Patents by Inventor Naoki Imamura

Naoki Imamura 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).

  • Publication number: 20220340136
    Abstract: A travel mode switching device for a vehicle is provided, which is switchable between a plurality of travel modes including a sport travel mode and a towing travel mode. The device includes a travel mode selection interface that allows a driver to select one of the travel modes, a towing detection sensor that detects a towing state, and a processor configured to execute a travel mode switching module to switch the travel mode to the travel mode selected by the travel mode selection interface, and a travel mode regulating module to regulate the selection of the sport travel mode by the travel mode selection interface when the towing state is detected by the towing detection sensor, and regulate the selection of the towing travel mode by the travel mode selection interface when the towing state is not detected.
    Type: Application
    Filed: April 8, 2022
    Publication date: October 27, 2022
    Inventors: Naoki Nobutani, Yasumasa Imamura, Daisuke Umetsu, Naoki Takata, Juntaro Matsuo
  • Publication number: 20220315193
    Abstract: The objective is to obtain an azimuth control apparatus and an azimuth control method that require no excessive memory capacity and calculation time for information processing and can cope with a disturbance by adaptively adjusting a control gain while calculating changing vessel parameters online. The vessel azimuth control apparatus has an azimuth control unit that outputs a steering-angle command signal for making a vessel turn to an azimuth to which the vessel should travel, based on an azimuth command signal generated by an azimuth command generation unit, a yaw-angle signal, and a yaw-angular-velocity signal, a steering-angle control unit that controls a rudder based on the steering-angle command signal, and a control gain adjustment unit that calculates respective frequency responses of the yaw-angle signal and the yaw-angular-velocity signal to a steering-angle signal outputted by a steering-angle detection unit and then adjusts a control gain of the azimuth control unit.
    Type: Application
    Filed: February 17, 2022
    Publication date: October 6, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Toru IKEGAME, Naoki IMAMURA, Takuya ISHIOKA, Ryo SAKAGUCHI
  • Patent number: 11463028
    Abstract: A sensor (110) detects the angle of the output shaft (101a) of a synchronous motor (101). A multiple rotation processing unit (301) converts the angle of one rotation or more that is detected by the sensor (110) into a multiple rotation angle. A phase difference FB unit (305) performs feedback control in such a way that the phase difference between the electrical angle and the mechanical angle of the synchronous motor (101) is a target phase difference (306). A position FB unit (302) performs feedback control in such a way that the multiple rotation angle after conversion by the multiple rotation processing unit (301) is a target position (303).
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 4, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuya Nishimori, Satoshi Kawamura, Naoki Imamura
  • Patent number: 11458836
    Abstract: A vehicle system includes an engine driving a vehicle, a front wheel and a rear wheel, a suspension device with an attachment portion to a vehicle body which is located at a higher level than a center axis of the rear wheel, an electromagnetic coupling to distribute a torque of the engine to the front wheel and the rear wheel, a steering wheel to be operated by a driver, a steering angle sensor to detect a steering angle corresponding to operation of the steering wheel, and a controller to control the engine and the electromagnetic coupling. The controller is configured to control the electromagnetic coupling such that the torque distributed to the rear wheel is decreased in accordance with a returning operation of the steering wheel which is detected by the steering angle sensor.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: October 4, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasumasa Imamura, Naoki Nobutani, Daisuke Umetsu
  • Publication number: 20220269289
    Abstract: In a conventional vessel anti-rolling apparatus, because a large memory capacity and a high-speed high-function computing processing unit are required, the cost of the vessel anti-rolling apparatus is caused to rise. A vessel anti-rolling control apparatus and an anti-rolling control method according to the present disclosure includes an azimuth controller that outputs a first steering-angle command value for making the vessel turn to an azimuth to which the vessel should travel, based on an azimuth command signal and a yaw-angle signal, an anti-rolling controller that outputs a second steering-angle command value for reducing rolling of the vessel, based on a rolling-angle signal, a rolling-angular-velocity signal, and a vessel-speed signal, and a steering-angle controller that controls a steering angle, based on the first steering-angle command value and the second steering-angle command value.
