Patents Assigned to Mitsubishi Electric Cornoration
  • Patent number: 11705816
    Abstract: The isolation transformer includes two kinds of winding, a high voltage side winding and a low voltage side winding, and the high voltage side winding and the low voltage side winding are formed in winding layers, wherein the high voltage side winding includes windings formed in multiple winding layers, a winding layer having a different number of turns exists in one or more kinds of the two kinds of winding among the windings formed in the multiple winding layers, winding layers wherein current flows in the same direction are stacked in such a way as not to be neighboring, and at least one of winding layers having the greatest number of turns is disposed as a layer other than an outermost layer.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: July 18, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventor: Hayato Tanabe
  • Patent number: 11691602
    Abstract: A wheeled vehicle's antilock brake system (ABS) control device has three kinds of control modes of a braking force oriented mode, a sideways force oriented swinging-motion suppression mode and a sideways force oriented swinging-motion enhancement mode each of which is an ABS control mode being selected by means of an ABS control mode selection unit; and the vehicle ABS control device is so arranged that, in accordance with an ABS control mode selected by the ABS control mode selection unit, target slip rates on each of the vehicle's wheels being set by a target slip-rate setting unit are transferred toward respective braking force orientation or sideways force orientation, thereby the behavior of a wheeled vehicle is stabilized at a time when the wheeled vehicle on which the vehicle ABS control device is mounted makes a turn.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: July 4, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Yoshiki Sakadani, Toshihide Satake, Yuji Shimizu
  • Patent number: 11652402
    Abstract: The objective is to provide a function of detecting loss of a current detection function, at a time when a switching device has an open failure, in an arm that has the current detection function and a temperature detection function and in which two or more switching devices are connected in parallel with one another. A switching apparatus includes a current detector and a temperature detector provided in at least one of the two or more switching devices that are connected in parallel with one another and a controller that determines an overcurrent in the switching device in which the current detector is provided, that determines an overheating state and a temperature-rising failure in the switching device in which the temperature detector is provided, based on an output of the temperature detector, and that controls the switching devices.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: May 16, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventor: Takashi Kaneyama
  • Patent number: 11646686
    Abstract: To provide a controller for AC rotary electric machine which can control considering the interlinkage fluxes of first-axis and second-axis which change mutually according to the currents of first-axis and second-axis, such as d-axis and q-axis. A controller for AC rotary electric machine calculates interlinkage flux model response values of first-axis and second-axis by performing a response delay processing of a model response to the interlinkage flux command values of first-axis and second-axis; and calculates voltage command values of first-axis and second-axis which make interlinkage fluxes of first-axis and second-axis change to the interlinkage flux model response values of first-axis and second-axis in a feedforward manner, based on the interlinkage flux model response values of first-axis and second-axis, and the electrical angle speed.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: May 9, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventor: Shingo Harada
  • Patent number: 11640172
    Abstract: Provided is an apparatus for providing obstacle information and reliability information to vehicle based on information received from roadside units. The apparatus includes a communication module that receives obstacle information from multiple roadside units, each roadside unit including multiple sensors for detecting obstacles within a predetermined field of view. A reliability judgement unit in the apparatus determines a reliability of the received obstacle information to output a reliability value based on a number of roadside units detecting a same obstacle, a number of sensor of one roadside unit detecting a same obstacle, and a difference value of detection of the same obstacle between different roadside units or different sensors.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: May 2, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventor: Takatoshi Kakuta
  • Patent number: 11601029
    Abstract: According to this invention, provided is an electric power steering device, including: a motor having a winding; and a control unit configured to control the motor, the motor and the control unit being integrated with each other in alignment with each other in an axial direction of a rotary shaft of the motor. The winding of the motor includes a winding end portion configured to receive a current supplied thereto. The control unit includes: a current supply circuit, which includes a supply terminal, and is configured to supply the current to the winding end portion; an extension member connected to the supply terminal; and a first connection portion at which the extension member and the winding end portion are connected to each other. The first connection portion is arranged on a radially outer side of the motor with respect to the current supply circuit.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: March 7, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Takanori Ichikawa, Akira Kimishima, Satoshi Iohara
  • Patent number: 11598826
