호(Kee-ho Nam),옥창훈(Chang-Hun Ok),서윤호(Yoonho Seo) 한국산업경영시스템학회 2011 한국산업경영시스템학회지 Vol.34 No.4
To date, facility layout problems has been solved and applied for job shop situations. Since flow shop has more restrictions, the solution space is much smaller than job shop. An efficient heuristic algorithm for facility layout problems for flow shop layouts is needed to be developed. In this thesis, a heuristic algorithm for rectangular bay layouts in a flow shop situation is presented. The proposed algorithm is developed by using slicing tree representation and applied to various flow shop layout problems. The effectiveness of the proposed algorithm in terms of exploration rate and objective function value are shown by comparing our results to simulated annealing.
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