Patents Assigned to Hitachi
  • Patent number: 11976788
    Abstract: A compressed air production facility that reduces an extension cost without stopping an operating air compressor in a case of increasing the number of air compressors to cope with an increase in demands for compressed air is provided. A compressed air system supplies compressed air to compressed air consuming devices connected to a compressed air distributions line, the compressed air system including a plurality of air compressor units connected to the compressed air distributions line via respective air tanks. Each of the air compressor units includes: an air compressor main body; an adjustor of pressure setpoint that adjusts a pressure setpoint of an air tank to which the air compressor unit including the adjustor of pressure setpoint is connected; and a controller of air compressor that operates a rotational frequency of the air compressor main body on the basis of the pressure setpoint adjusted by the adjustor of pressure setpoint and a pressure of the air tank.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: May 7, 2024
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Minoru Koizumi, Mitsuhiro Imai
  • Patent number: 11977764
    Abstract: An administrative terminal receives designation of generation target data and of a generation destination storage device and identifies data similar to the target data. The terminal calculates a first predicted time expected for transmitting the target data from a storage device holding the target data to the generation destination storage device, and a second predicted time expected to be required for a second transmission process of transmitting the similar data from an object storage service to the generation destination storage device and of transmitting difference data between the target data and the similar data from the storage device holding the target data to the generation destination storage device. If the second predicted time is shorter than the first predicted time, the administrative terminal performs the second transmission process to transmit the similar data and the difference data to the generation destination storage device to generate the generation target data therein.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventors: Hideyuki Koseki, Akira Deguchi, Masahiro Arai
  • Patent number: 11977035
    Abstract: A surface shape detection device using differential interference optics achieves restoration error reduction of a surface shape while maintaining resolution.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: May 7, 2024
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Kenichiro Yamada, Shinsuke Onoe, Makoto Hosaka
  • Patent number: 11976704
    Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: May 7, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Yasutomo Mabe, Kiyokazu Nakane, Hiromichi Komai, Xiaojin Zhu, Toshiyuki Masuda, Kenichiro Ishikura
  • Patent number: 11977362
    Abstract: In the conventional distributed control system, since each control device updates the data area at a timing when a control packet is received, in a case where there is a difference in communication delay between the control devices or in a case where the communication delay includes jitter, it is difficult to match the contents of data in all the control devices in a case of focusing on a certain moment during system operation. Therefore, depending on the start timing of a control application, the control application operates on the basis of different data between the control devices, thus limiting control performance improvement. Accordingly, time slots on the network are allocated according to the result of a calculation unit, and a cyclic memory synchronization update unit synchronizes the timing of reflecting data in the input/output and the cyclic memory and the timing of using data of a cyclic memory.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventors: Tatsuya Maruyama, Yusaku Otsuka, Hidenori Omiya, Toshiki Shimizu, Iori Kobayashi, Kazutaka Onishi, Noritaka Matsumoto
  • Patent number: 11977099
    Abstract: A method for manufacturing a semiconductor device in which probes and the layout of the electrode pads of a test element group (TEG) are associated is provided. As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Thus, it is necessary to associate the probes and the layout of the electrode pad. According to the method, a layout of a TEG electrode pad corresponding to a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology is provided.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 7, 2024
    Assignee: Hitachi High-Tech Corporation
    Inventors: Tomohisa Ohtaki, Takayuki Mizuno, Ryo Hirano, Toru Fujimura, Shigehiko Kato, Yasuhiko Nara, Katsuo Ohki, Akira Kageyama, Masaaki Komori
  • Patent number: 11979058
    Abstract: An object is to assemble a housing to a mating bracket with high accuracy and to improve the reliability of a rotating electrical machine. A housing of a rotating electrical machine according to the present invention is a housing of a rotating electrical machine that accommodates a stator of the rotating electrical machine and is supported by a support member, the housing including: a first tab that forms a first through-hole through which a first screw passes; and a second tab that forms a second through-hole through which a second screw passes and forms a fitting portion that fits with a position adjustment member, wherein the first tab is formed such that a first facing surface facing the support member of the first tab is farther from the support member than a second facing surface facing the support member of the second tab.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: May 7, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Shinjirou Watari, Shinji Yamazaki, Tomohiro Fukuda, Mohdbasir Zulaika
  • Patent number: 11977765
