Patents by Inventor Kensuke Yoshizue

Kensuke Yoshizue 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: 20200189656
    Abstract: Provided is a vehicle including a plurality of wheels, a steering device, and a direction indication system. The steering device is configured to steer the wheels at least either to such a first steering angle that the vehicle travels straight in a direction intersecting the front-rear direction or to such a second steering angle that the vehicle rotates around a vertical axis passing through a central portion of the vehicle body. The direction indication system is configured to, when the steering device steers the wheels to either the first steering angle or the second steering angle, indicate toward the outside of the vehicle body that the vehicle is going to travel straight in a direction intersecting the front-rear direction or that the vehicle is going to rotate around the vertical axis passing through the central portion of the vehicle body.
    Type: Application
    Filed: August 8, 2019
    Publication date: June 18, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshihiko HIROE, Masaki OKAMURA, Kensuke YOSHIZUE
  • Patent number: 10483897
    Abstract: A switched reluctance motor system includes a switched reluctance motor, a rotor including a plurality of salient poles, a stator including a plurality of salient poles, coils of three phases wound around the salient poles of the stator, and an electronic control unit. The electronic control unit is configured to drive the switched reluctance motor in a pole configuration pattern of NSNSNS in which the salient poles of the stator that have different polarities are alternately arranged. The electronic control unit is configured to perform current waveform control when an excitation sound frequency of a given order coincides with a resonance frequency of the switched reluctance motor.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: November 19, 2019
    Assignees: TOYOTA JIDOSHA KABUSHII KAISHA, Tokyo University of Science Foundation
    Inventors: Junichi Deguchi, Takahiro Shiina, Kensuke Yoshizue, Nobukazu Hoshi, Yusuke Kobayashi, Yosuke Murakami, Tomoya Abe
  • Patent number: 10418867
    Abstract: A switched reluctance motor include: a stator; a case in which the stator is accommodated; a rotor disposed inward of the stator in the radial direction of the switched reluctance motor; and a holding member fixed to the case. The holding member is configured to hold the stator with the stator spaced apart from an inner peripheral surface of the case. The holding member includes a holding portion and a fixed portion. The holding portion is configured to hold the stator from the outside in the radial direction. The holding portion is spaced apart from the inner peripheral surface of the case. The fixed portion is fixed to the case.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kensuke Yoshizue, Kazuya Arakawa, Junichi Deguchi, Masahide Uemura
  • Publication number: 20180309401
    Abstract: A switched reluctance motor system includes a switched reluctance motor, a rotor including a plurality of salient poles, a stator including a plurality of salient poles, coils of three phases wound around the salient poles of the stator, and an electronic control unit. The electronic control unit is configured to drive the switched reluctance motor in a pole configuration pattern of NSNSNS in which the salient poles of the stator that have different polarities are alternately arranged. The electronic control unit is configured to perform current waveform control when an excitation sound frequency of a given order coincides with a resonance frequency of the switched reluctance motor.
