Job Shop Scheduling Focusing on Role of Buffer

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  • HINO Rei
    Department of Production Systems Engineering, Toyohashi University of Technology
  • KUSUMI Tetsuya
    豊橋技術科学大学大学院工学研究科博士課程前期 [現 : 大昭和精機 (株)]
  • YOO Jae-Kyu
    Department of Production Systems Engineering, Toyohashi University of Technology
  • SHIMIZU Yoshiaki
    Department of Production Systems Engineering, Toyohashi University of Technology

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Other Title
  • バッファを考慮にいれたジョブショップスケジューリング
  • バッファ オ コウリョ ニ イレタ ジョブショップスケジューリング

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A scheduling problem is formulated in order to consistently manage every production resource such as machine tool, assembly robot, AGV, storehouse, material shelf, and so on. The production resources are classified into three devices, which are producer, location, and mover. This paper especially focuses on a role of buffer, and the differences among these devices are analyzed. A unified scheduling formulation is derived from the results of the analysis based on the role of the devices. Scheduling procedures based on dispatching rules are also proposed in order to numerically evaluate job shop type production with finite buffer capacity. The influence of capacity of bottle necked production devices and the buffer on the productivity are discussed.

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