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journal contribution
posted on 2019-06-14, 08:13 authored by Guodong Zhao, Jiyin LiuJiyin Liu, Yun DongThis paper studies a double-load crane scheduling problem (DLCSP) in steel slab
yards. A slab yard stores slabs in stacks. To prepare for use in production, some slabs
need to be moved from one place to another. These movement tasks are performed by
a double-load crane which can hold up to two slabs simultaneously. Given a set of tasks
and possibly precedence relationship among them, the scheduling problem is to allocate
the tasks to double-load operations and determine the schedule for the crane to perform
the tasks so as to minimize the makespan. The problem is first formulated as a mixed
integer linear programming (MILP) model with variables representing the order of tasks.
Based on properties of the problem, it is then reformulated from a crane operation
perspective. Computational experiments are carried out on practical data collected from
a steel company. The results show that both models can solve practical sized problems
optimally, with the second model being more efficient.
Funding
National Key Research and Development Program of China (2016YFB0901900), the Fund for Innovative Research Groups of the National Natural Science Foundation of China (71621061), the Major International Joint Research Project of the National Natural Science Foundation of China (71520107004), General fund of the National Natural Science Foundation of China (71472081), and the 111 Project (B16009).
History
School
- Business and Economics
Department
- Business