Raw material ship operation scheduling system in steelworks

We adopt the simulated annealing method for dealing with raw material transportation ship operation scheduling. The scheduling algorithm should satisfy the proper stock for each raw material level by satisfying the restriction conditions of the transportation ship and the harbour equipment. The developed scheduling algorithm consists mainly of two parts: 1) the operation of the ship is simulated by decision variables, such as the order of the operation of ship and the type of raw material on-board, for calculating the amount of each raw material unloaded and the unloading time; and 2) the simulation calculates the change in the stock level of each raw material type based on the simulation result by which the first simulation is operated. The evaluation function, comprising the operating cost of the ship and the propriety of the stock level, can be calculated by using these two simulation results