Emergent Synchronization in Multi-Elevator System and Dispatching Control

Takashi HIKIHARA; Shinichi UESHIMA

Emergent Synchronization in Multi-Elevator System and Dispatching Control

Takashi HIKIHARA, Shinichi UESHIMA

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In this paper, we discuss an emergent behavior of a multi-elevator system. The system includes multiple elevators in an office building and the Poisson arrival of passengers as its input. Elevators move up and down to serve calls and carry passengers according to given working rules. The system is a representative discrete event dynamic system, and is a nonlinear complex system. When people leave a building at the closing time, the down-peak traffic of passengers occurs. We show numerically that (1) this causes a jamming effect, which reduces the transportation efficiency, (2) there exists a threshold in the arrival rate of passengers, at which the traffic rate starts decreasing, and (3) this jamming effect is due to the synchronization of elevators. Then we propose a dispatching control that prevents elevators from synchronizing. This control is applied to each elevator as an anxiliary working rule. We can remove the jamming effect and recover the transportation efficiency by the control.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E80-A No.9 pp.1548-1533

Publication Date: 1997/09/25

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Type of Manuscript: Special Section PAPER (Special Section on Nonlinear Theory and its Applications)

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Takashi HIKIHARA, Shinichi UESHIMA, "Emergent Synchronization in Multi-Elevator System and Dispatching Control" in IEICE TRANSACTIONS on Fundamentals, vol. E80-A, no. 9, pp. 1548-1533, September 1997, doi: .
Abstract: In this paper, we discuss an emergent behavior of a multi-elevator system. The system includes multiple elevators in an office building and the Poisson arrival of passengers as its input. Elevators move up and down to serve calls and carry passengers according to given working rules. The system is a representative discrete event dynamic system, and is a nonlinear complex system. When people leave a building at the closing time, the down-peak traffic of passengers occurs. We show numerically that (1) this causes a jamming effect, which reduces the transportation efficiency, (2) there exists a threshold in the arrival rate of passengers, at which the traffic rate starts decreasing, and (3) this jamming effect is due to the synchronization of elevators. Then we propose a dispatching control that prevents elevators from synchronizing. This control is applied to each elevator as an anxiliary working rule. We can remove the jamming effect and recover the transportation efficiency by the control.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/e80-a_9_1548/_p

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@ARTICLE{e80-a_9_1548,
author={Takashi HIKIHARA, Shinichi UESHIMA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Emergent Synchronization in Multi-Elevator System and Dispatching Control},
year={1997},
volume={E80-A},
number={9},
pages={1548-1533},
abstract={In this paper, we discuss an emergent behavior of a multi-elevator system. The system includes multiple elevators in an office building and the Poisson arrival of passengers as its input. Elevators move up and down to serve calls and carry passengers according to given working rules. The system is a representative discrete event dynamic system, and is a nonlinear complex system. When people leave a building at the closing time, the down-peak traffic of passengers occurs. We show numerically that (1) this causes a jamming effect, which reduces the transportation efficiency, (2) there exists a threshold in the arrival rate of passengers, at which the traffic rate starts decreasing, and (3) this jamming effect is due to the synchronization of elevators. Then we propose a dispatching control that prevents elevators from synchronizing. This control is applied to each elevator as an anxiliary working rule. We can remove the jamming effect and recover the transportation efficiency by the control.},
keywords={},
doi={},
ISSN={},
month={September},}

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TY - JOUR
TI - Emergent Synchronization in Multi-Elevator System and Dispatching Control
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1548
EP - 1533
AU - Takashi HIKIHARA
AU - Shinichi UESHIMA
PY - 1997
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E80-A
IS - 9
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - September 1997
AB - In this paper, we discuss an emergent behavior of a multi-elevator system. The system includes multiple elevators in an office building and the Poisson arrival of passengers as its input. Elevators move up and down to serve calls and carry passengers according to given working rules. The system is a representative discrete event dynamic system, and is a nonlinear complex system. When people leave a building at the closing time, the down-peak traffic of passengers occurs. We show numerically that (1) this causes a jamming effect, which reduces the transportation efficiency, (2) there exists a threshold in the arrival rate of passengers, at which the traffic rate starts decreasing, and (3) this jamming effect is due to the synchronization of elevators. Then we propose a dispatching control that prevents elevators from synchronizing. This control is applied to each elevator as an anxiliary working rule. We can remove the jamming effect and recover the transportation efficiency by the control.
ER -