    Type: Application
    Filed: April 19, 2018
    Publication date: October 25, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo University of Science Foundation
    Inventors: Junichi DEGUCHI, Takahiro SHIINA, Kensuke YOSHIZUE, Nobukazu HOSHI, Yusuke KOBAYASHI, Yosuke MURAKAMI, Tomoya ABE
  • Patent number: 10110153
    Abstract: An electronic control unit switches a switching circuit such that a switched reluctance motor has a first winding pattern, when, with respect to a boundary dividing a driving range of the switched reluctance motor into two ranges, a torque and a rotational speed of the switched reluctance motor that are determined according to an applied voltage are located in the first range on the low load side. The electronic control unit switches the switching circuit such that the switched reluctance motor has a second winding pattern, when the torque and the rotational speed of the switched reluctance motor are located in a second range different from the first range.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 23, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junichi Deguchi, Makoto Funahashi, Kensuke Yoshizue
  • Patent number: 10056859
    Abstract: A control device for a switched reluctance motor includes an inverter having a switching circuit that switches a magnetic pole to provide a first winding pattern or a second winding pattern. With respect to a boundary dividing a driving range of the switched reluctance motor into two ranges, the control device performs switching to the first winding pattern when the torque and the rotational speed are located in the first range on the low load side, performs switching to the second winding pattern when the torque and the rotational speed are located in the second range, allows switching of the magnetic pole in a case where a current of the phase whose magnetic pole is to be switched among the three-phase coils is 0, and prohibits switching of the magnetic pole in a case where the current of the phase whose magnetic pole is to be switched is not 0.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: August 21, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junichi Deguchi, Takahiro Shiina, Kensuke Yoshizue
  • Publication number: 20180152130
    Abstract: A control device for a switched reluctance motor includes an inverter having a switching circuit that switches a magnetic pole to provide a first winding pattern or a second winding pattern. With respect to a boundary dividing a driving range of the switched reluctance motor into two ranges, the control device performs switching to the first winding pattern when the torque and the rotational speed are located in the first range on the low load side, performs switching to the second winding pattern when the torque and the rotational speed are located in the second range, allows switching of the magnetic pole in a case where a current of the phase whose magnetic pole is to be switched among the three-phase coils is 0, and prohibits switching of the magnetic pole in a case where the current of the phase whose magnetic pole is to be switched is not 0.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 31, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junichi DEGUCHI, Takahiro SHIINA, Kensuke YOSHIZUE
  • Publication number: 20180102722
    Abstract: In a control device for a switched reluctance motor, a voltage drop control is executed in which a voltage dropped to be lower than a voltage applied in a case where the switched reluctance motor is driven in a high-load region is applied to the switched reluctance motor, in a case where the switched reluctance motor is driven in a low-load region. The low-load region is a lower load region than the high-load region.
    Type: Application
    Filed: October 2, 2017
    Publication date: April 12, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo University of Science Foundation
    Inventors: Junichi DEGUCHI, Makoto FUNAHASHI, Kensuke YOSHIZUE, Nobukazu HOSHI, Tomoya ABE, Yusuke KOBAYASHI, Yosuke MURAKAMI
  • Publication number: 20180062554
    Abstract: An electronic control unit switches a switching circuit such that a switched reluctance motor has a first winding pattern, when, with respect to a boundary dividing a driving range of the switched reluctance motor into two ranges, a torque and a rotational speed of the switched reluctance motor that are determined according to an applied voltage are located in the first range on the low load side. The electronic control unit switches the switching circuit such that the switched reluctance motor has a second winding pattern, when the torque and the rotational speed of the switched reluctance motor are located in a second range different from the first range.
    Type: Application
    Filed: August 10, 2017
    Publication date: March 1, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junichi DEGUCHI, Makoto FUNAHASHI, Kensuke YOSHIZUE
  • Publication number: 20170187315
    Abstract: A control device for a switched reluctance motor includes: a switching controller configured to execute switching control to switch drive control of the switched reluctance motor between a first control mode for reducing torque fluctuations and a second control mode for reducing fluctuations of a radial force based on rotational speed and a torque of the switched reluctance motor; a first controller configured to execute first control to cause an excitation current with a current waveform for reducing the torque fluctuations to flow through the coils; and a second controller configured to execute second control to cause an excitation current with a current waveform for reducing the radial force fluctuations to flow through the coils.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 29, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jun-ichi DEGUCHI, Kazuya ARAKAWA, Kensuke YOSHIZUE, Nobukazu HOSHI, Keiichi SHIBUYA, Yusuke KOBAYASHI
  • Publication number: 20170126078
    Abstract: A switched reluctance motor include: a stator; a case in which the stator is accommodated; a rotor disposed inward of the stator in the radial direction of the switched reluctance motor; and a holding member fixed to the case. The holding member is configured to hold the stator with the stator spaced apart from an inner peripheral surface of the case. The holding member includes a holding portion and a fixed portion. The holding portion is configured to hold the stator from the outside in the radial direction. The holding portion is spaced apart from the inner peripheral surface of the case. The fixed portion is fixed to the case.
