公开(公告)号：US20240394237A1

公开(公告)日：2024-11-28

申请号：US18200860

申请日：2023-05-23

Applicant: HITACHI, Ltd.

Inventor： Tsubasa WATANABE

IPC: G06F16/22 ,  G06F16/28

Abstract: Example implementations as described herein are directed to generate a fault tree with a design document and minimized rules or database. The fault tree generation system may utilize assembly data and ladder programs as input and generates a fault tree by connecting an upper part of the fault tree generated from an assembly tree structure in the assembly data and a lower part of a fault tree from control logic in the ladder program. The fault tree is generated by connecting the lower part of the tree of the fault tree from the logic.

公开(公告)号：US20190120739A1

公开(公告)日：2019-04-25

申请号：US16094375

申请日：2016-04-18

Applicant: HITACHI, LTD.

Inventor： Tsutomu KONO ,  Ryotaro SHIMADA ,  Tsubasa WATANABE ,  Hiroki NAKATSUCHI

IPC: G01N11/00 ,  G01N33/44 ,  G01F1/696

Abstract: Provided is a flow analysis method capable of predicting a flow state of a composite resin material by taking into account a change in filler dispersion degree of the composite resin material. In a flow analysis method for a composite resin material having a filler and a resin, in a certain process of identifying a region in which the composite resin material flows and analyzing a flow, an exothermic reaction speed of the composite resin material in the region is computed using a filler dispersion degree Vwf in the composite resin material, a temperature and the filler dispersion degree Vwf of the composite resin material in the region is computed using the computed exothermic reaction speed, and an exothermic reaction speed in a process subsequent to a process to is computed using the computed filler dispersion degree Vwf.