Patents by Inventor Azuma Okuno

Azuma Okuno 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).

  • Publication number: 20220299007
    Abstract: Even when a low stiffness blade is adopted, collision between the blade and a tower is avoided when a wind power generation apparatus is to be stopped, while an increase in the time required for the stop is suppressed. A rotor including a blade, a nacelle that supports the rotor, a tower that supports the nacelle, a pitch angle control mechanism that controls a pitch angle of the blade, and a controller that outputs a target value of the pitch angle to the pitch angle control mechanism are included. When the wind power generation apparatus is to be stopped, the controller determines the target value of the pitch angle in a feather operation of the blade such that the blade does not greatly bend toward the tower in an azimuth angle range in which the blade passes through the tower.
    Type: Application
    Filed: July 17, 2020
    Publication date: September 22, 2022
    Inventors: Nobuo NAMURA, Azuma OKUNO
  • Patent number: 10540476
    Abstract: The present disclosure discloses a computer-implemented method for simplifying analysis of a computer-aided model. The method comprising acts of selecting at least one evaluation point in a standard computer-aided model, analyzing the standard computer-aided model by simplifying each of a plurality of simplification points for the selected at least one evaluation point. Further the computer-implemented method comprises acts of building a response surface using relationship between simplification parameters and evaluation parameter based on analysis of the standard computer-aided model and indicating effect of simplification of at least one simplification point in the computer-aided model by comparing calculated evaluation parameter of the computer-aided model with a threshold evaluation parameter, wherein, the calculated evaluation parameter is derived using the response surface.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: January 21, 2020
    Assignee: HITACHI, LTD.
    Inventor: Azuma Okuno
  • Publication number: 20170140091
    Abstract: The present disclosure discloses a computer-implemented method for simplifying analysis of a computer-aided model. The method comprising acts of selecting at least one evaluation point in a standard computer-aided model, analyzing the standard computer-aided model by simplifying each of a plurality of simplification points for the selected at least one evaluation point. Further the computer-implemented method comprises acts of building a response surface using relationship between simplification parameters and evaluation parameter based on analysis of the standard computer-aided model and indicating effect of simplification of at least one simplification point in the computer-aided model by comparing calculated evaluation parameter of the computer-aided model with a threshold evaluation parameter, wherein, the calculated evaluation parameter is derived using the response surface.
    Type: Application
    Filed: November 9, 2016
    Publication date: May 18, 2017
    Applicant: HITACHI, LTD.
    Inventor: Azuma OKUNO
  • Publication number: 20150193557
    Abstract: The present invention provides a design support system for easily identifying extent of impact of design change while saving the labor involved in working on the design change. The system includes: a simulation execution unit that executes a simulation by executing a program on a server using predetermined parameters regarding the design of an object; an extent-of-impact extraction unit that extracts extent of impact that parts are subject to due to design change, from an analysis result obtained through execution of the simulation by the simulation execution unit; and an output unit that outputs the extent of impact extracted by the extent-of-impact extraction unit.
    Type: Application
    Filed: September 24, 2012
    Publication date: July 9, 2015
    Inventors: Azuma Okuno, Masayuki Hariya, Ichiro Nishigaki, Ichiro Kataoka