Twin ASCs Priority Rules and Avoidance Plans Simulation in Automated Container Terminal
JING Zhenwen
HAN Xiaolong
Abstract：In order to reduce the delay of makespan caused by the interference between the twin ASCs in automated container terminal, nine priority rules and two avoidance plans are proposed: direct avoidance and dynamic exchange area.To choose the best priority rules and avoidance plans, on the basis of relevant research review and repeated experiments, the total number of tasks is set to 100, and the experiments will be divided into five levels according to the proportion of seaside tasks ( 30%, 40%, 50%, 60%, and 70%) .The simulation results show that the shortest makespan in direct avoidance will be at least 30 sec-onds shorter than that for dynamic exchange area in 80%of the experiments;rules LonOri ( giving priority to the ASC with the longest travel time to the origin of the next request, upon completion of the current re-quest) and LonFin ( giving priority to the ASC with the longest time to finish the current request) can get the shortest makespan in at least 60%of the experiments.The results show that the rules LonOri and Lon-Fin and direct avoidance can effectively reduce the makespan.
Keywords：twin automated storage cranes ( twin ASCs )simulationpriority assignmentdynamic ex-change area
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 128-133 )