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퍼지 환경하에서 유연생산시스템 일정계획의 Pairwise 해법에 관한 연구
이상완,신대혁,윤연근,박병주 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2
FMS(Flexible Manufacturing System) scheduling problem is a complex system and a NP-hard problem. Thus it is natural to look for heuristic method. Here, we consider the multi-part production scheduling problem in a FMS scheduring of altemative routings. The problem in more complex if the processing time is imprecision. It requires suitable method to deal with imprecision. Fuzzy set theory can be useful in modeling and solving scheduling problems with uncertain processing times. Lee-Ki fuzzy number comparison method will be used to compare processing times that evaluated under fuzziness. This study propose heuristic algorithm solving FMS scheduling problem under fuzzy environment. In this algorithm, the pairwise comparision method is used to find proper alternative routing. On the basis of the proposed method, and example in presented.
李相玩,申大赫,兪炳哲 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.1
This paper deal with the concept of AS/RS and the closest available location is AS/RS. Travel-time model and minimum cost model have developed for automated storage/retrieval machine. In this article, it is shown that arrival loads follow Poisson process and duration times are independent of each other and have i. i. d. distribution. The objective of this study is mainly compare with existing research and propose new approach method to optimal location. We give approximate method for the K closest location.