Design and optimization of dispatching rules for elevator group control aiming at energy saving

In buildings with many elevators, elevator group control algorithm is used to efficiently dispatch the elevators to serve each hall call generated from different floors. Recent researches for energy saving of elevator system have attracted widespread interest, most of which achieve energy saving by minimizing the estimated energy consumption. This paper propose a rule-based algorithm for elevator group control, which focuses on design of dispatching rules for energy saving based on the inner mechanism of the elevator system. As the weights and other parameters for the rules matters a lot to the performance of the algorithm, coarse-to-fine searching strategy is used for optimization. It can overcome the combinatorial explosion of feasible set and the limitation of simulation platform. The proposed algorithm is tested on a very practical simulation platform. The result is reliable, and shows the efficiency of the algorithm on energy saving.