Subaru Corporation

Jfe Steel Corporation

Sony Mobile Communications Inc.

Kazuaki Hirakawa

Takashi Yamauchi

Kousaburou Akiba

Yu Shigeta

Masahiro Shimase

Megumi Hiraki

Hirohide Uehara

Isao Shimoda

Koichiro Hirata

An operation method of ladle refining treatment by which ladle refining treatment of a molten steel is performed while continuously measuring a molten steel temperature during operation of the ladle refining treatment of the molten steel is provided. The operation method includes setting a time earlier than a scheduled ending time of the ladle refining treatment in a continuous measurement period of the molten steel temperature as a determination timing, and estimating the molten steel temperature at the scheduled ending time on the basis of a change with time of the molten steel temperature in continuous measured data of the molten steel temperature from a start of continuous measurement of the molten steel temperature to the determination timing.

Operation method of ladle refining treatment

There is provided a driving apparatus including: a rotation unit configured to be rotated about a center shaft by driving of a motor; a rotation angle acquisition unit configured to acquire information of a rotation angle of the rotation unit, as information proportional to the rotation angle; and a control unit configured to control the driving of the motor on the basis of the information of the rotation angle acquired by the rotation angle acquisition unit.

Driving apparatus and driving control method

A joint analyzing method includes: performing a data measurement; performing a detailed analysis; performing a simplified analysis; performing a first repetition analysis in which the detailed analysis is repeated while modifying a first analysis model in which geometry of a joint surrounding region is modeled and an analysis technique in the detailed analysis, until a data measurement result and a detailed analysis result are brought into agreement; and performing a second repetition analysis in which the simplified analysis that takes into consideration an initial internal load of at least one junction in a load non-applied state obtained in the first repetition analysis is repeated while modifying a second analysis model rougher in element division of the geometry than the first analysis model and an analysis technique in the simplified analysis, until the data measurement result and a simplified analysis result are brought into agreement.

Joint analyzing method, product designing method, and joint analyzing system

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Tokyo, Japan

Kazuaki Hirakawa