Patents by Inventor Atsushi Hirata
Atsushi Hirata 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).
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Publication number: 20240411566Abstract: The information processing apparatus and method are designed to: extract features about requirements including at least a data structure of data to be handled by the target system to be created, a method for analyzing the data, and a method for searching the data; extracts catalogs which satisfy the features of the extracted requirements from among a plurality of kinds of catalogs which are prepared in advance and define data processing flows; extract respective cloud services suited for the requested requirements with respect to each service constitute element of the extracted catalogs; generate one or a plurality of proposed system configurations obtained by combining the extracted cloud services in accordance with the extracted catalogs; and present each of the generated proposed system configurations.Type: ApplicationFiled: March 8, 2024Publication date: December 12, 2024Inventors: Yuji KOSEKI, Atsushi HIRATA, Eri KUBO
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Publication number: 20240367712Abstract: A steering reaction force control device, a steering reaction force control method, and a steering reaction force control system according to the present invention determine an amount of torque of a steering reaction force imparted by the reaction force actuator and a direction of torque for returning the steering operation input member to a neutral position from a physical quantity related to a vehicle speed of the vehicle and a physical quantity related to the operation information of the steering operation input member, and output a control signal based on the amount of torque and the direction of torque to the reaction force actuator. As a result, it is possible to prevent the hunting of the operating position of the steering operation input member when the steering operation input member is retained in a given steering position.Type: ApplicationFiled: July 8, 2022Publication date: November 7, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Atsushi HIRATA, Yasuhito NAKAKUKI
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Publication number: 20240308579Abstract: A steer-by-wire control device according to the present invention includes a control device that controls a first motor that operates a steering wheel of a vehicle and a second motor that controls steering operation of a wheel. Before making a transition to an automatic driving mode of the vehicle, the control device applies input torque to the steering wheel by the first motor in a forward rotation direction and a backward rotation direction of rotation directions of the first motor, acquires behavior information of the steering wheel obtained by application of the input torque, and determines whether or not to estimate a control parameter of the steering wheel based on the behavior information. The behavior information includes at least one of a value of a rotation angle of a steering wheel and a value obtained by time-differentiating a rotation angle.Type: ApplicationFiled: June 1, 2022Publication date: September 19, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Shunsuke ARITOMI, Tadaharu YOKOTA, Yasuhito NAKAKUKI, Atsushi HIRATA, Takahiro ITO, Kenta MAEDA
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Patent number: 12091101Abstract: A steering input device for steer-by-wire, according to the present invention, includes a steering shaft that is mechanically separated from a steered wheel, a reaction force motor that applies a steering load to the steering shaft, a lock mechanism that regulates rotation of the steering shaft, a steering amount sensor that detects an operation amount of the steering shaft and outputs an operation amount signal, and a controller. The controller increases the reaction torque generated by the reaction force motor after the starting switch of the vehicle is switched to an OFF state, and after the reaction torque is increased, switches the lock mechanism to a locked state. Thereby, it is possible to suppress an uncomfortable sensation of the driver in steering, while suppressing occurrence of a phase shift between the steering wheel and the steered wheel when the starting switch of the vehicle is switched to the OFF state.Type: GrantFiled: February 3, 2021Date of Patent: September 17, 2024Assignee: HITACHI ASTEMO, LTD.Inventors: Yasuhito Nakakuki, Makoto Kimura, Huajun Liu, Atsushi Hirata
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Publication number: 20240262417Abstract: A control device method for steer by wire, the control device including a first motor controlling steering via an FBA and a second motor controlling a steering angle of a wheel via an RWA and being capable of bidirectionally controlling the first motor and the second motor includes a base SAT that obtains a reference torque based on an angle of the first motor and a vehicle speed, and a rack force estimation portion that estimates rack force as a reaction force based on a steering angle of a wheel and an RWA. A first control mode controls a reference torque of the first motor and a second control mode controls the first motor based on a reaction force estimation by the rack force estimation portion, the first and second control modes are switched based on output of the base SAT and output of the rack force estimation portion.Type: ApplicationFiled: May 10, 2022Publication date: August 8, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Chung Kim TANG, Kenta MAEDA, Huajun LIU, Atsushi HIRATA, Yasuhito NAKAKUKI
