English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 80990/80990 (100%)
造訪人次 : 41625811      線上人數 : 1961
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋


    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/29530


    題名: Zone design and control for vehicle collision prevention and load balancing in a zone control AGV system
    作者: Ho,YC;Liao,TW
    貢獻者: 工業管理研究所
    關鍵詞: AUTOMATED GUIDED VEHICLE;FLOW PATH DESIGN;MANUFACTURING SYSTEM;TANDEM CONFIGURATIONS;MACHINE LAYOUT;ALGORITHM;DEADLOCK;ASSIGNMENT;STRATEGY
    日期: 2009
    上傳時間: 2010-06-29 20:27:18 (UTC+8)
    出版者: 中央大學
    摘要: Because of their routing flexibility. automated guided vehicles (AGVs) have been used in many manufacturing systems, especially those in which parts with diverse and complex processing routes are made. in recent years, there have been many studies on AGV-related problems. One of them is preventing the collision of vehicles, Some traditional vehicle collision prevention strategies are zone strategies that divide guide paths into several non-overlapping zones and restrict the presence of only one vehicle in any zone at any time. Traditional zone strategies are fixed zone strategies in which the area of a zone is fixed and vehicles are not allowed to help each other. Because of these restrictions, fixed zone strategies cannot always satisfy the system's transportation demand if there is a load imbalance between vehicles of different zones. In this paper, a new zone strategy is proposed for a zone control AGV system with a network guide path. The proposed strategy is a dynamic zone strategy, which is different from a fixed zone strategy. It relies on two methods - zone partition design and dynamic zone control - to prevent the collision of vehicles and to maintain the load balance between the vehicles of different zones. The zone partition design defines a relationship coefficient, which measures both the distance relationship and the flow relationship between workstations, and uses it to find an initial zone partition design. We then improve this initial design by an SA (Simulated Annealing) based improvement procedure to achieve a better load balance result. The dynamic zone control uses two methods - zone repartition and load sharing - to ensure that vehicle collision can be prevented and the system's load balance can be maintained when the system is in operation. Simulation experiments were conducted to understand the performance of the proposed strategy. The simulation results show that the proposed strategy outperform the fixed zone strategy in throughput, WIP inventory, and flow time. The results also show that the proposed strategy is able to adapt to any changes (in the system) that cause the load imbalance problem between zones. (C) 2008 Elsevier Ltd. All rights reserved.
    關聯: COMPUTERS & INDUSTRIAL ENGINEERING
    顯示於類別:[工業管理研究所 ] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML866檢視/開啟


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明