Patents Assigned to Mitsubishi Electric Corporation
  • Publication number: 20240120817
    Abstract: A permanent magnet-type rotary electric machine includes a stator, a first rotor, and a second rotor. The stator includes a stator core, a plurality of stator teeth, a plurality of stator slots, a plurality of stator magnets, and a stator coil. The first rotor is disposed inside the stator core relative to the plurality of stator magnets. The second rotor is disposed inside the stator core relative to a plurality of first pole pieces. The second rotor includes a plurality of second pole pieces. A proportion of the number of the plurality of stator slots to the number of poles of the plurality of second pole pieces of the second rotor is greater than 1.25 and less than 1.5, or greater than 1.5 and less than 3.0.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 11, 2024
    Applicants: Mitsubishi Electric Corporation, OSAKA UNIVERSITY
    Inventors: Haruyuki KOMETANI, Ryoji MIYATAKE, Takuro YAMADA, Kenji TANAKA, Katsuhiro HIRATA, Noboru NIGUCHI, Kazuaki TAKAHARA, Hironori SUZUKI, Takuya ITO
  • Publication number: 20240120833
    Abstract: Provided is a power converter in which increase in the wiring inductance of a busbar connected to a capacitor is effectively suppressed. The power converter includes: a capacitor having a first electrode and a second electrode; and a specific busbar connected to a specific electrode which is one or each of both of the first electrode and the second electrode. The specific busbar has a folded wiring portion having parts opposing each other by being folded, at the specific electrode, and an end of the folded wiring portion is connected to the specific electrode.
    Type: Application
    Filed: January 13, 2023
    Publication date: April 11, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventor: Tetsuro FUJIWARA
  • Publication number: 20240120870
    Abstract: An abnormality diagnosis device includes: a feature quantity calculation unit which calculates a plurality of feature quantities from the time-series data of the current values; an operation mode determination unit which determines an operation mode of a compressor on the basis of the load torque and the drive frequency; a feature quantity distribution generation unit which generates a feature quantity distribution from values of the plurality of feature quantities; a reference region generation unit which generates a reference region on the basis of the feature quantity distribution that is obtained in a normal case; and a determination unit which compares the feature quantity distribution that is obtained during an abnormality diagnosis and the reference region corresponding to the operation mode that is applied during the abnormality diagnosis, to determine whether an abnormality is present or absent in either of the compressor and the electric motor.
    Type: Application
    Filed: April 8, 2021
    Publication date: April 11, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroshi INOUE, Ken HIRAKIDA, Makoto KANEMARU, Takaharu NAKAMURA
  • Publication number: 20240121508
    Abstract: A video transmission system includes: a video data acquiring unit to acquire first video data indicating a first video photographed by a camera; a first inference unit to give the first video data to a first learning model, and acquire intermediate data that is data different from the first video data from the first learning model; a data transmission unit to transmit the intermediate data; a data reception unit to receive the intermediate data transmitted from the data transmission unit; and a second inference unit to give the intermediate data to a second learning model, and acquire, from the second learning model, second video data indicating a predicted video of a second video of which a photographing time of the camera is advanced from that of the first video by a transmission time of the intermediate data from the data transmission unit to the data reception unit or more.
    Type: Application
    Filed: April 28, 2021
    Publication date: April 11, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventor: Shotaro MIWA
  • Patent number: 11953220
    Abstract: A comfort-analyzing device includes a display unit, a first control unit, an input unit, and a cognitive-structure constructing unit. The display unit is configured to present a questionnaire for extracting both a comfort level of a user in an environment and at least one environmental factor to determine the comfort level. The first control unit is configured to cause the display unit to present the questionnaire twice or more during a survey period. The input unit is configured to accept, from the user, input of each reply to the questionnaire presented twice or more. The cognitive-structure constructing unit is configured to construct a cognitive-structure model representing a cognitive structure of the user regarding comfort by extracting both the comfort level and the at least one environmental factor in chronological order based on each reply to the questionnaire presented twice or more.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kota Kurihara, Seiro Yuge, Makoto Takata, Noriko Nagata, Masashi Sugimoto
  • Patent number: 11952054
    Abstract: There is provided an electric power steering apparatus in which at least one of a motor housing and a control unit has a respiratory apparatus that performs a respiratory action, based on an inner pressure change in at least one of the motor housing and the control unit.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: April 9, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihito Asao, Yoshihiko Onishi, Toyoaki Udo
  • Patent number: 11953608
    Abstract: An object of the present invention is to continuously estimate the position with high accuracy while the moving body is traveling. A position estimation device is installed in a moving body, and includes a position estimation unit configured to estimate a position of a subject moving body being the moving body in which the position estimation device is installed using any of positioning means of satellite positioning using a positioning satellite or radio wave positioning using wireless communication, and a positioning means selection unit configured to switch the positioning means the position estimation unit uses for estimation of the position of the subject moving body based on a traveling environment or a peripheral environment of the subject moving body.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuji Hamada, Naoki Isozaki, Takuya Matsuda, Takuma Okamoto