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Publication number: 20240149942Abstract: A steer-by-wire type steering apparatus includes a steering input device; a steering device; and a control device. The steering input device includes a reaction force actuator configured to apply steering reaction force to a steering operation input member. The steering device includes a steering actuator configured to cause steered road wheels to be steered through a steering member. The control device includes a reaction force actuator output amount decrease unit configured to decrease an output amount of the reaction force actuator when a deviation between an operation amount of the steering operation input member and a steering amount of the steering member increases and vehicle speed of a vehicle increases. This can prevent the steering operation input member from being abruptly moved in spite of a collision of the steered road wheels with an obstacle or other factors at the time of high vehicle speed.Type: ApplicationFiled: December 29, 2021Publication date: May 9, 2024Applicant: HITACHI ASTEMO, LTD.Inventor: Atsushi HIRATA
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Publication number: 20240025475Abstract: A steer-by-wire steering apparatus according to the present invention includes: a reaction force actuator control section that controls an output amount of a reaction force actuator; a steering actuator control section that controls a steering actuator in response to a manipulation of a steering operation input member, the steering actuator steering steered wheels via a steering unit; a deviation recognition section that recognizes a deviation between a manipulation amount of the steering operation input member and a steering amount of the steering unit; and a reaction force actuator output boost section that, when the deviation increases, increases the output amount of the reaction force actuator. Thus, the steering reaction force can be appropriately controlled in correspondence with a response delay in the steering amount of the steering unit with respect to the manipulation amount of the steering operation input member.Type: ApplicationFiled: September 6, 2021Publication date: January 25, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Atsushi HIRATA, Yasuhito NAKAKUKI, Tsukasa MIYAJIMA, Huajun LIU
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Publication number: 20230059965Abstract: A steering input device for steer-by-wire, according to the present invention, includes a steering shaft that is mechanically separated from a steered wheel, a reaction force motor that applies a steering load to the steering shaft, a lock mechanism that regulates rotation of the steering shaft, a steering amount sensor that detects an operation amount of the steering shaft and outputs an operation amount signal, and a controller. The controller increases the reaction torque generated by the reaction force motor after the starting switch of the vehicle is switched to an OFF state, and after the reaction torque is increased, switches the lock mechanism to a locked state. Thereby, it is possible to suppress an uncomfortable sensation of the driver in steering, while suppressing occurrence of a phase shift between the steering wheel and the steered wheel when the starting switch of the vehicle is switched to the OFF state.Type: ApplicationFiled: February 3, 2021Publication date: February 23, 2023Applicant: HITACHI ASTEMO, LTD.Inventors: Yasuhito NAKAKUKI, Makoto KIMURA, Huajun LIU, Atsushi HIRATA
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Publication number: 20230053866Abstract: A computer system, which is coupled to a plurality of databases configured to store data having different data types, being configured to: manage a catalog database configured to store a catalog including information on an SQL which has been used; execute, in a case of receiving a retrieval request including a first SQL from a user terminal, the first SQL and output an execution result of the first SQL to the user terminal; refer to the catalog database, and select at least one recommended SQL in which a retrieval condition, which is a retrieval condition for retrieving data by joining the plurality of databases, and is similar to the retrieval condition of the first SQL, is defined; and present the at least one recommended SQL to the user terminal.Type: ApplicationFiled: March 9, 2022Publication date: February 23, 2023Inventors: Katsuaki NAKAMIZO, Yuji KOSEKI, Yasuhiro KAWABATA, Atsushi HIRATA
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Patent number: 11584428Abstract: A steering device includes: an offset correction value storing section to store an offset correction value including a first offset correction value and a second offset correction value, the first offset value being a current value for correcting the first sensed current signal so that a value of a vibration of the electric motor is equal to or smaller than a first predetermined value when the motor rotation speed signal is a first rotation speed, and the second offset value being a current value for correcting the first sensed current signal so that the value of the vibration of the electric motor is equal to or smaller than a second predetermined value when the motor rotation speed signal is a second rotation speed.Type: GrantFiled: August 28, 2019Date of Patent: February 21, 2023Assignee: HITACHI ASTEMO, LTD.Inventors: Atsushi Hirata, Kazuya Yamano, Tatsuro Suzuki, Masaki Kashima
