Patents by Inventor Rei ARAKI
Rei ARAKI 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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Patent number: 11296624Abstract: An electronic control device of the invention having a multiple of power supply system lines, with an object of providing a device such that no circulation path is formed in a ground line, includes a power supply in which a multiple of power supply system lines are provided, a multiple of drive units to which the power is independently supplied from the power supply system lines, and at least one controller that outputs control signals to the multiple of drive units, and is configured so that negative side lines of the power supply system lines are connected by one ground line in the controller.Type: GrantFiled: May 25, 2016Date of Patent: April 5, 2022Assignee: Mitsubishi Electric CorporationInventors: Shunsuke Fushie, Yu Kawano, Rei Araki
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Patent number: 11159118Abstract: An electric power steering device includes: an electric motor including multi-phase coils, which is configured to cause a steering mechanism of a vehicle to rotate; and a control unit including a plurality of inverter circuits configured to drive the electric motor, wherein the inverter circuits include capacitors for smoothing, which are small in number than phase number of the electric motor, and the capacitors are arranged between bridge circuits of respective phases of the inverter circuits.Type: GrantFiled: May 11, 2017Date of Patent: October 26, 2021Assignee: Mitsubishi Electric CorporationInventors: Rei Araki, Yu Kawano, Norihiro Yamaguchi
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Patent number: 11131720Abstract: Provided is an electronic control device, including: a plurality of grounding terminals provided to a plurality of grounds in the device individually on a one-to-one basis; a grounding common portion for connecting a plurality of grounding points provided to the plurality of grounds individually on a one-to-one basis; a current detection unit configured to detect each of currents flowing between the plurality of grounding points and the plurality of grounding terminals provided for the plurality of grounding points individually on a one-to-one basis or a current flowing through the grounding common portion; and a controller configured to detect a ground open condition for each of the plurality of grounds by comparing a detection result obtained by the current detection unit with a determination value for determining the ground open condition.Type: GrantFiled: May 11, 2017Date of Patent: September 28, 2021Assignee: Mitsubishi Electric CorporationInventors: Rei Araki, Yu Kawano, Norihiro Yamaguchi
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Publication number: 20210211075Abstract: An electronic control device of the invention having a multiple of power supply system lines, with an object of providing a device such that no circulation path is formed in a ground line, includes a power supply in which a multiple of power supply system lines are provided, a multiple of drive units to which the power is independently supplied from the power supply system lines, and at least one controller that outputs control signals to the multiple of drive units, and is configured so that negative side lines of the power supply system lines are connected by one ground line in the controller.Type: ApplicationFiled: May 25, 2016Publication date: July 8, 2021Applicant: Mitsubishi Electric CorporationInventors: Shunsuke FUSHIE, Yu KAWANO, Rei ARAKI
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Publication number: 20200382047Abstract: An electric power steering device includes: an electric motor including multi-phase coils, which is configured to cause a steering mechanism of a vehicle to rotate; and a control unit including a plurality of inverter circuits configured to drive the electric motor, wherein the inverter circuits include capacitors for smoothing, which are small in number than phase number of the electric motor, and the capacitors are arranged between bridge circuits of respective phases of the inverter circuits.Type: ApplicationFiled: May 11, 2017Publication date: December 3, 2020Applicant: Mitsubishi Electric CorporationInventors: Rei ARAKI, Yu KAWANO, Norihiro YAMAGUCHI
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Publication number: 20200158788Abstract: Provided is an electronic control device, including: a plurality of grounding terminals provided to a plurality of grounds in the device individually on a one-to-one basis; a grounding common portion for connecting a plurality of grounding points provided to the plurality of grounds individually on a one-to-one basis; a current detection unit configured to detect each of currents flowing between the plurality of grounding points and the plurality of grounding terminals provided for the plurality of grounding points individually on a one-to-one basis or a current flowing through the grounding common portion; and a controller configured to detect a ground open condition for each of the plurality of grounds by comparing a detection result obtained by the current detection unit with a determination value for determining the ground open condition.Type: ApplicationFiled: May 11, 2017Publication date: May 21, 2020Applicant: Mitsubishi Electric CorporationInventors: Rei ARAKI, Yu KAWANO, Norihiro YAMAGUCHI
