Abstract: A production system for producing products from raw materials by a production process with several steps has a number of production facilities that perform the steps and a control device. The control device determines a control target value by referring to information about group combinations specified in accordance with the relative merits of the manufacturing condition routes followed by respective lots during the production process. The routes are respectively set for a number of groups that are classified on the basis of raw material properties formed of a combination of property items of one or more types of raw materials. The relative merits of the routes are determined on the basis of quality items of the lots, classified for inter-step combinations of groups, which are classified on the basis of manufacturing conditions at the steps.

Abstract: A production system for producing products from raw materials by a production process with several steps has a number of production facilities that perform the steps and a control device. The control device determines a control target value by referring to information about group combinations specified in accordance with the relative merits of the manufacturing condition routes followed by respective lots during the production process. The relative merits are determined on the basis of quality items of the lots, classified for inter-step combinations of groups, which are classified on the basis of manufacturing conditions at the steps.

Abstract: A production system for producing products from raw materials by a production process with several steps has a number of production facilities that perform the steps and a control device. The control device determines a control target value by referring to information about group combinations specified in accordance with the relative merits of the manufacturing condition routes followed by respective lots during the production process. The relative merits are determined on the basis of quality items of the lots, classified for inter-step combinations of groups, which are classified on the basis of manufacturing conditions at the steps.

Abstract: A production system for producing products from raw materials by a production process with several steps has a number of production facilities that perform the steps and a control device. The control device determines a control target value by referring to information about group combinations specified in accordance with the relative merits of the manufacturing condition routes followed by respective lots during the production process. The routes are respectively set for a number of groups that are classified on the basis of raw material properties formed of a combination of property items of one or more types of raw materials. The relative merits of the routes are determined on the basis of quality items of the lots, classified for inter-step combinations of groups, which are classified on the basis of manufacturing conditions at the steps.

Abstract: To provide a manufacturing process analysis method for specifying a hindering factor that causes a variation in product performance and for stabilizing product performance.

Abstract: A production process analysis method for stabilizing the quality of the products or services. A production process analysis method includes: a step for identifying a good lot included in a group determined to be the most excellent with respect to each of a plurality of states constituting a production process; a step for classifying, in the case where at least one good lot is not shared among the plurality of states, the plurality of states into an arbitrarily selected selection state and other non-selection states, and determining again a highest-ranking group in the non-selection state that includes the good lot in the selection state as the most excellent group; and a step for identifying factors that characterize the group determined as the most excellent.

Abstract: A production process analysis method for stabilizing the quality of the products or services. A production process analysis method includes: a step for identifying a good lot included in a group determined to be the most excellent with respect to each of a plurality of states constituting a production process; a step for classifying, in the case where at least one good lot is not shared among the plurality of states, the plurality of states into an arbitrarily selected selection state and other non-selection states, and determining again a highest-ranking group in the non-selection state that includes the good lot in the selection state as the most excellent group; and a step for identifying factors that characterize the group determined as the most excellent.

Abstract: [Problem] To provide a manufacturing process analysis method for specifying a hindering factor that causes a variation in product performance and for stabilizing product performance.