Optimal scheduling model based on unmanned collector truck arrival time variation field bridge under balanced strategy

Abstract

The scheduling of container yard bridges has an important impact on the operational efficiency of the terminal. For the future automated terminal, to reasonably schedule the field bridges, under a given batch of tasks, considering the change of the arrival time of unmanned trucks and the balance of the workload of each field bridge, a balanced strategy is established based on the change of the arrival time of unmanned trucks. The optimal scheduling model of field bridges is given, and an example of field bridge scheduling is given through experiments. Provides a scientific solution for the future automated dock, yard, and bridge scheduling

Improved STN Models and Heuristic Rules for Cooperative Scheduling in Automated Container Terminals

“…The safe distance and conflict of YCs for device cooperative scheduling were solved in [22,23], but the path planning and collision avoidance of vehicles were ignored; the path planning and collision avoidance of AGVs for equipment collaborative scheduling were solved in [24][25][26][27], but the conflict problem of loading and unloading equipment in the container yard was not considered. In [28][29][30], the collisions of YCs were avoided by making them operate in fixed blocks.…”

“…And the cooperative processes of YCs and AGVs to complete tasks and their dynamic movements [20] can also be described by STN. In addition, it was pointed out that the pressure of the horizontal transport area and the waiting time between YCs and AGVs can be reduced by buffers [21,22]. Therefore, STN will be used to solve the CSPYA when buffers are configured on the seaside of the yard.…”