    Type: Application
    Filed: December 21, 2021
    Publication date: August 25, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki IMAMURA, Ryo Sakaguchi
  • Patent number: 11420618
    Abstract: A driving force control device 1 for a vehicle V comprises: a D-? map M1 defining a linear correlation between a driving stiffness D and a maximum road surface ?; a slip ratio calculation circuit 21 for calculating a slip ratio S of one of a pair of front road wheels 10L, 10R; a DS calculation circuit 22 for calculating the driving stiffness D corresponding to a value the slip ratio S calculated by the slip ratio calculation circuit 21; a maximum road surface ? calculation circuit 23 for assigning a value of the driving stiffness D calculated by the DS calculation circuit 22 to the D-? map M1 to calculate the maximum road surface ?; and a driving force distribution circuit 24 for controlling a driving force, using a value of the maximum road surface ? calculated by the maximum road surface ? calculation circuit 23.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: August 23, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasumasa Imamura, Yasushi Yagi, Tetsushi Marutani, Naoki Nobutani, Daisuke Kofu, Akihiro Tatara
  • 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: 11260996
    Abstract: A lunar orbiting satellite system executes orbit planning of assigning a function (positioning, communication, and flashing) to an artificial satellite (AS) depending on a relative position of the AS to the moon at a time when the moon and the AS are observed from an input point on the earth, and correcting the relative position, which changes in accordance with the moon revolution period. The system includes: a satellite orbit planner which assigns a function to each ASs forming an AS group flying around the moon depending on a relative position of each ASs to the moon at a time when the moon and ASs are observed from an input point on the earth, and set a target orbit according to the function; and a satellite controller which causes the each ASs to execute control based on the function to implement switching of the function.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: March 1, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Naoki Imamura, Shoji Yoshikawa, Kenro Mitsuda, Kazushi Sekine, Kana Tsuneishi, Mitsuhiro Yamazumi
  • Patent number: 11169524
    Abstract: An object is to obtain a heading control device and a heading control method for ship in which a heading control system is configured on the basis of ship motion information, without promoting oscillation excited by disturbance factors to the ship, such as tidal current or wind. The heading control device for ship, which causes a ship provided with an outboard motor to sail at a desired heading, includes: a heading generator which outputs a heading command; and a controller which outputs a rudder angle command on the basis of the heading command from the heading generator, sensor group information from a sensor group, and ship motion characteristic information from a ship motion characteristic information storage unit.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: November 9, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoki Imamura, Ryo Sakaguchi, Daisuke Suzuki
  • Patent number: 11098687
    Abstract: There is provided an engine starting device, including: a motor generator coupled to a crankshaft of an engine; and a starter including a pinion provided in a detachable manner from a ring gear provided on the crankshaft, and configured to mesh with the ring gear when the engine is started, wherein the engine is cranked through simultaneous cranking by both of the motor generator and the starter when a condition set in advance is satisfied, and wherein, in the simultaneous cranking, the starter starts rotating after the motor generator starts rotating.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: August 24, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naohito Kaneda, Naoki Imamura, Koichiro Kamei, Kazuhiro Odahara
  • Publication number: 20210255640
    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: Application
    Filed: June 30, 2020
    Publication date: August 19, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki IMAMURA, Ryo SAKAGUCHI
  • Publication number: 20210078733
    Abstract: A lunar orbiting satellite system executes orbit planning of assigning a function (positioning, communication, and flashing) to an artificial satellite (AS) depending on a relative position of the AS to the moon at a time when the moon and the AS are observed from an input point on the earth, and correcting the relative position, which changes in accordance with the moon revolution period. The system includes: a satellite orbit planner which assigns a function to each ASs forming an AS group flying around the moon depending on a relative position of each ASs to the moon at a time when the moon and ASs are observed from an input point on the earth, and set a target orbit according to the function; and a satellite controller which causes the each ASs to execute control based on the function to implement switching of the function.
    Type: Application
    Filed: May 30, 2017
    Publication date: March 18, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki IMAMURA, Shoji YOSHIKAWA, Kenro MITSUDA, Kazushi SEKINE, Kana TSUNEISHI, Mitsuhiro YAMAZUMI
  • Publication number: 20200200137
    Abstract: There is provided an engine starting device, including: a motor generator coupled to a crankshaft of an engine; and a starter including a pinion provided in a detachable manner from a ring gear provided on the crankshaft, and configured to mesh with the ring gear when the engine is started, wherein the engine is cranked through simultaneous cranking by both of the motor generator and the starter when a condition set in advance is satisfied, and wherein, in the simultaneous cranking, the starter starts rotating after the motor generator starts rotating.