    Type: Application
    Filed: June 9, 2015
    Publication date: May 4, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kensuke YOSHIZUE, Kazuya ARAKAWA, Junichi DEGUCHI, Masahide UEMURA
  • Patent number: 9641118
    Abstract: A vehicular control apparatus that includes a switched reluctance motor and an electronic control unit is provided. The switched reluctance motor has a rotor and a stator and is mounted as a travel drive source in a vehicle. The electronic control unit executes current control of the switched reluctance motor. The electronic control unit executes first current control for causing the rotor to rotate in a reverse direction from a rotational direction in which the vehicle is started in the case where the vehicle is not started even when the switched reluctance motor outputs maximum torque within an allowable range, and executes control for causing the rotor to rotate in the rotational direction in which the vehicle is started after the rotor rotates in the reverse direction by the first current control to a rotation position at which torque for enabling a start of the vehicle can be output.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: May 2, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junichi Deguchi, Kazuya Arakawa, Kensuke Yoshizue
  • Patent number: 9515596
    Abstract: A switched reluctance motor includes: a stator provided with a plurality of stator teeth as salient poles in a radial fashion with winding wire wound around each of the plurality of stator teeth; a rotor provided with a plurality of rotor teeth as salient poles in a radial fashion; a driving circuit configured to apply a current to the winding wire for each phase; and a control device configured to control the driving circuit, the control device being configured to perform: starting rising of a current to the winding wire of a stator tooth of a phase being a non-excitation target due to stop of energization to the winding wire; and allowing the current applied to the winding wire of the stator tooth of a phase being an excitation target to fall.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: December 6, 2016
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Jun-ichi Deguchi, Kazuya Arakawa, Kensuke Yoshizue, Nobukazu Hoshi, Noboru Nakayama, Takuya Iguchi
  • Patent number: 9473061
    Abstract: A switched reluctance motor includes: a stator provided with a plurality of stator teeth as salient poles in a radial fashion with winding wire wound around each of the plurality of stator teeth; a rotor provided with a plurality of rotor teeth as salient poles in a radial fashion; a driving circuit configured to apply a current to the winding wire for each phase; and a control device configured to control the driving circuit, the control device being configured to perform: starting rising of a current to the winding wire of a stator tooth of a phase being a non-excitation target due to stop of energization to the winding wire; and allowing the current applied to the winding wire of the stator tooth of a phase being an excitation target to fall.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: October 18, 2016
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Jun-ichi Deguchi, Kazuya Arakawa, Kensuke Yoshizue, Nobukazu Hoshi, Noboru Nakayama, Takuya Iguchi
  • Publication number: 20160211788
    Abstract: A vehicular control apparatus that includes a switched reluctance motor and an electronic control unit is provided. The switched reluctance motor has a rotor and a stator and is mounted as a travel drive source in a vehicle. The electronic control unit executes current control of the switched reluctance motor. The electronic control unit executes first current control for causing the rotor to rotate in a reverse direction from a rotational direction in which the vehicle is started in the case where the vehicle is not started even when the switched reluctance motor outputs maximum torque within an allowable range, and executes control for causing the rotor to rotate in the rotational direction in which the vehicle is started after the rotor rotates in the reverse direction by the first current control to a rotation position at which torque for enabling a start of the vehicle can be output.
    Type: Application
    Filed: January 12, 2016
    Publication date: July 21, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Junichi DEGUCHI, Kazuya ARAKAWA, Kensuke YOSHIZUE
  • Publication number: 20160043681
    Abstract: A switched reluctance motor includes: a stator provided with a plurality of stator teeth as salient poles in a radial fashion with winding wire wound around each of the plurality of stator teeth; a rotor provided with a plurality of rotor teeth as salient poles in a radial fashion; a driving circuit configured to apply a current to the winding wire for each phase; and a control device configured to control the driving circuit, the control device being configured to perform: starting rising of a current to the winding wire of a stator tooth of a phase being a non-excitation target due to stop of energization to the winding wire; and allowing the current applied to the winding wire of the stator tooth of a phase being an excitation target to fall.