    Abstract: The magnetic detection device includes: a first magnetic rotary body which rotates about a rotation shaft and has an outer circumferential portion which is a magnetic body; a second magnetic rotary body has an outer circumferential portion which is a magnetic body; a magnet which has a magnetization direction along the axial direction; a first magneto-resistive element provided on another side in the axial direction of the magnet; a second magneto-resistive element provided on one side in the axial direction of the magnet; a first magnetic guide provided between the magnet and the first magneto-resistive element; and a second magnetic guide provided between the magnet and the second magneto-resistive element, wherein the outer circumferential portion of the first magnetic rotary body and the outer circumferential portion of the second magnetic rotary body cause different magnetic fields between the magnet and the respective outer circumferential portions.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 7, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Tetsuo Amano, Hideki Shimauchi, Masahiro Yokotani, Yoshinori Tatenuma, Akira Koshimizu
  • Patent number: 11584433
    Abstract: An electric power steering apparatus having independent turning mechanisms for respective four wheels of a vehicle, has a problem in that, when a turning motor fails, a turning mechanism for a corresponding wheel stops functioning, resulting in reduction in the maneuverability and the stability of the vehicle. Turning motors of turning mechanisms independently disposed for respective four wheels of a vehicle, each have a redundant configuration. Specifically, each turning motor is configured as three-phase duplexing motors having two three-phase windings and two inverters for separately driving the three-phase windings.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 21, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventor: Satoru Akutsu
  • Patent number: 11565751
    Abstract: Provided are a lane separation line detection correcting device/method and an automatic driving system for stabilizing the behavior of a vehicle by correcting overestimated curvature information resulting from an erroneous detection of a curvature of a lane separation line. A travel speed detecting circuit detects, for example, a target travel speed as vehicle sensor information. A maximum curvature estimating circuit estimates, based on the target travel speed, a maximum curvature of a road along which an own vehicle is traveling. A curvature correcting circuit corrects a curvature of a lane separation line input thereto based on the maximum curvature. A control unit controls steering of the own vehicle based on the lane separation line having a corrected curvature. As a result, vehicle steering can be automatically controlled so as to prevent the own vehicle while traveling from departing from a driving lane.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 31, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Takuya Taniguchi, Noritaka Kokido, Koji Iida
  • Patent number: 11565698
    Abstract: A histogram is calculated based on a road surface image of a portion around a vehicle, a running-allowed region in which the vehicle can run is detected based on the histogram, an obstacle region is extracted based on the running-allowed region, and a position of an obstacle in the obstacle region is detected, to further enhance the accuracy of detecting an obstacle around the vehicle as compared with conventional art.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 31, 2023
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Kohei Mori, Hiroki Fujiyoshi
  • Patent number: 11540401
    Abstract: An electronic control device includes first extended terminals extended from a multiple of terminals of opposing connectors respectively and second extended terminals extended from opposing control boards respectively. A hole is formed between the opposing connectors in a connector case, each of the first extended terminals and each of the second extended terminals oppose and approach each other toward the hole, in addition to which first extended terminals and second extended terminals are formed heading toward an exterior of the connector case from the hole, and the first extended terminal and the first extended terminal come into contact with differing side faces of the second extended terminal and the second extended terminal.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: December 27, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Kentaro Urimoto, Akira Kimishima, Takahisa Kawaguchi, Takanori Ichikawa
  • Patent number: 11512977
    Abstract: A redundant resolver is configured of a stator and a rotor that form a pair, wherein the rotor is a rotor with a shaft angle multiplier of Nx having Nx (Nx is a natural number) salient poles, the stator is such that n teeth T1 to Tn, where n is a natural number, are disposed sequentially in a circumferential direction, configuring M systems by being divided into M in the circumferential direction, and having an angle of 360/M degrees when angles of the teeth configuring one system are totaled, a one-phase excitation winding and a two-phase output winding are wound around each of the teeth T1 to Tn, excitation signals of the same frequency are applied by differing excitation circuits to the respective excitation windings, an output order per system is Nout (Nout is a natural number), and an abnormality is detected based on output signals of the M systems.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: November 29, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Hiroko Ikeda, Yuji Takizawa, Kazumasa Ito, Shinichi Yamaguchi, Toshihiro Matsunaga, Yosuke Sugino
  • Patent number: 11465669
    Abstract: An electric power steering device includes a motor and a control unit that are arranged coaxially with each other in an axial direction of an output shaft and integrated with each other. The control unit includes power modules configured to supply current to the motor, a heat sink, a control board configured to output a control signal to the power modules, and a rotation sensor. The power modules, a column portion of the heat sink, and the control board are arranged in parallel to the axial direction of the output shaft. The rotation sensor is provided in a recess formed in a base portion of the heat sink at an opposite position to a sensor rotor mounted to an end portion of the output shaft on the control unit side.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: October 11, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Takanori Ichikawa, Akira Kimishima, Satoshi Iohara, Takahisa Kawaguchi, Kentaro Urimoto
  • Patent number: 11435238