    Abstract: The functions of a mainframe environment are expanded by leveraging the functions of an open environment.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: May 7, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Naoyuki Masuda, Ryusuke Ito, Kenichi Oyamada, Yuri Hiraiwa, Goro Kazama, Yunde Sun, Ryosuke Kodaira
  • Patent number: 11977433
    Abstract: Aspects of the present disclosure involve an innovative method for detecting error zones from a plurality of volume groups. The method may include creating a plurality of probe groups for error detection; detecting a new error associated with the plurality of probe groups and the plurality of volume groups; retrieving error information associated with the new error, wherein the error information comprises an error source, an error type, and an error time; retrieving an error correlation rule associated with the error information; determining if the error correlation rule is satisfied by the error information and information of other known errors; and identifying a common zone based on the error information and the information of the other known errors as an error zone.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventors: Hiroyuki Osaki, Tomohiro Kawaguchi
  • Patent number: 11977441
    Abstract: This failure tree generation device includes: a causal relationship storage unit that stores information indicating a linkage of the causal relationship of defects of respective component parts constituting subjects to be analyzed in a manner such that the information is associated with the connection relationship of the respective component parts; a system-level failure tree generation unit that generates, for each of the component parts and on the basis of component part constitution information indicating the constitution of component parts to be analyzed and component part connection information indicating the connection relationship of the respective component parts, first element information which is information indicating disturbance having occurred in information transfer between the respective component parts and which indicates the relationship between each of the component parts and a phenomenon having occurred on the component part, and generates, on the basis of the respective items of first elem
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 7, 2024
    Assignee: Hitachi, Ltd.
    Inventor: Yuuki Shimizu
  • Patent number: 11977467
    Abstract: An object of the present invention is to provide a simulation device having a function of adding delay processing for making an execution timing of a personal computer (PC) simulation environment close to that of an actual electronic control unit (ECU). There is provided a simulation device for converting application software into an execution code, verifying the execution code, and porting the verified execution code to another computer device, wherein the simulation device adjusts an execution timing in the other computer device by performing time adjustment processing at the time of starting or ending a function in function units of a source code of an application.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: May 7, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yasunori Murashima, Yuji Fukushima, Fumio Narisawa
  • Patent number: 11977876
    Abstract: Provided is an update device capable of appropriately updating the nodes used in business processing. The update device comprises a communication control unit which instructs the load balancer to stop distribution to the first cluster, a transfer unit which instructs the first management node and the second management node to transfer the first execution node from being under management of the first management node to being under management of the second management node, and an update unit which instructs the first management node to update the first management node on grounds that the first execution node being under management of the first management node has been transferred to being under management of the second management node.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventor: Keisuke Takagi
  • Patent number: 11979095
    Abstract: An object of the present invention is to provide a power conversion device capable of specifying a failure location of an inverter in detail when an attempt of active discharge fails. There are provided an arithmetic operation circuit 102 that outputs a discharge instruction to control a discharge operation based on a voltage between both ends of a discharge circuit, and an output circuit 203 that outputs a drive signal based on the control signal. The arithmetic operation circuit 102 monitors an amount of the decreased voltage between both the ends of the discharge circuit, an LV read back signal being an output of the arithmetic operation circuit 102, and an HV read back signal being an output of the output circuit 203, and specifies a failure location.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: May 7, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Norio Murayama, Takeshi Yoshida, Takahiro Nishida, Itsuro Nomura
  • Patent number: 11978565
    Abstract: A sodium-cooled nuclear reactor includes at least one electromagnetic pump assembly and a backflow reduction pipe. The backflow reduction pipe may include an inlet, an outlet, at least one tubular section having a first length and a first diameter, and at least one fluid diode section between the inlet and the outlet.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: May 7, 2024
    Assignee: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: Eric Paul Loewen, Seth Ryan Paul Strege, Nicholas Francis O′Neill, Colin Christopher O′Connor, Chelsea Ann Curtin, Edwin Wu
  • Patent number: 11979017
