Patents by Inventor Tatsurou Yashiki

Tatsurou Yashiki 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: 11573541
    Abstract: An objective of the present invention is to provide a future state estimation method and future state estimation device with which, given that the space in which the estimation is carried out is finite, it is possible to rapidly estimate the states of a controlled object and the peripheral environment thereof in the form of probability density distribution for infinite future.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: February 7, 2023
    Assignee: Hitachi, Ltd.
    Inventors: Yuya Tokuda, Takuya Yoshida, Takayasu Kasahara, Tatsurou Yashiki
  • Publication number: 20230034599
    Abstract: A device for assisting in assigning setting values of a compressor operation controller for starting or stopping one or more compressors, collecting discharged air of the compressors in an air tank, and supplying the air tank as a compressed air source in a predetermined pressure range, includes: an input unit that receives piping network information which is an element of a pressure loss of a piping flow from the compressor to a pressure control position of the controller, compressor specifications which are an upper limit of a discharge pressure of the compressor and a number of compressor starts/stops, a supply flow rate condition which is time change data of a flow rate flowing from the pressure control position of the controller, and a supply pressure condition which is a lower limit of the supply pressure at the pressure control position of the controller.
    Type: Application
    Filed: December 18, 2020
    Publication date: February 2, 2023
    Inventors: Eunkyeong KIM, Tatsurou YASHIKI, Nobuhiro TOTTORI
  • Patent number: 11099585
    Abstract: Provided is a pipe network evaluation device that is capable of calculating a pressure loss in a pipe network and a consumption flow rate of compressed air in each terminal equipment without inputting layout information on devices, even in a case where there are some devices, the layout information about which is difficult to ascertain visually or obtain from a building drawing, or the like. Provided is a pipe network evaluation device that estimates the resistance of a pipe, the layout information about which is unknown, on the basis of pressure data on compressed air in an air tank, flow rate data on compressed air supplied from the air tank, layout unknown-part pipe outlet pressure data, for which layout information is unknown, and layout known-part pipe layout information, for which layout information is known.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: August 24, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Yaping Liu, Tatsurou Yashiki, Yukinori Katagiri
  • Patent number: 10885237
    Abstract: A network simulation device of the present invention: accepts an input of first plane information being positional information on a network projected onto a coordinate plane having any two dimensions out of three dimensions as coordinate axes; creates network model information which defines a coordinate value of the remaining one dimension as unknown based on the accepted first plane information; accepts selection of the element having the coordinate value defined as unknown by a user from the elements which appear in the first plane information; accepts an input of second plane information being positional information on the network projected onto a coordinate plane having any two dimensions including the remaining one dimension as coordinate axes; and determines a numerical value of the coordinate value defined as unknown of the selected element in the created network model information based on the accepted second plane information.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: January 5, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Yaping Liu, Tatsurou Yashiki, Hideharu Tanaka, Nobuhiro Tottori, Yoriyuki Shinada
  • Publication number: 20200393800
    Abstract: An objective of the present invention is to provide a future state estimation method and future state estimation device with which, given that the space in which the estimation is carried out is finite, it is possible to rapidly estimate the states of a controlled object and the peripheral environment thereof in the form of probability density distribution for infinite future.
    Type: Application
    Filed: February 4, 2019
    Publication date: December 17, 2020
    Inventors: Yuya TOKUDA, Takuya YOSHIDA, Takayasu KASAHARA, Tatsurou YASHIKI
  • Publication number: 20200278704
    Abstract: Provided is a pipe network evaluation device that is capable of calculating a pressure loss in a pipe network and a consumption flow rate of compressed air in each terminal equipment without inputting layout information on devices, even in a case where there are some devices, the layout information about which is difficult to ascertain visually or obtain from a building drawing, or the like. Provided is a pipe network evaluation device that estimates the resistance of a pipe, the layout information about which is unknown, on the basis of pressure data on compressed air in an air tank, flow rate data on compressed air supplied from the air tank, layout unknown-part pipe outlet pressure data, for which layout information is unknown, and layout known-part pipe layout information, for which layout information is known.
    Type: Application
    Filed: December 22, 2016
    Publication date: September 3, 2020
    Inventors: Yaping LIU, Tatsurou YASHIKI, Yukinori KATAGIRI
  • Patent number: 10648622
    Abstract: Provided is a pipeline network diagnosing device in which: a pressure measurement value is stored upon being acquired by a pressure gauge; a pipeline network is divided into sub-networks at the installation positions of an air compressor, a terminal device, and a pressure gauge installed partway along a pipeline channel, after which a sub-network model is generated; the flow of air within a sharing sub-network configured from two sub-networks that share the pressure gauge is calculated and stored, the pressure measurement value at an end part of the sharing sub-network serving as a calculation criterion; the pressure measurement value and a pressure calculation value at a shared pressure measurement point are compared to each other, the shared pressure measurement point being a pressure measurement point shared by the two sub-networks within the sharing sub-network; an assessment is made for each of the sub-networks with regard to whether air has leaked or a device has clogged; and any sub-networks in which a
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 12, 2020
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Tatsurou Yashiki, Yaping Liu, Yukinori Katagiri, Hisanori Matsumoto
  • Patent number: 10550837
    Abstract: A pneumatic system operation control device for variable control of the rotation speed of an electric motor for driving an air-compressor such that constantly supplied pressure to a terminal device is achieved in accordance with a discharge pressure measurement value of the air-compressor and a supply pressure measurement value to the terminal device. The control device: stores the discharge pressure measurement value and the supply pressure measurement value; and, upon receiving input of an air pipe network model composed of data for calculating a flow of air in an air pipe network, calculates a flow rate of air supplied to the terminal device and an update value of a control setting value, and updates the control setting value to be used for variable control on the basis of the update value.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: February 4, 2020
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Tatsurou Yashiki, Yaping Liu, Yukinori Katagiri
  • Publication number: 20190195722
    Abstract: The purpose of the present invention is to provide a device for detecting leaks in a piping network, said device being capable of performing calculations both at night and on work days without periodic inspections of an entire factory having to be performed on a non-work day, eliminating the need for leak location candidates to be designated, and detecting and outputting the position and amount of leaks of a compressed gas or liquid on the basis of desired time duration measurement values acquired during operation of a compressor.