    Type: Application
    Filed: July 17, 2015
    Publication date: February 11, 2016
    Applicants: Toyota Jidosha Kabushiki Kaisha, Tokyo University of Science Foundation
    Inventors: Jun-ichi DEGUCHI, Kazuya ARAKAWA, Kensuke YOSHIZUE, Nobukazu HOSHI, Noboru NAKAYAMA, Takuya IGUCHI
  • Patent number: 9112391
    Abstract: A motor cooling device having good cooling performance, which is adapted to promote heat transfer between a coil end and a coil end cover even if the flowing amount of oil is small. A heat of a stator is withdrawn by the oil flowing around the coil end. For this purpose, the motor cooling device comprises a flow path formed between an outer face of the coil end and an inner face of the coil end cover, and a flow rate adjusting unit for changing a cross-sectional area of the flow path by moving the coil end cover toward the coil end or away from the coil end. The flow rate adjusting unit widens the cross-sectional area of the flow path in case a feeding amount of the oil to the flow path is relatively large, and narrows the cross-sectional area of the flow path in case a feeding amount of the oil to the flow path is relatively small.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: August 18, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jun-ichi Deguchi, Kazuya Arakawa, Kensuke Yoshizue
  • Patent number: 8783390
    Abstract: A vehicle drive apparatus independently controls drive forces for a front-right drive wheel, a front-left drive wheel, a rear-right drive wheel, and a rear-left drive wheel using a front-right electric motor, a front-left electric motor, a rear-right electric motor, and a rear-left electric motor, respectively. The drive forces for the drive wheels of a vehicle incorporating the vehicle drive apparatus are determined based on the target moments in the yaw and roll directions of the vehicle, the total drive for the drive wheels, and the drive reaction forces at the drive wheels. Thus, the performance desired by the driver can be achieved, and the drivability therefore improves accordingly.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: July 22, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshinori Maeda, Akihiro Hosokawa, Yousuke Suzuki, Michitaka Tsuchida, Kazuya Okumura, Tadahiro Oshiumi, Kensuke Yoshizue, Koji Sugiyama
  • Patent number: 8714663
    Abstract: A target braking-driving force Fvn and a target yaw moment Mvn of the entire vehicle are calculated, and when the target braking-driving force Fvn and the target yaw moment Mvn cannot be achieved by the braking-driving forces of the front wheels, a target braking-driving force Fvft and a target yaw moment Mvft of the front wheels are adjusted such that the magnitudes of the braking-driving force and yaw moment of the vehicle produced by the braking-driving forces of the front wheels become the maximum at a ratio between Fvn and Mvn. A target braking-driving force Fvrt and a target yaw moment Mvrt of the rear wheels are calculated on the basis of Fvn, Mvn, Fvft, and Mvft, and similar adjustment is performed for them when necessarily.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: May 6, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshinori Maeda, Yasuhiro Oshiumi, Michitaka Tsuchida, Kazuya Okumura, Kensuke Yoshizue, Akihiro Hosokawa, Koji Sugiyama
  • Patent number: 8655563
    Abstract: In a braking/driving force control apparatus, a vehicle target braking/driving force and a vehicle target yaw moment through the control of braking/driving forces of wheels are calculated, and when the target braking/driving force and the target yaw moment cannot be achieved through the control of the braking/driving forces of the wheels, the vehicle target braking/driving force after the modification and the vehicle target yaw moment after the modification are calculated such that, within the range where the ratio of the vehicle target braking/driving force after the modification and the vehicle target yaw moment after the modification coincides with the ratio of the target braking/driving force and the target yaw moment, the vehicle braking/driving force and the vehicle yaw moment by the target braking/driving forces of the wheels take the greatest values.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: February 18, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshinori Maeda, Kazuya Okumura, Michitaka Tsuchida, Yoshio Uragami, Kensuke Yoshizue, Satoshi Ando, Koji Sugiyama