Byung‐In Kim
포항공과대학교 기계공학과 · 공학
Byung-In Kim 교수의 연구실은 주로 반도체 제조 공정과 물류 시스템의 최적화를 중심으로 한 지능형 에이전트 기반 제어 및 스케줄링 기법을 연구하고 있습니다. 특히 오버헤드 호이스트 전송 시스템(OHT), 창고의 주문 피킹 문제, 철강판 적재 문제 등에서 실시간 동적 할당과 자원 최적 배분을 위한 혼합 제어 아키텍처와 휴리스틱 알고리즘을 개발하고 있습니다. 연구는 실제 산업 현장에서의 적용 가능성을 고려하여 수학적 모델링과 시뮬레이션 기반 성능 평가를 병행합니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
In this paper, we consider an actual industrial warehouse order picking problem where goods are stored at multiple locations and the pick location of goods can be selected dynamically in near real time. We solve the problem using an intelligent agent-based model. The modeling framework is between the two extremes of hierarchical and heterarchical frameworks. It recognizes that horizontal as well as vertical decisions are made between various levels of controllers and that these have to be captur
In recent years, the hybrid control framework has received attention from the research community. Variations of this control framework are available in the literature. In this paper, a hybrid intelligent agent-based scheduling and control system architecture is presented for an actual industrial warehouse order-picking problem, where goods are stored at multiple locations and the pick location of goods can be selected dynamically in near-real time. The presented architecture includes a higher le
This paper addresses the order picking sequence problem in an automated warehouse where parts of an order picker's travelling tour are fixed, the length of the layout is significantly longer than the width, and the picker can hold only one item at a given time. The problem is to find an optimal sequence with given vertical paths and so it is a special type of travelling salesman problem. A simple sorting-based heuristic and an efficient clustering-based algorithm are developed for this problem.
This paper proposes an efficient vehicle reassignment dispatching rule and demonstrates the effectiveness of the rule using an overhead hoist transport (OHT) system for a semiconductor fabrication line. The OHT system has more than 150 OHT vehicles and its target vehicle utilization level is 70%. It allows direct delivery such that an inter-bay wafer movement can be accomplished by a single vehicle. Simulation analysis is used to compare the proposed rule with the shortest travel distance first
This article examines a simplified steel plate stacking problem. Manufactured thick steel plates arrive in series at a storage area, which consists of a certain number of uncapacitated beds. The arriving plates are first stacked on beds, after which the plates are removed in the pre-defined delivery sequence. No more than one plate can be moved simultaneously. When a target plate is not in the top position of a bed, the plates that block the target plate must be relocated. This relocation of a p