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Patent number: 10490997Abstract: An electronic control device having multiple system circuits is such that power supply interrupting means is provided independently in all the system circuits, an abnormal system circuit is interrupted using the interrupting means in accordance with an abnormality being detected, and control is continued using a normal system circuit, whereby redundancy is improved. A multiple of system circuits formed of a drive unit system circuit and a controller system circuit are divided from a branch point of a power line, and furthermore, a relay function of being capable of controlling so as to interrupt a power supply to each system circuit is disposed in each system circuit, whereby each system circuit can independently be shut off or continue to be operated.Type: GrantFiled: May 18, 2016Date of Patent: November 26, 2019Assignee: Mitsubishi Electric CorporationInventors: Rei Araki, Yu Kawano
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Publication number: 20190067933Abstract: An electronic control device having multiple system circuits is such that power supply interrupting means is provided independently in all the system circuits, an abnormal system circuit is interrupted using the interrupting means in accordance with an abnormality being detected, and control is continued using a normal system circuit, whereby redundancy is improved. A multiple of system circuits formed of a drive unit system circuit and a controller system circuit are divided from a branch point of a power line, and furthermore, a relay function of being capable of controlling so as to interrupt a power supply to each system circuit is disposed in each system circuit, whereby each system circuit can independently be shut off or continue to be operated.Type: ApplicationFiled: May 18, 2016Publication date: February 28, 2019Applicant: Mitsubishi Electric CorporationInventors: Rei ARAKI, Yu KAWANO
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Patent number: 10193412Abstract: A board includes a separating zone in an area closer to the edge than to the center of the board, the separating zone including one elongated through hole. A first group of electronic components that is a source of heat or electric noise is placed in a first area on the center side with respect to the separating zone of the board. On the other hand, a second group of electronic components from which influence of heat or electric noise from other components needs to be eliminated to a maximum extent is placed in a second area on the edge side with respect to the separating zone of the board.Type: GrantFiled: May 22, 2014Date of Patent: January 29, 2019Assignee: Mitsubishi Electric CorporationInventors: Rei Araki, Yu Kawano, Yoshihito Asao
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Patent number: 9800196Abstract: A control apparatus for an AC rotary machine includes voltage application units 3, 4 for applying voltages respectively to two sets of three-phase windings of AC rotary machine 1, control unit 5 that controls the voltage application units 3, 4, and fault detection units 6, 7 that output fault detection signals to control unit 5 varying in accordance with the ground short fault and the power short fault. When detecting, control unit 5 outputs a voltage command to faulty voltage application unit 3, 4 to set voltages of respective phases of the three-phase windings at a negative electrode side potential V? of DC power supply 2, and when detecting a power short fault, control unit 5 outputs a voltage command to set the voltages of the respective phases of the three-phase windings at a positive electrode side potential V+ of DC power supply 2.Type: GrantFiled: April 23, 2014Date of Patent: October 24, 2017Assignee: Mitsubishi Electric CorporationInventors: Tatsuya Mori, Isao Kezobo, Yoshihiko Kimpara, Masaya Sakai, Akira Furukawa, Yu Kawano, Rei Araki
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Publication number: 20160373050Abstract: A control apparatus for an AC rotary machine includes voltage application units 3, 4 for applying voltages respectively to two sets of three-phase windings of AC rotary machine 1, control unit 5 that controls the voltage application units 3, 4, and fault detection units 6, 7 that output fault detection signals to control unit 5 varying in accordance with the ground short fault and the power short fault. When detecting, control unit 5 outputs a voltage command to faulty voltage application unit 3, 4 to set voltages of respective phases of the three-phase windings at a negative electrode side potential V? of DC power supply 2, and when detecting a power short fault, control unit 5 outputs a voltage command to set the voltages of the respective phases of the three-phase windings at a positive electrode side potential V+ of DC power supply 2.Type: ApplicationFiled: April 23, 2014Publication date: December 22, 2016Applicant: Mitsubishi Electric CorporationInventors: Tatsuya MORI, Isao KEZOBO, Yoshihiko KIMPARA, Masaya SAKAI, Akira FURUKAWA, Yu KAWANO, Rei ARAKI
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Publication number: 20160329774Abstract: A board includes a separating zone in an area closer to the edge than to the center of the board, the separating zone including one elongated through hole. A first group of electronic components that is a source of heat or electric noise is placed in a first area on the center side with respect to the separating zone of the board. On the other hand, a second group of electronic components from which influence of heat or electric noise from other components needs to be eliminated to a maximum extent is placed in a second area on the edge side with respect to the separating zone of the board.Type: ApplicationFiled: May 22, 2014Publication date: November 10, 2016Applicant: Mitsubishi Electric CorporationInventors: Rei ARAKI, Yu KAWANO, Yoshihito ASAO