Patents by Inventor Shizuka IKAWA

Shizuka IKAWA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11914348
    Abstract: A plant operating condition setting support system for supporting the setting of an operating condition of a plant that performs a process formed by devices includes: control devices that subject controlled devices to feedback control respectively; and an operating condition setting support device that provides integrated support for the setting of the control devices, which perform feedback control tasks respectively and independently. The operating condition setting support device includes: a measured value multiple acquisition unit that acquires measured values indicating states of the controlled devices, respectively; and a control device adjustment parameter determination unit that determines, based on the measured values acquired, control device adjustment parameters used by each of the control devices to determine manipulation variables for control that should be input to the controlled devices, according to a policy learned by deep reinforcement learning.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: February 27, 2024
    Assignees: CHIYODA CORPORATION, GRIDINC
    Inventors: Takehito Yasui, Shizuka Ikawa, Akifumi Toki, Masaru Sogabe, Yusuke Suwa
  • Patent number: 11665193
    Abstract: A plant management method includes: acquiring correlation information indicating a correlation between a component subjected to a cyberattack and a component to be possibly affected by the cyberattack when a plant including a plurality of components is subjected to the cyberattack; and zoning the plurality of components on the basis of the correlation information.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: May 30, 2023
    Assignee: CHIYODA CORPORATION
    Inventors: Shizuka Ikawa, Takehito Yasui, Kazuya Furuichi, Yuki Hamada
  • Patent number: 11531326
    Abstract: A plant management system includes: a control device; and a management device. The control device includes: a manipulation parameter setting unit that sets values of manipulation parameters; a state parameter acquisition unit that acquires values of state parameters indicating an operating condition of the plant; and a transmitter that transmits these values to the management device. The management device includes: an acquisition unit that acquires these values; a database that stores set values of manipulation parameters and actually measured values or predicted values of state parameters when the plant is operated based on the set values, corresponding to each other; and a determination unit that determines a set value of a manipulation parameter capable of improving a value of a predetermined state parameter of the plant by referring to these values and the database.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: December 20, 2022
    Assignee: CHIYODA CORPORATION
    Inventors: Kazuya Furuichi, Shizuka Ikawa
  • Publication number: 20220221850
    Abstract: A plant management method includes: acquiring correlation information indicating a correlation between a component subjected to a cyberattack and a component to be possibly affected by the cyberattack when a plant including a plurality of components is subjected to the cyberattack; and zoning the plurality of components on the basis of the correlation information.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Inventors: Shizuka IKAWA, Takehito YASUI, Kazuya FURUICHI, Yuki HAMADA
  • Patent number: 11301976
    Abstract: An inspection support system comprising: determination devices that determine pass or fail based on a result of non-destructive inspection of the object; and a learning device that learns a determination algorithm used to determine pass or fail based on information collected from the determination devices. The determination device transmits an ultimate determination result yielded by an inspection person who has checked a determination result to the learning device along with the corresponding result of non-destructive inspection of the object. The learning device includes: a determination result reception unit that receives the ultimate determination result and the result of non-destructive inspection of the inspection object; a learning unit that learns the determination algorithm based on received information; and a provision unit that provides the learned determination algorithm to the determination devices.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: April 12, 2022
    Assignee: CHIYODA CORPORATION
    Inventors: Kazuya Furuichi, Akihito Ikarashi, Shizuka Ikawa, Kenichi Mimura
  • Publication number: 20210088986
    Abstract: An operation condition setting support device supporting setting of an operation condition of a plant includes a state value acquirer acquiring state values representing states of controlled devices during operation of the controlled devices, a predictor estimating predicted values for the respective state values at a predetermined future time point based on the respective state values acquired by the state value acquirer, and a notifier, in a case where an index calculated based on a difference between each of the state values at the predetermined time point acquired by the state value acquirer and each of the predicted values at the predetermined time point or a later time point than the predetermined time point estimated by the predictor or a change ratio of the difference satisfies a predetermined condition, providing notification of the case.
    Type: Application
    Filed: December 7, 2020
    Publication date: March 25, 2021
    Inventors: Kazuya FURUICHI, Eisuke OKI, Shizuka IKAWA
  • Publication number: 20210055712
    Abstract: A plant operating condition setting support system for supporting the setting of an operating condition of a plant that performs a process formed by devices includes: control devices that subject controlled devices to feedback control respectively; and an operating condition setting support device that provides integrated support for the setting of the control devices, which perform feedback control tasks respectively and independently. The operating condition setting support device includes: a measured value multiple acquisition unit that acquires measured values indicating states of the controlled devices, respectively; and a control device adjustment parameter determination unit that determines, based on the measured values acquired, control device adjustment parameters used by each of the control devices to determine manipulation variables for control that should be input to the controlled devices, according to a policy learned by deep reinforcement learning.
    Type: Application
    Filed: November 4, 2020
    Publication date: February 25, 2021
    Inventors: Takehito YASUI, Shizuka IKAWA, Akifumi TOKI, Masaru SOGABE, Yusuke SUWA
  • Publication number: 20200234425
    Abstract: An inspection support system comprising: determination devices that determine pass or fail based on a result of non-destructive inspection of the object; and a learning device that learns a determination algorithm used to determine pass or fail based on information collected from the determination devices. The determination device transmits an ultimate determination result yielded by an inspection person who has checked a determination result to the learning device along with the corresponding result of non-destructive inspection of the object. The learning device includes: a determination result reception unit that receives the ultimate determination result and the result of non-destructive inspection of the inspection object; a learning unit that learns the determination algorithm based on received information; and a provision unit that provides the learned determination algorithm to the determination devices.
    Type: Application
    Filed: March 20, 2020
    Publication date: July 23, 2020
    Inventors: Kazuya FURUICHI, Akihito IKARASHI, Shizuka IKAWA, Kenichi MIMURA
  • Publication number: 20200218244
    Abstract: A plant management system includes: a control device; and a management device. The control device includes: a manipulation parameter setting unit that sets values of manipulation parameters; a state parameter acquisition unit that acquires values of state parameters indicating an operating condition of the plant; and a transmitter that transmits these values to the management device. The management device includes: an acquisition unit that acquires these values; a database that stores set values of manipulation parameters and actually measured values or predicted values of state parameters when the plant is operated based on the set values, corresponding to each other; and a determination unit that determines a set value of a manipulation parameter capable of improving a value of a predetermined state parameter of the plant by referring to these values and the database.
    Type: Application
    Filed: March 20, 2020
    Publication date: July 9, 2020
    Inventors: Kazuya FURUICHI, Shizuka IKAWA