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Optimal location of dwell points in a single loop AGV system with time restrictions on vehicle availability

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  • Ventura, José A.
  • Rieksts, Brian Q.
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    Abstract

    Since the workload of a manufacturing system changes over time, the material handling equipment used in the facility will be idle at certain time intervals to avoid system overload. In this context, a relevant control problem in operating an automated guided vehicle (AGV) system is where to locate idle vehicles. These locations, called dwell points, establish the response times for AVG requests. In this article, a dynamic programming algorithm to solve idle vehicle positioning problems in unidirectional single loop systems is developed to minimize the maximum response time considering restrictions on vehicle time available to travel and load/unload requests. This polynomial time algorithm finds optimal dwell points when all requests from a given pick-up station are handled by a single AGV. The proposed algorithm is used to study the change in maximum response time as a function of the number of vehicles in the system.

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    Bibliographic Info

    Article provided by Elsevier in its journal European Journal of Operational Research.

    Volume (Year): 192 (2009)
    Issue (Month): 1 (January)
    Pages: 93-104

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    Handle: RePEc:eee:ejores:v:192:y:2009:i:1:p:93-104

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    Web page: http://www.elsevier.com/locate/eor

    Related research

    Keywords: Dynamic programming Automated guided vehicles Dwell points;

    References

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    1. Asef-Vaziri, Ardavan & Laporte, Gilbert & Ortiz, Robert, 2007. "Exact and heuristic procedures for the material handling circular flow path design problem," European Journal of Operational Research, Elsevier, vol. 176(2), pages 707-726, January.
    2. Asef-Vaziri, Ardavan & Laporte, Gilbert, 2005. "Loop based facility planning and material handling," European Journal of Operational Research, Elsevier, vol. 164(1), pages 1-11, July.
    3. Egbelu, Pius J., 1993. "Positioning of automated guided vehicles in a loop layout to improve response time," European Journal of Operational Research, Elsevier, vol. 71(1), pages 32-44, November.
    4. Gademann, A. J. R. M. & van de Velde, S. L., 2000. "Positioning automated guided vehicles in a loop layout," European Journal of Operational Research, Elsevier, vol. 127(3), pages 565-573, December.
    5. Kim, Kap Hwan, 1995. "Positioning of automated guided vehicles in a loop layout to minimize the mean vehicle response time," International Journal of Production Economics, Elsevier, vol. 39(3), pages 201-214, May.
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