A preparation schedule creating method includes: an information acquiring step of acquiring production schedule information including a production sequence, a commenceable time point, and a production deadline time point, member information related to the members, arrangement means information related to a state of arrangement means attached to production equipment and a state of equipment detached arrangement means detached from the production equipment, work quantity information related to a work quantity of arrangement work of arranging members on the arrangement means, worker information related to the number of workers that performs the arrangement work; a usable arrangement means selecting step of selecting a usable arrangement means based on the production schedule information and the arrangement means information; and a preparation work schedule determining step of determining the selected usable arrangement means as the usable arrangement means for one model in the preparation work schedule.

A production schedule creating method includes: a schedule information acquiring step of acquiring production schedule information including a production sequence for producing a plurality of models of products, a commenceable time point, and a production deadline time point; a preparation time calculating step of calculating a preparation time taken for arrangement work of arranging members on arrangement means, for each of a plurality of models; a production time point calculating step of calculating a production commencing time point and a production end time point for each of the plurality of models; a schedule satisfaction determining step of determining whether or not a schedule satisfying condition is satisfied, for each of the plurality of models; and a sequence changing step of changing a sequence for producing an unsatisfied model that does not satisfy the schedule satisfying condition, in a case where the unsatisfied model is present.

An apparatus for assisting a setup work in a system having lines for producing types of products, each of the lines requesting the setup work for producing the product after switching of the type of product, includes a processor to calculate an earliest time when the setup work for each product in each line becomes executable based on the production-plan information, and when a difference between the earliest time when the setup work for a first product in a first line becomes executable and the earliest time when the setup work for a second product in a second line other than the first line becomes executable is equal or greater than a predetermined threshold value, determines that the setup work for the first product is executed before the setup work for the second product, and determines an execution order of the setup work for each product using a problem solver.

Methods and systems are provided for filtering lot schedules of a manufacturing facility. A first schedule is identified, in which the first schedule is a previously executed schedule. A processing device generates a pool of lots to be scheduled using information from the first schedule, in which the pool of lots is a subset of a plurality of lots associated with the first schedule. The processing device generates a second schedule using the pool of lots.

A computer-readable recording medium storing a program for causing a computer to execute: on a condition that each of objects is processed at any of a plurality of processing timings for which an order is determined, a processing specification is determined for each of the objects, a processing period in which processing is performed for each of the objects is determined, and the processing period includes one or more of the processing timings, calculating a probability obtained as a reciprocal of a number of the processing timings included in the processing period for each of the processing specifications of the objects, for each processing timing; calculating a sum of probabilities of the processing specifications for each processing timing; and calculating a cumulative sum of sums of the probabilities for the processing timing; and specifying the processing timings of the objects by using the cumulative sum.