    Type: Application
    Filed: August 7, 2017
    Publication date: June 27, 2019
    Inventors: Yaping LIU, Tatsurou YASHIKI
  • Publication number: 20180372086
    Abstract: A pneumatic system operation control device for variable control of the rotation speed of an electric motor for driving an air-compressor such that constantly supplied pressure to a terminal device is achieved in accordance with a discharge pressure measurement value of the air-compressor and a supply pressure measurement value to the terminal device. The control device: stores the discharge pressure measurement value and the supply pressure measurement value; and, upon receiving input of an air pipe network model composed of data for calculating a flow of air in an air pipe network, calculates a flow rate of air supplied to the terminal device and an update value of a control setting value, and updates the control setting value to be used for variable control on the basis of the update value.
    Type: Application
    Filed: July 15, 2016
    Publication date: December 27, 2018
    Inventors: Tatsurou YASHIKI, Yaping LIU, Yukinori KATAGIRI
  • Publication number: 20180051853
    Abstract: Provided is a pipeline network diagnosing device in which: a pressure measurement value is stored upon being acquired by a pressure gauge; a pipeline network is divided into sub-networks at the installation positions of an air compressor, a terminal device, and a pressure gauge installed partway along a pipeline channel, after which a sub-network model is generated; the flow of air within a sharing sub-network configured from two sub-networks that share the pressure gauge is calculated and stored, the pressure measurement value at an end part of the sharing sub-network serving as a calculation criterion; the pressure measurement value and a pressure calculation value at a shared pressure measurement point are compared to each other, the shared pressure measurement point being a pressure measurement point shared by the two sub-networks within the sharing sub-network; an assessment is made for each of the sub-networks with regard to whether air has leaked or a device has clogged; and any sub-networks in which a
    Type: Application
    Filed: January 22, 2016
    Publication date: February 22, 2018
    Inventors: Tatsurou YASHIKI, Yaping LIU, Yukinori KATAGIRI, Hisanori MATSUMOTO
  • Publication number: 20180039719
    Abstract: A network simulation device of the present invention: accepts an input of first plane information being positional information on a network projected onto a coordinate plane having any two dimensions out of three dimensions as coordinate axes; creates network model information which defines a coordinate value of the remaining one dimension as unknown based on the accepted first plane information; accepts selection of the element having the coordinate value defined as unknown by a user from the elements which appear in the first plane information; accepts an input of second plane information being positional information on the network projected onto a coordinate plane having any two dimensions including the remaining one dimension as coordinate axes; and determines a numerical value of the coordinate value defined as unknown of the selected element in the created network model information based on the accepted second plane information.
    Type: Application
    Filed: January 19, 2016
    Publication date: February 8, 2018
    Inventors: Yaping LIU, Tatsurou YASHIKI, Hideharu TANAKA, Nobuhiro TOTTORI, Yoriyuki SHINADA
  • Patent number: 9359953
    Abstract: Disclosed is a solar assisted combined cycle power plant having a compressor that pressurizes combustion air, a combustor that mixes and burns the combustion air and gas turbine fuel to generate a high-temperature combustion gas, a gas turbine that drives the compressor by using the combustion gas, an exhaust heat recovery steam generator that obtains steam from thermal energy of a gas exhausted from the gas turbine, and a steam turbine that is driven by using the steam obtained by the exhaust heat recovery steam generator. The solar assisted combined cycle power plant includes a solar collector to turn supplied water to warm water; a heat accumulator that stores pressurized hot water from the solar collector and the exhaust heat recovery steam generator; and a spray device that handles the pressurized hot water as spray water and sprays the spray water onto the air to be taken into the compressor.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: June 7, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Yasuhiro Yoshida, Yukinori Katagiri, Tatsurou Yashiki, Takuya Yoshida, Kazuo Takahashi, Naohiro Kusumi, Takaaki Sekiai
  • Publication number: 20130192193
    Abstract: Disclosed is a solar assisted combined cycle power plant having a compressor that pressurizes combustion air, a combustor that mixes and burns the combustion air and gas turbine fuel to generate a high-temperature combustion gas, a gas turbine that drives the compressor by using the combustion gas, an exhaust heat recovery steam generator that obtains steam from thermal energy of a gas exhausted from the gas turbine, and a steam turbine that is driven by using the steam obtained by the exhaust heat recovery steam generator. The solar assisted combined cycle power plant includes a solar collector to turn supplied water to warm water; a heat accumulator that stores pressurized hot water from the solar collector and the exhaust heat recovery steam generator; and a spray device that handles the pressurized hot water as spray water and sprays the spray water onto the air to be taken into the compressor.
    Type: Application
    Filed: September 30, 2010
    Publication date: August 1, 2013
    Applicant: Hitachi ,Ltd.
    Inventors: Yasuhiro Yoshida, Yukinori Katagiri, Tatsurou Yashiki, Takuya Yoshida, Kazuo Takahashi, Naohiro Kusumi, Takaaki Sekiai