    Type: Application
    Filed: May 8, 2018
    Publication date: June 25, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naohito KANEDA, Naoki IMAMURA, Koichiro KAMEI, Kazuhiro ODAHARA
  • Patent number: 10663539
    Abstract: According to one embodiment, a magnetic resonance imaging apparatus installed in a shield room comprises a gantry, a table, and at least one unit. The gantry includes a static magnetic field magnet, a gradient magnetic field coil, and an RF coil. The subject is to be placed on the table. The at least one unit relates to control of the magnetic resonance imaging apparatus and is configured to include at least one opening on a upper surface on for maintenance and inspection.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 26, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Kazuyuki Soejima, Naoki Imamura, Naho Imamura
  • Publication number: 20200161995
    Abstract: A sensor (110) detects the angle of the output shaft (101a) of a synchronous motor (101). A multiple rotation processing unit (301) converts the angle of one rotation or more that is detected by the sensor (110) into a multiple rotation angle. A phase difference FB unit (305) performs feedback control in such a way that the phase difference between the electrical angle and the mechanical angle of the synchronous motor (101) is a target phase difference (306). A position FB unit (302) performs feedback control in such a way that the multiple rotation angle after conversion by the multiple rotation processing unit (301) is a target position (303).
    Type: Application
    Filed: August 31, 2017
    Publication date: May 21, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuya NISHIMORI, Satoshi KAWAMURA, Naoki IMAMURA
  • Patent number: 10507899
    Abstract: To provide a motion control device for a ship, which does not require adjustment of weights of an performance function, and is less liable to fail in control calculation by building optimization calculation only into a part of classical feedback control, the motion control device, which is configured to cause a ship, on which a plurality of outboard engines are installed, to cruise along a desired trajectory, includes: a trajectory generator configured to output a trajectory command; a controller configured to output a control force command based on the trajectory command and a sensor information group output from a sensor group provided for the ship; and a control force distributor configured to carry out, based on the control force command, optimization calculation for operation amounts required for the plurality of outboard engines in accordance with a constraint condition set in advance so as to output the operation amounts.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: December 17, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoki Imamura, Ryo Sakaguchi, Norihiko Mouri
  • Publication number: 20190324462
    Abstract: An object is to obtain a heading control device and a heading control method for ship in which a heading control system is configured on the basis of ship motion information, without promoting oscillation excited by disturbance factors to the ship, such as tidal current or wind. The heading control device for ship, which causes a ship provided with an outboard motor to sail at a desired heading, includes: a heading generator which outputs a heading command; and a controller which outputs a rudder angle command on the basis of the heading command from the heading generator, sensor group information from a sensor group, and ship motion characteristic information from a ship motion characteristic information storage unit.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 24, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki IMAMURA, Ryo SAKAGUCHI, Daisuke SUZUKI
  • Publication number: 20180290719
    Abstract: To provide a motion control device for a ship, which does not require adjustment of weights of an performance function, and is less liable to fail in control calculation by building optimization calculation only into a part of classical feedback control, the motion control device, which is configured to cause a ship, on which a plurality of outboard engines are installed, to cruise along a desired trajectory, includes: a trajectory generator configured to output a trajectory command; a controller configured to output a control force command based on the trajectory command and a sensor information group output from a sensor group provided for the ship; and a control force distributor configured to carry out, based on the control force command, optimization calculation for operation amounts required for the plurality of outboard engines in accordance with a constraint condition set in advance so as to output the operation amounts.
    Type: Application
    Filed: January 22, 2018
    Publication date: October 11, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki IMAMURA, Ryo SAKAGUCHI, Norihiko MOURI
  • Patent number: 10048337
    Abstract: Image diagnosis apparatus (20) generates image data of an object by using external electric power, and includes a charge/discharge element and a charge/discharge control circuit. The charge/discharge element is charged with the external electric power and supplies part of the consumed power of the image diagnosis apparatus by discharging. The charge/discharge control circuit controls charge and discharge of the charge/discharge element in such a manner that the charge/discharge element discharges in a period during which the consumed power is larger than a predetermined power amount and the charge/discharge element is charged in a period during which the consumed power is smaller than the predetermined power amount.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 14, 2018
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Motohisa Yokoi, Motohiro Miura, Sho Kawajiri, Kazuyuki Soejima, Haruki Nakamura, Naoki Imamura
  • Patent number: 9989602
    Abstract: An MRI apparatus includes a data acquisition system, a charge/discharge element and a power control unit. The data acquisition system acquires nuclear magnetic resonance signals from an imaging region by performing a scan. The charge/discharge element is a part of an electric power system of the MRI apparatus, and is charged with external electric power. The power control unit controls the electric power system in such a manner that at least one unit excluding the data acquisition system is supplied with electric power from the charge/discharge element.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: June 5, 2018
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Naoki Imamura, Motohisa Yokoi, Kazuyuki Soejima, Motohiro Miura, Sho Kawajiri, Haruki Nakamura