Hitachi, Ltd.

Yoshinari Hori

Hiroki Yamamoto

Masaaki Mukaide

Daisuke Ito

Masaaki Iwasaki

Masayuki Sakata

Takuya Yoshida

Toshihiko Kashiyama

Tomotoshi Ishida

Taisuke Ueta

Katsunori Nishimura

Masahiro Komachiya

Yasuo Koseki

Akihiro Yamada

Akira Yamada

Ryuichi Kaji

Takeshi Terasaki

Hiroshi Yamauchi

Jinichiro Goto

Kouji Kageyama

Kou Takahashi

Yoshihide Kondo

A digital twin management system manages a virtual model that represents an actual physical system in a virtual space on a real-time basis. To generate an integrated virtual model by adding a second virtual model to a first virtual model, a processor of the digital twin system extracts multiple parts that can be used in common in the first virtual model and the second virtual model, generates multiple integrated virtual models that are candidates of an integrated virtual model by changing the extracted parts that can be used in common, calculates an evaluation of each of the generated integrated virtual models, and outputs configuration information regarding each of the integrated virtual model candidates and an evaluation of the integrated virtual model candidate in association with each other.

Digital twin management system and method

An object of the invention is to efficiently create a 3D model of a plant with attributes from a 3D model of a plant with no attributes. In order to solve the above problems, in the invention, a connection information conversion partconverts a connection relationship of parts extracted from a 3D model with no attributesinto connection information of a system diagram, an extraction information comparing partcompares the connection information with the connection relationship extracted from an attribute system diagram to create an conversion correspondence DB, and a 3D model with attributesis created based on the conversion correspondence DB from the 3D model with no attributes

3D model creation support system and 3D model creation support method

A plant data classification device according to one aspect of the invention includes: a data classification unit that classifies multidimensional operation data into categories; an evaluation index calculation unit that calculates an evaluation index of a category from a value of the operation data; a classification result evaluation unit that calculates a variation in the evaluation index for each category and determines whether the variation in the evaluation index is less than or equal to a reference value; and a parameter changing unit that changes, when it is determined that the variation in the evaluation index exceeds the reference value, a value of a parameter that defines a size of a category of the data classification unit in a direction of decreasing the size of the category.

Plant data classification device, plant data display processing device, and plant control system

Provided is a plant data display processing device including: a data classification unit that classifies operation data into categories according to similarity; an evaluation index calculation unit that calculates an evaluation index of a category from a value of the operation data; and a classification result display processing unit that calculates a representative value of the operation data for each of the categories from the operation data contained in each of the categories, maps identification information of each of the categories to two-dimensional space in accordance with similarity of a representative value of the operation data, and generates three-dimensional image data in which the identification information of each of the categories is shown on a plane formed of a first axis and a second axis, and the evaluation index of the category is shown on a third axis.

Plant data display processing device and plant control system

This manufacturing facility management optimization device: on the basis of an operation condition of a manufacturing facility, creates, in a simulated manner in time series, an operation state which includes a measurement value, product yield, and quantities of raw materials consumed, of the manufacturing facility; detects an anomaly from the created operation state; identifies maintenance which corresponds to the detected anomaly, corrects the operation condition on the basis of the identified maintenance, and creates a plurality of post-correction operation condition candidates; creates, in a simulated manner in time series, a plurality of post-correction operation state candidates on the basis of the plurality of post-correction operation condition candidates; on the basis of the product yield and the quantities of raw materials consumed in the plurality of pre- and post-correction operation state candidates, and a unit price, creates a management index for the operation state and each of the plurality of post-correction operation state candidates; and, from among the plurality of post-correction operation condition candidates, identifies the candidate which optimizes the management index.

Manufacturing facility management optimization device

A data classification apparatus for classifying plural input data into plural categories, in which the apparatus includes a prototype select unit for selecting the prototype of the category nearest to the input data that has been read, a prototype evaluation unit for evaluating whether the selected prototype is proper, a prototype addition unit for adding a prototype in the case where the selected prototype is not proper and an internal data correcting unit for correcting at least one of the prototype and an area determining parameter specifying the size of the category area for each category in the case where the selected prototype is proper. The size of the category area can be set for each category, and therefore, the data can be properly classified and the judgment accuracy is improved in an application to fault detection and fault diagnosis.

Data classification method and apparatus

A part of cell stack portions constituting a part of a fuel cell stack is used as a voltage detection portion, the size of a frequency component belonging to a predetermined specific frequency range is extracted from a voltage signal detected and the existence/absence of abnormality of a fuel cell system is diagnosed on the basis of the frequency component extracted.

Fuel cell system and diagnosis system for the fuel cell system

A high efficiency and economic refuse incineration power generation system capable of stable and continuous refuse incineration operation which can adapt to fluctuation in calorific values in the refuse incinerator has been provided, wherein the same system comprises the refuse incinerator having the heat exchanger through which the medium flows, the steam turbine which is coupled to the generator, and the refrigerator which supplies cooling water to the condenser, and wherein the medium discharged from the steam turbine is circulated to the boiler via the condenser where the medium is condensed to a condensate by enhanced cooling, a portion of the vapor generated in the refuse incinerator is branched in the upper stream of the steam turbine to be supplied to the refrigerator, and the working medium discharged from the refrigerator is caused to converge with the medium flow discharged from the condenser.

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Tokyo, Japan

Yoshinari Hori