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Group control of multi-car elevator systems without accurate information of floor stoppage time

Author

Listed:
  • Shunji Tanaka

    (Kyoto University
    Kyoto University)

  • Daiki Hoshino

    (Kyoto University)

  • Masashi Watanabe

    (Kyoto University)

Abstract

A multi-car elevator system is an elevator system that has more than one car installed in each elevator shaft. This system enables us to improve the transportation capability without increasing the occupied floor space. The primary purpose of this study is to consider the group control problem of operating cars efficiently without collision nor reversal in a multi-car elevator system, based on a detailed and realistic model where floor stoppage time of cars cannot be known in advance. In the context of elevator systems, reversal means that a car travels in the direction opposite to the desired direction of on-board passengers, which is prohibited because it makes passengers uncomfortable. We first propose an optimization-based collision and reversal avoidance method to operate cars in the same shaft. Next, we construct simple methods to allocate calls to individual cars under immediate and delayed guidance policies. Under the immediate guidance policy a call is allocated to a car immediately after it is registered, while under the delayed guidance policy the allocation may be changed until it is actually served. The effectiveness of the proposed group control method is examined by computer simulation.

Suggested Citation

  • Shunji Tanaka & Daiki Hoshino & Masashi Watanabe, 2016. "Group control of multi-car elevator systems without accurate information of floor stoppage time," Flexible Services and Manufacturing Journal, Springer, vol. 28(3), pages 461-494, September.
    • Handle: RePEc:spr:flsman:v:28:y:2016:i:3:d:10.1007_s10696-016-9238-6
    DOI: 10.1007/s10696-016-9238-6
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    References listed on IDEAS

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    1. Tanaka, Shunji & Uraguchi, Yukihiro & Araki, Mituhiko, 2005. "Dynamic optimization of the operation of single-car elevator systems with destination hall call registration: Part II. The solution algorithm," European Journal of Operational Research, Elsevier, vol. 167(2), pages 574-587, December.
    2. Tanaka, Shunji & Uraguchi, Yukihiro & Araki, Mituhiko, 2005. "Dynamic optimization of the operation of single-car elevator systems with destination hall call registration: Part I. Formulation and simulations," European Journal of Operational Research, Elsevier, vol. 167(2), pages 550-573, December.
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