Patents by Inventor Yukihito Okuda

Yukihito Okuda 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: 11753961
    Abstract: A startup control device for adjusting a startup schedule during startup of a power generation plant, the device includes: a determining unit which determines, on the basis of a predicted value of a physical quantity corresponding to the elapsed time from startup when the power generation plant has started up on the basis of a prescribed optimal startup schedule, and an observed value of the physical quantity acquired during the startup of the power generation plant, whether the observed value will exceed the predicted value. The device also includes a speed adjusting unit which, if the determining unit determines that the observed value will exceed the predicted value, issues an instruction to decelerate the speed of progress of elapsed time from the startup in the optimal startup schedule; and a startup timer which progresses the elapsed time from the startup at a speed based on the instruction.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: September 12, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takaharu Hiroe, Kazunari Ide, Ryo Sase, Yoshito Nagahama, Hiroshi Ito, Yukihito Okuda, Nobuhiro Osaki, Shoichiro Hosomi
  • Publication number: 20230126831
    Abstract: A control parameter optimization device is provided with: a plant model configured to calculate a control command value by a control device and a process quantity of a plant; a control parameter updating unit configured to update a control parameter used for calculating the control command value in the plant model, on the basis of an objective function calculated based on a calculation result of the process quantity in the plant model; and a structural model configured to calculate a clearance between a stationary member and a rotating member in the rotating machine, on the basis of the process quantity from the plant model. The control parameter updating unit is configured to search for an optimal control parameter within a range where the clearance calculated by the structural model satisfies a constraint condition.
    Type: Application
    Filed: February 18, 2021
    Publication date: April 27, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshito Nagahama, Takaharu Hiroe, Kazunari Ide, Ryo Sase, Hiroshi Ito, Norikazu Tezuka, Yukihito Okuda, Nobuhiro Osaki, Shota Mochizuki, Shoichiro Hosomi
  • Publication number: 20220316363
    Abstract: Provided is a startup control device for adjusting a startup schedule during startup of a power generation plant. This startup control device is provided with: a determining unit which, for a prescribed physical quantity that restricts the startup of the power generation plant, determines, on the basis of a predicted value of a physical quantity corresponding to the elapsed time from startup when the power generation plant has started up on the basis of a prescribed optimal startup schedule, and an observed value of the physical quantity acquired during the startup of the power generation plant, whether the observed value will exceed the predicted value; a speed adjusting unit which, if the determining unit determines that the observed value will exceed the predicted value, issues an instruction to decelerate the speed of progress of elapsed time from the startup in the optimal startup schedule; and a startup timer which progresses the elapsed time from the startup at a speed based on the instruction.
    Type: Application
    Filed: July 22, 2020
    Publication date: October 6, 2022
    Inventors: Takaharu HIROE, Kazunari IDE, Ryo SASE, Yoshito NAGAHAMA, Hiroshi ITO, Yukihito OKUDA, Nobuhiro OSAKI, Shoichiro HOSOMI
  • Patent number: 10626844
    Abstract: The present invention provides a hydraulic drive train including a check valve provided in a return oil passage disposed between a branching position of a first branching oil passage and a branching position of a second branching oil passage, wherein at the time of starting of startup of the hydraulic drive train, the switching valve is closed, the opening degree of the flow rate adjusting valve is set to the initial opening degree, the on-off valve is opened, the boost pump is driven by the drive motor, and the hydraulic oil is supplied to the hydraulic pump, thereby assisting the rotational speed of the vanes by the hydraulic oil.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: April 21, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Shin Asano, Kensuke Futahashi, Yoshitomo Noda, Kyota Tokuyama, Sho Onodera, Yukihito Okuda
  • Publication number: 20190063397
    Abstract: The present invention provides a hydraulic drive train including a check valve provided in a return oil passage disposed between a branching position of a first branching oil passage and a branching position of a second branching oil passage, wherein at the time of starting of startup of the hydraulic drive train, the switching valve is closed, the opening degree of the flow rate adjusting valve is set to the initial opening degree, the on-off valve is opened, the boost pump is driven by the drive motor, and the hydraulic oil is supplied to the hydraulic pump, thereby assisting the rotational speed of the vanes by the hydraulic oil.
    Type: Application
    Filed: August 24, 2018
    Publication date: February 28, 2019
    Inventors: Shin ASANO, Kensuke FUTAHASHI, Yoshitomo NODA, Kyota TOKUYAMA, Sho ONODERA, Yukihito OKUDA
  • Patent number: 6414452
    Abstract: A waveform control unit of a vibrating table comprises: an off-line compensation wave generator which generates an off-line compensation wave on the basis of the inverse characteristic of the vibrating table determined before performing an excitation and a target wave; and an on-line compensation wave generator which generates an on-line compensation wave on the basis of the inverse characteristic of the vibrating table during the excitation determined on the basis of the data of an excitation wave and a reproduced wave during the excitation and the target wave, and it switches the excitation wave to a mixed compensation wave based on the on-line compensation wave from the off-line compensation wave, during the excitation.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: July 2, 2002
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yukihito Okuda, Akihiro Maekawa, Takaharu Hiroe, Makoto Sakuno