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Publication number: 20210215052Abstract: A turbine impeller includes: a base material which contains aluminum as a main element; and an anti-erosion coating which covers a surface of the base material. Accordingly, since liquid droplets hit the anti-erosion coating before the base material even when the liquid droplets flow into the rotating turbine impeller, the damage to the base material due to erosion is suppressed.Type: ApplicationFiled: June 6, 2019Publication date: July 15, 2021Applicant: IHI CorporationInventors: Yoshimitsu MATSUYAMA, Yukio TAKAHASHI, Atsushi HIRATA, Kazuo MIYOSHI, Kenichi TAKAHASHI, Daisuke WADA, Yasuhiro RAI
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Publication number: 20200086910Abstract: A steering device includes: an offset correction value storing section to store an offset correction value including a first offset correction value and a second offset correction value, the first offset value being a current value for correcting the first sensed current signal so that a value of a vibration of the electric motor is equal to or smaller than a first predetermined value when the motor rotation speed signal is a first rotation speed, and the second offset value being a current value for correcting the first sensed current signal so that the value of the vibration of the electric motor is equal to or smaller than a second predetermined value when the motor rotation speed signal is a second rotation speed.Type: ApplicationFiled: August 28, 2019Publication date: March 19, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Atsushi HIRATA, Kazuya YAMANO, Tatsuro SUZUKI, Masaki KASHIMA
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Patent number: 10282380Abstract: In a data retrieval/distribution apparatus which retrieves designated information from the collected data in accordance with a retrieval/distribution request sent from a data retrieval/distribution client, and sends a retrieval result to the data retrieval/distribution client, the data retrieval/distribution client sends, to the data retrieval/distribution server, the retrieval/distribution request including a first retrieval condition using a virtual data conversion definition, which is a virtualization of data conversion definitions as a definition for converting the collected data into a distribution format, a processing unit of the data retrieval/distribution apparatus generates a second retrieval condition using each of the data conversion definitions from the first retrieval condition, executes retrieval processing according to the generated second retrieval condition, and sends a retrieval result of the retrieval processing to the data retrieval/distribution client as a retrieval result according to thType: GrantFiled: July 16, 2014Date of Patent: May 7, 2019Assignee: Hitachi, Ltd.Inventors: Kazuhiro Matsuya, Naoki Ikawa, Atsushi Hirata
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Patent number: 9636716Abstract: This vacuum cleaning device is provided with: a vapor chamber in which vapor of a hydrocarbon-based cleaning agent is generated; a condensation chamber; a first heat exchanger in which heat exchange between the vapor and a heating medium is carried out; a cleaning chamber in which a workpiece can be cleaned under vacuum by the condensed cleaning agent that has been generated in the condensation chamber; a compressor that adiabatically compresses and further heats the heating medium that was heated by the first heat exchanger; a second heat exchanger that carries out heat exchange between the heating medium heated by the compressor and the hydrocarbon-based cleaning agent in the vapor chamber; and a vacuum unit that further cools the heating medium that has been cooled by the second heat exchanger by forcing vacuum expansion of the heating medium.Type: GrantFiled: August 12, 2014Date of Patent: May 2, 2017Assignees: IHI CORPORATION, IHI MACHINERY AND FURNACE CO., LTD.Inventors: Atsushi Hirata, Yasuhiro Shigegaki, Tetsuya Hirata, Kazuo Miyoshi, Yoshiyasu Matsuda, Noboru Hiramoto
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Publication number: 20170091328Abstract: In a data retrieval/distribution apparatus which retrieves designated information from the collected data in accordance with a retrieval/distribution request sent from a data retrieval/distribution client, and sends a retrieval result to the data retrieval/distribution client, the data retrieval/distribution client sends, to the data retrieval/distribution server, the retrieval/distribution request including a first retrieval condition using a virtual data conversion definition, which is a virtualization of data conversion definitions as a definition for converting the collected data into a distribution format, a processing unit of the data retrieval/distribution apparatus generates a second retrieval condition using each of the data conversion definitions from the first retrieval condition, executes retrieval processing according to the generated second retrieval condition, and sends a retrieval result of the retrieval processing to the data retrieval/distribution client as a retrieval result according to thType: ApplicationFiled: July 16, 2014Publication date: March 30, 2017Inventors: Kazuhiro MATSUYA, Naoki IKAWA, Atsushi HIRATA