  • Patent number: 11953375
    Abstract: A plurality of lead pins (2a-d) penetrates through a stem (1) having a circular shape and includes a signal lead pin (2a,2b). A block (4) is provided on an upper surface of the stem. A waveguide light receiving device (9) is provided on a side surface of the block. An amplifier (6) is provided on the side surface of the block and amplifies an electric signal output from the waveguide light receiving device. A first relay substrate is provided on the upper surface of the stem and arranged between the block and the signal lead pin. A first transmission line (12a,12b) is provided on the first relay substrate. A first wire (10f,10g) connects one end of the first transmission line and an output terminal of the amplifier. A second wire (10h,10i) connects the other end of the first transmission line (12a,12b) and the signal lead pin.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: April 9, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kazuki Yamaji
  • Patent number: 11953005
    Abstract: A compressor includes: a shell forming an outer portion thereof and having lower part in which an oil pan is formed to store oil; a motor provided in the shell; a compression unit provided in the shell to compress a working gas when being driven by the motor; a frame fixed to the shell and supporting the compression unit; a shaft supported by the frame, connecting the motor and the compression unit, provided to transmit a turning force of the motor to the compression unit, and including an oil passage; and an oil pump provided at lower part of the shaft to draw oil from the pan and supply the oil into the oil passage. The pump includes a bypass valve that is opened, when a pressure of oil flowing in the oil passage is higher than a threshold pressure, to return part of the oil to the pan.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: April 9, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Wataru Sasano, Koji Masumoto, Yuji Takamura, Kohei Tatsuwaki
  • Patent number: 11952150
    Abstract: An apparatus communication device (950) communicates with at least one of a parent satellite (310) and a child satellite (320). A control unit (110) generates a control command (51) to capture debris by sandwiching the debris between the parent satellite (310) and the child satellite (320) and carry out an active control operation during orbital descent on a flying object which is the parent satellite (310), the debris, and the child satellite (320) being connected together. Then, the control unit (110) transmits the control command (51) to at least one of the parent satellite (310) and the child satellite (320) via the apparatus communication device (950).
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hisayuki Mukae
  • Patent number: 11953555
    Abstract: An abnormality diagnosis device includes: a data acquirer to acquire a current waveform and a driving frequency of an electric motor; a storage which stores a combination of a current value of the current waveform and the driving frequency at an identical time by the data acquirer; a data determiner to determine whether or not a current value of the current waveform and the driving frequency as a diagnosis target at an identical time by the data acquisition match the combination stored in the storage; an analyzer to perform frequency analysis for the current waveform determined to be matched by the data determiner, to extract sideband waves, and calculate a spectrum intensity of the sideband waves; and an abnormality diagnosis processor to make a diagnosis that abnormality has occurred, when the spectrum intensity of the sideband waves is equal to or greater than a threshold.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Makoto Kanemaru, Takuya Ohkubo, Sota Sano, Akira Satake, Satoru Terashima
  • Patent number: 11955904
    Abstract: In first power transmission in which power is transmitted from a first DC power source to a second DC power source, a control circuit performs on/off drive control of a positive electrode-side switching element and a negative electrode-side switching element in a first bridge circuit and a second bridge circuit and stops on/off drive of a positive electrode-side switching element and a negative electrode-side switching element in a third bridge. For a positive electrode-side switching element and a negative electrode-side switching element of a fourth bridge circuit, when a first power transmission amount by the first power transmission is greater than a predetermined first reference value, the control circuit performs on/off drive control, whereas when the first power transmission amount is smaller than the first reference value, the control circuit stops on/off drive.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuki Itogawa, Yusuke Higaki
  • Patent number: 11955959
    Abstract: A parallel driving device that drives parallel-connected semiconductor elements includes a control unit and a gate driving circuit. The control unit detects a temperature difference between the semiconductor elements on the basis of detected values by temperature sensors that detect temperatures of the individual semiconductor elements. The control unit generates a control signal for changing the timing at which to turn on a first semiconductor element specified from the semiconductor elements on the basis of the temperature difference. The gate driving circuit generates a first driving signal for driving the semiconductor elements, and generates a second driving signal that is the first driving signal delayed on the basis of the control signal, and applies the second driving signal to the first semiconductor element.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasushi Nakayama, Yoshiko Tamada, Takayoshi Miki, Shota Morisaki, Yukio Nakashima, Kenta Uchida, Keisuke Kimura, Tomonobu Mihara
  • Patent number: 11956398
    Abstract: The present disclosure relates to an image reading device having a highly-accurate structure that enables an easy increase in depth of field, that is, improvement in the depth of the field, without need for a change in basic characteristics of lenses. An overlap preventer (5) disposed between a lens array (1) and a sensor element array (3) to prevent overlap of images formed by lenses (2) is included. A slit section (5) that is the overlap preventer (5) includes multiple slit plates (7) arranged in a main scanning direction and extending in a sub-scanning direction to partition off a space, and the slit plates (7) are fixed to fixing plates (13).
