An Optimization Method for Routing Problems for Multiple AGVs by Decomposition of Petri Nets

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  • MAENO Ryota
    The Graduate School of Natural Science and Technology, Okayama University
  • NISHI Tatsushi
    The Graduate School of Natural Science and Technology, Okayama University
  • KONISHI Masami
    The Graduate School of Natural Science and Technology, Okayama University

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Other Title
  • ペトリネットを用いたＡＧＶ経路計画問題の分解法による最適化
  • ペトリネット オ モチイタ AGV ケイロ ケイカク モンダイ ノ ブンカイホウ ニ ヨル サイテキカ

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In this paper, we propose a decomposition and coordination method for routing problems for multiple automated guided vehicles (AGVs) using Petri Nets. An extended Petri Net model is created to represent concurrent motion of multiple AGVs. The routing problem to minimize total transportatin time is formulated by the proposed Petri Net. The optimization model for the Petri Net is decomposed into several subproblems which can be solved by Dijkstra's algorithm in polynomial order. The effectiveness of the proposed method is evaluated by several numerical examples.

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