SCHEDULE PARAMETER CORRECTION METHOD AND SCHEDULE CORRECTION DEVICE, SCHEDULE PREPARATION METHOD AND SCHEDULE PREPARATION DEVICE AND STEEL MATERIAL MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a scheduling parameter correction method capable of efficiently and properly correcting scheduling parameters according to the changes in facilities due to deterioration with time or the like in a manufacturing process (i.e. steel making process) including plural steps and at least one or more bottleneck processes.

SOLUTION: The scheduling parameter correction method comprises the steps of: obtaining average value and standard deviation of processing time and conveyance time based on previous operation track data in steel making process; presuming a probability density distribution of time from the calculated average value of time and the standard deviation; calculating expected cost using the probability density distribution; setting parameter correction values so as to minimize the expected cost; and correcting the scheduling parameters using the set parameter correction values.

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