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironobu Arimoto, Kazuya Makabe, Daisuke Fukui, Koki Takasaki
  • Patent number: 11956926
    Abstract: An outdoor unit includes a housing having a front surface formed with an outlet and a back surface facing the front surface, an airflow flowing through the outlet; a substrate horizontally placed in the housing, an electric component being mounted on the substrate; and a heat dissipator including a plurality of fins, each of the fins having a heat dissipation surface, the heat dissipator dissipating, due to the airflow, heat generated by the electric component. The heat dissipation surface of each of the fins is parallel to the back surface or is angled at greater than 0 degrees and less than 90 degrees relative to the back surface in top view.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: April 9, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenji Iwazaki, Koichi Arisawa, Takashi Yamakawa, Takuya Shimomugi, Keisuke Mori
  • Patent number: 11956271
    Abstract: A scenario generation device (100) generates an attack scenario (32). An attack means storage unit (130) has stored therein attack means data (131) including a precondition and an attack effect of attack means. An edit screen display unit (110) arranges attack means to be included in the attack scenario (32) on a scenario edit screen (200). By using the attack means data (131), an attack scenario generation unit (20) extracts, from the attack means storage unit (130), another attack means whose attack effect is a precondition of attack means arranged on the scenario edit screen (200). The attack scenario generation unit (20) generates the attack scenario (32) by complementing the attack means arranged on the scenario edit screen (200) with the other attack means.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: April 9, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kiyoto Kawauchi
  • Patent number: 11956146
    Abstract: A reception unit (210) receives an addition requesting frame for requesting addition of a new flow. A first search unit (241) performs, using a network-information database (280), a first search for searching for a schedule and a path assignable to the new flow without the schedule and the path of each existing flow being changed, when the addition requesting frame is received. A second search unit (242) performs a second search for changing the schedule and the path of each existing flow and searching for the schedule and the path assignable to the new flow, using the network-information database, when the schedule and the path assignable to the new flow have not been found by the first search. A response unit (260) transmits an addition responding frame.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Makoto Kubomi, Ryuma Matsushita, Daisuke Takita, Yoshifumi Hotta
  • Patent number: 11956397
    Abstract: An image reading device includes a lens array including lenses arranged in a main scanning direction and forming an erect unmagnified optical system to converge light from a reading target, a holder holding the lens array, a light receiver to receive the light converged by the lenses, and slit units. Each slit unit includes three or more light shielding plates each separating an optical path of one lens from an optical path of another lens between the lens array and the light receiver, and side plates disposed on two sides of the light shielding plates in a direction intersecting the main scanning direction and connecting two adjacent light shielding plates. The slit units are arranged in the main scanning direction, and each two adjacent slit units are arranged with a space therebetween for one optical path of one lens.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toshiyuki Sawabe, Kosaku Yamagata, Hironobu Arimoto, Sadaaki Yoshioka, Takashi Maekawa
  • Patent number: 11950885
    Abstract: Provided is a biosensor device including: a signal generating unit for generating a continuous wave signal; an antenna for emitting the continuous wave signal as a radio wave; a variable matching circuit for performing impedance matching between the signal generating unit and the antenna; a detection circuit for outputting a detection signal on the basis of the continuous wave signal generated by the signal generating unit and a reflected signal of a radio wave incident on the antenna; and a control unit for controlling an element value of the variable matching circuit from the detection signal in a predetermined period corresponding to one cycle or more time in which heartbeat and respiration waveforms can be measured on the basis of the detection signal.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Saki Wada, Kengo Nishimoto, Yasuhiro Nishioka
  • Patent number: 11955539
    Abstract: A device comprising a gate pad, a source pad and a passive actuator arranged to form a reversible mechanical and electrical connection between the gate pad and the source pad only if the temperature in the passive actuator exceeds a threshold value.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Julio Cezar Brandelero, Jeffrey Ewanchuk, Stefan Mollov