    Abstract: Provided is a novel power conversion device that enables estimation of a temperature of a power device without using a temperature sensing diode and can accurately estimate a temperature and a current of a current sensing element that observes a main current. A measurement voltage (Vref) is applied between source terminals (31s and 49s) of a main control element 31 and a current sensing element 49 in a state in which the main control element 31 and the current sensing element 49 are turned off, and a temperature of a power device 30 is estimated from a current (Ib) flowing between the source terminals (31s and 49s) of the main control element 31 and the current sensing element 49 at the time of the application by using the fact that a resistance value of a semiconductor substrate between the source terminals of the main control element 31 and the current sensing element 49 has temperature dependency.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: May 7, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Tomohiko Yano, Shinichirou Wada, Yoichiro Kobayashi
  • Patent number: 11979022
    Abstract: Example approaches for power quality monitoring in a power distribution grid are described. In an example, monitoring data is received by a communication gateway from a node coupled to it. In an example, there may be multiple nodes in the power distribution grid. Local insights for power quality monitoring may be estimated, based on the monitoring data, using predictive analytics at the communication gateway. The monitoring data and the local insights associated with each of the plurality of nodes is transmitted to the server. Global insights for power quality monitoring may be estimating, using predictive analytics performed at the server, based on the monitoring data and the local insights. An indication to an operator is generated, based on the estimated local insights, global insights and the monitored data, to carry out preventive or corrective action for maintaining the power quality in the power distribution grid.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: May 7, 2024
    Assignee: Hitachi Energy Ltd
    Inventors: Hariram Satheesh, Ravish Kumar, Srijit Kumar
  • Patent number: 11977050
    Abstract: An analysis unit 111 for automatically analyzing a sample comprises a sample dispensing nozzle 2 for dispensing the sample and an electrolyte measurement unit 114 for carrying out internal standard liquid measurement one or more times at least before measuring the electric potential of the sample. If the electrolyte measurement unit 114 is to carry out the electric potential measurement of the sample in succession, a different internal standard liquid measurement operation is carried out before the electric potential measurement than if the electric potential measurement is not to be carried out in succession and there are to be gaps between measurement intervals. This results in the provision of an automated analyzer, automatic analysis system, and automatic sample analysis method that make it possible to reduce the influence of ambient temperature on electrolyte measurement, ensure measurement accuracy, and enhance overall device processing capacity.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: May 7, 2024
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Masashi Fukaya, Akihiro Yasui
  • Publication number: 20240142477
    Abstract: Provided is an automatic analyzer without necessity of manual air vent in a pump. This automatic analyzer comprises a water supply tank, a supply path connected to each mechanism of an automatic analyzer from the water supply tank, a water supply pump which supplies water to each mechanism from the water supply tank through the supply path, a detector which detects abnormality in the supply path, a waste liquid path branched from the supply path in a branch pipe provided in the supply path, a relief valve provided in the waste liquid path, and a control unit which controls the operation of each mechanism in the automatic analyzer, in which the control unit opens the relief valve while driving the water supply pump, based on the abnormality in the supply path detected by the detector.
    Type: Application
    Filed: February 17, 2022
    Publication date: May 2, 2024
    Applicant: HITACHI HIGH-TECH CORPORATION
    Inventors: Yasuhisa Oguro, Hiroyuki Takayama, Kouhei Nonaka
  • Publication number: 20240147621
    Abstract: A manufacturing method of a circuit board including an annular land portion around a through hole through which a terminal that is an object of a soldering penetrates, and that is soldered on the land portion by a soldering process with a solder supply, the manufacturing method includes: previously forming a preliminary solder at a position opposite to a supply position of the solder in the land portion with respect to the through hole before the soldering process.
    Type: Application
    Filed: December 1, 2021
    Publication date: May 2, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Narutoshi YAMADA, Yuuichi YANAGISAWA, Takahiro MAKIKO
  • Publication number: 20240142148
    Abstract: An air conditioner and a method for calculating an operating parameter of an indoor unit are provided. The air conditioner includes an outdoor unit, an indoor unit, and a controller. The controller is configured to: in a case where the air conditioner is in a cooling state, determine an operating parameter of the indoor unit in a second cooling state according to a heat exchange area, a heat exchange coefficient, and a heat exchange temperature difference of an indoor heat exchanger; and determine an operating parameter of the indoor unit in a first cooling state according to a superheat degree of an outlet of the indoor heat exchanger in the first cooling state, a superheat degree of the outlet of the indoor heat exchanger in the second cooling state, and the operating parameter of the indoor unit in the second cooling state.
    Type: Application
    Filed: January 5, 2024
    Publication date: May 2, 2024
    Applicant: QINGDAO HISENSE HITACHI AIR-CONDITIONING SYSTEMS CO., LTD.
    Inventors: Jiangnan WANG, Yanjin CHE, Xingxiang XIA, Heng ZHANG