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Publication number: 20160006839Abstract: Proposed are a data collection and distribution method, a data collection and distribution apparatus and a program which enable the convenience of a data provider to be improved. A data collection and distribution apparatus, which acquires and stores collected data collected by a data collection client and distributes the collected data to a data destination client, determines whether or not an attribute of the collected data collected from the data collection client is at variance with an attribute according to a prior arrangement, determines a collected data processing method based on a determination result, and selectively distributes the collected data of the attribute according to the prior arrangement to the data destination client based on a determination result.Type: ApplicationFiled: December 25, 2013Publication date: January 7, 2016Inventors: Junya SAWAZAKI, Atsushi HIRATA, Yoshitaka SATOU
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Publication number: 20140352100Abstract: This vacuum cleaning device is provided with: a vapor chamber in which vapor of a hydrocarbon-based cleaning agent is generated; a condensation chamber; a first heat exchanger in which heat exchange between the vapor and a heating medium is carried out; a cleaning chamber in which a workpiece can be cleaned under vacuum by the condensed cleaning agent that has been generated in the condensation chamber; a compressor that adiabatically compresses and further heats the heating medium that was heated by the first heat exchanger; a second heat exchanger that carries out heat exchange between the heating medium heated by the compressor and the hydrocarbon-based cleaning agent in the vapor chamber; and a vacuum unit that further cools the heating medium that has been cooled by the second heat exchanger by forcing vacuum expansion of the heating medium.Type: ApplicationFiled: August 12, 2014Publication date: December 4, 2014Inventors: Atsushi HIRATA, Yasuhiro SHIGEGAKI, Tetsuya HIRATA, Kazuo MIYOSHI, Yoshiyasu MATSUDA, Noboru HIRAMOTO
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Publication number: 20140020393Abstract: A combustor for gas turbine engine, wherein: a plurality of impingement-cooling holes are opened passing through an external wall of a liner for cooling air to blow out towards the outer surface of an internal wall of the liner; a plurality of pin-fins are formed on the outer surface of the internal wall of the liner; a plurality of effusion cooling holes are opened passing through the internal wall of the liner for cooling air to blow out along the inner surface of the internal wall of the liner. The top surface of each pin-fin is not in contact with the inner surface of the external wall of the liner and the ratio of the height of the pin-fin to the equivalent diameter of the impingement-cooling hole is set to be 1.0-3.0.Type: ApplicationFiled: September 27, 2013Publication date: January 23, 2014Applicant: IHI CorporationInventors: Chiyuki NAKAMATA, Yoji Okita, Jun Hosoi, Nagayoshi Hiromitsu, Atsushi Hirata, Takeomi Ideta
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Patent number: 8572965Abstract: A chimney has a lower portion substantially in the shape of a pyramid and an upper portion forming a cylindrical portion that extends with a predetermined dimension upwardly and is provided in a ceiling portion of a building of a coil yard that is used for temporary storage of the hot-rolled coil which is an intermediate iron and steel product acting as a high-temperature heat radiator that is manufactured using the hot-rolling equipment of an iron and steel mill. A power generating turbine is provided at a predetermined position in the cylindrical portion. An intake duct is provided on a lower end portion of the side walls of the building. Hot-rolled coils that are in a high-temperature condition after manufacture are successively imported into the coil yard and accumulated and stored until transfer to a subsequent processing step. An ascending airflow is generated by sequential heating of air introduced into the building from the intake duct using heat retained in the hot-rolled coils.Type: GrantFiled: February 6, 2009Date of Patent: November 5, 2013Assignee: IHI CorporationInventors: Hiroyuki Otsuka, Hisakazu Onizuka, Shinsuke Matsuno, Takahisa Nagao, Yoshiyuki Yamane, Atsushi Hirata, Kazuo Miyoshi, Masahiro Nakajima
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Patent number: 8397794Abstract: Described herein is a twin roll caster including a pair of casting rolls arranged parallel to one another with a gap between the casting rolls and side dams parallel to one another forming a pool between the casting rolls and side dams. A side dam support is provided that applies a compression force on at least one of the side dams at a compression angle relative to the axis of the casting rolls.Type: GrantFiled: April 3, 2012Date of Patent: March 19, 2013Assignee: Castrip, LLCInventors: Katsumi Nakayama, Atsushi Hirata, Kiroyuki Otsuka, Hisahiko Fukase