Algorithms and implementation of the control program for the multi-lifting operation

High-rise buildings became a commonplace phenomenon of today. Vertical transport used in them is a problem requiring a systematic and ordered approach. It is not a rare case when the vertical direction of transport movement becomes a very complex problem in certain tall structures, especially when different people appear at the same transport doors almost simultaneously. To resolve such situations, it is a running practice to set up a control system for a group of elevators. The system is used to control several coordinated elevators in the building to achieve a more efficient transfer of passengers. Predicting more accurately the movement of elevators is of major importance for planning and controlling the control systems of elevator groups. The article highlights a review of the control algorithms for the multi-lifting operation, where the advantages and disadvantages of non-iterative and iterative control algorithms are considered. It is shown that iterative algorithms are more optimal from the point of view of increasing the performance of elevators in multi-lifting operation. The main principles of the multi-lifting algorithm, based on the redistribution of elevator calls, are given. A computer program is presented that implements an iterative algorithm for multi-lifting control, which can be used to simulate multi-lifting operation in various conditions.