Toshiba Mitsubishi-electric Industrial Systems Corporation

Haruki Inami

Tomoyuki Tezuka

Naoki Shimoda

Naohiro Kubo

Mirei Kihara

Wataru Kameyama

Mutsumi Suganuma

A manufacturing process monitoring apparatus capable of determining a manufacturing process is anomaly, without requiring any threshold value for determining the as anomaly is provided. The manufacturing process monitoring apparatus includes a data conversion unit configured to convert process data of a manufacturing facility, a feature value analysis unit configured to analyze the converted data based on information on feature values, a data restoration unit configured to restore data for each of a plurality of categories based on the information on the feature values and information on the analyzed result, a similarity calculation unit configured to calculate a similarity for each of the plurality of categories based on the data used when being analyzed and the restored data, a category determination unit configured to determine a category of the data based on the similarity for each of the plurality of categories, a category classification unit configured to classify the category to which the process data belongs, and a process state diagnostic unit configured to diagnose a state of the manufacturing process based on a result of comparison between the determined category and the classified category.

Manufacturing process monitoring apparatus

A temperature calculation method includes: dividing a cross section perpendicular to a longitudinal direction of a steel plate to be hot-rolled into a plurality of rectangular elements; and calculating a temperature of each of the rectangular elements using a finite difference method. A first regionthat includes an edge part of the cross section is divided such that a plurality of the rectangular elements are lined up in a plate-thickness direction and such that a plurality of the rectangular elements are lined up in a plate-width direction. A second regionthat includes a center of the cross section and is wider than the first regionis divided such that a plurality of the rectangular elements are lined up in the plate-thickness direction but the second regionis not divided in the plate-width direction.

Temperature calculation method, temperature calculation apparatus, heating control method, and heating control apparatus

A rolling system includes an induction heater, temperature detectors, a finishing mill, and a power setting calculation device. The power setting calculation device generates a temperature distribution pattern in a plate thickness direction of a steel material at a temperature control position in an upstream side. The power setting calculation device calculates a volume average temperature of the steel material at a temperature control position in a downstream side, at a time when the steel material moves to the temperature control position in the downstream side from the temperature control position in the upstream side, based on the generated temperature distribution pattern. Then, the power setting calculation device calculates an electric power necessary for the induction heater so that the calculated volume average temperature follows a target temperature of the steel material at the temperature control position in the downstream side.

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Tokyo, Japan

Haruki Inami