    Abstract: A temperature detection device includes: a detection processing unit configured to transmit a transmission radio wave, simultaneously receive a response radio wave corresponding to the transmission radio wave, and detect whether a temperature of an object to be measured is normal or abnormal based on the response radio wave; and a temperature sensing unit configured to receive the transmission radio wave and transmit the response radio wave responding to the transmission radio wave. The detection processing unit calculates, from the response radio wave received via a second antenna, an amplitude, a phase, or a quadrature phase amplitude of the response radio wave and compares the temperature of the object to be measured to a temperature determined in advance based on a result of the calculation.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: September 6, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Kenzo Makino, Hideaki Arita, Masaya Inoue, Junji Hori, Hiroshi Araki, Yoshitsugu Sawa, Wataru Tsujita
  • Patent number: 11378984
    Abstract: A vessel-azimuth control apparatus is configured in such a way that an azimuth controller generates and outputs an angular velocity command, based on an azimuth command from an azimuth command generator and an actual azimuth, in such a way that an angular velocity controller generates and outputs a steering angle command, based on the angular velocity command, a vessel speed, and an actual angular velocity, and in such a way that a vibration suppression controller outputs a final steering angle command, based on the steering angle command.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: July 5, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Naoki Imamura, Ryo Sakaguchi
  • Patent number: 11364948
    Abstract: There is provided an electric power steering device, including: a reverse steering detection unit configured to determine start of reverse steering when a magnitude of a rotational speed of a motor is equal to or smaller than a set speed, a rotational acceleration of the motor is in a direction of causing the rotational speed of the motor to become 0, and a magnitude of the rotational acceleration of the motor is equal to or larger than a set acceleration; and a current command control unit configured to output a current command for the motor based on the steering torque or the rotational speed of the motor, in which the current command control unit is configured to increase a transfer gain from input to output by the current command control unit when the reverse steering detection unit determines start of the reverse steering.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: June 21, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Isao Kezobo, Kenta Tanaka, Akira Furukawa, Masaharu Tanaka, Akiyoshi Takashima
  • Patent number: 11365985
    Abstract: Provided is a rotation detection device including: a power supply unit configured to output constant power supply; a rotation sensor unit configured to output a detection signal that depends on rotation of a vehicle; a controller configured to calculate on-time rotation information on the vehicle, which is information at a time when an ignition switch is on, to control a motor; and a calculation unit configured to calculate off-time rotation information on the vehicle by intermittently supplying a power supply voltage to the rotation sensor unit when the ignition switch is off, update a set value of an intermittent interval so that the set value becomes smaller when the off-time rotation information contains information indicating rotation of a motor for the vehicle, and otherwise update the set value of the intermittent interval so that the set value becomes larger.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: June 21, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Yu Kawano, Satoshi Iohara
  • Patent number: 11338844
    Abstract: An electric power steering apparatus includes a high-frequency compensation unit that outputs a high-frequency compensation signal obtained by filtering the high-frequency components of an assist torque command signal and multiplying the filtered high-frequency components by a gain; a corrected steering torque signal obtained by negatively or positively feeding back the high-frequency compensation signal to a steering torque signal is inputted to an assist torque command calculation unit; the assist torque command calculation unit outputs the assist torque command signal in accordance with the corrected steering torque signal.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: May 24, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventors: Isao Kezobo, Kenta Tanaka, Masaharu Tanaka, Akiyoshi Takashima
  • Patent number: 11329584
    Abstract: A control device applies voltages to an AC rotating machine based on voltage command values on stationary coordinates. Currents in a plurality phases flowing the rotating machine are detected as detection currents. Coordinate conversion is applied to those detection currents based on any phase in the rotating machine, for generate detection currents on rotational coordinates. Voltage command values on the rotational coordinates are generated based on current command values on the rotational coordinates and the detection currents. Coordinate conversion is applied to those voltage command values based on the any phase, for generate first voltage command values on the stationary coordinates. Phases of one of the first voltage command values and generated second voltage command values on the stationary coordinates are corrected to generate the second voltage command values. One of the second and the first voltage command values are selected as the voltage command values on the stationary coordinates.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: May 10, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventor: Akira Furukawa
  • Patent number: 11277055
    Abstract: An automotive alternator rotor includes: a pair of magnetic pole cores; a field coil that is disposed on the magnetic pole cores; and a cooling fan that is fixed to the magnetic pole cores. The cooling fan includes: a base portion that is fixed to an axial end surface of the magnetic pole cores; and a plurality of vane portions that protrude axially from the base portion. A jamming suppressing portion that suppresses jamming together of cooling fans when one of the cooling fans is stacked on another of the cooling fans is disposed on the base portion.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: March 15, 2022
    Assignee: Mitsubishi Electric Cornoration
    Inventor: Shiro Iizuka