Journal Name:
- International Journal of Innovation and Applied Studies
Author Name | University of Author |
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Abstract (2. Language):
Elevators are considered a necessity in buildings with multiple floors. In tall buildings there is a need for
efficient control of the elevator system in order to obtain satisfactory service levels. To achieve an efficient elevator
control strategy a variety of diverse and sometimes conflicting constraints has to be resolved. To investigate the
effectiveness of a vertical transportation system, we have developed a simulation model to analyze the call strategy of a
multi-car elevator system. In this paper the main steps in the methodology for modelling elevator performance and
passenger traffic in a public building are explained. Elevator dynamics and control, call allocation and passenger traffic
modelling are described resulting in a Witness model. Witness simulation software has been used as a test-bed for model
building, simulation and experimentation. Three different strategies were devised and experimented on the model and
the results were compared to find the best average waiting time. Results indicate that the average waiting time of
passengers was slightly improved when using the shortest distance strategy. In addition to passenger waiting time it has
been realised that elevator performance depends on the passenger traffic patterns and, during heavy traffic, service level
is greatly affected by the call allocation algorithm. The research concludes with the need to carefully select the data set as
the basis for simulation comparisons.
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FULL TEXT (PDF):
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20-27