Patents by Inventor Nobuhide Mori

Nobuhide Mori 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).

  • Patent number: 10053097
    Abstract: An object of this invention is to obtain a vehicle control apparatus with which departure over a bump can be identified accurately, and when departure over the bump is identified, a required driving force can be controlled to an appropriate value. A departure over bump identification unit identifies departure over a bump, in which an electric vehicle travels over the bump in order to depart, when a motor rotation speed is equal to or lower than a predetermined first rotation speed and an accelerator pedal depression amount remains at or above a predetermined accelerator pedal depression amount continuously for a predetermined first period, and a drive control unit sets a required driving force of a motor at zero, regardless of the accelerator pedal depression amount, and then increases the required driving force at a constant speed, when departure over the bump is identified.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 21, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Nobuhide Mori, Keiichi Enoki
  • Patent number: 9845089
    Abstract: The control device for a hybrid vehicle includes: a mechanical power source; an electric motor to be used when the mechanical power source is started; a first clutch arranged between the mechanical power source and a first transmission mechanism including a plurality of gear shift stages; a second clutch arranged between the mechanical power source and a second transmission mechanism including a plurality of gear shift stages; an electrical power source coupled to an input shaft of the first transmission mechanism; and a control unit for controlling a torque of at least one of the second clutch or the electric motor so as to compensate a braking force decreased upon a gear shift in the electrical power source when a gear shift request for shifting the gear shift stage of the first transmission mechanism is made during a regeneration travel of the electrical power source.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: December 19, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kotaro Nakano, Keiichi Enoki, Nobuhide Mori, Hiroyuki Kobayashi, Yasufumi Ogawa
  • Patent number: 9688280
    Abstract: In order to provide a traction control device capable of preventing an initial slip at a start, the traction control device includes a drive power source outputting drive power to a drive wheel of a vehicle; a vehicle speed sensor detecting the wheel speed of a non-drive wheel of the vehicle; and target restricted speed generating means for generating a target restricted speed for the vehicle by determining the state of a road surface from target drive torque of the vehicle, the wheel speed of the non-drive wheel, and a signal indicating the extent of operation of an accelerator by a driver. The target restricted speed generated by the target restricted speed generating means is switched stepwise in a speed region where the speed of the drive wheel is not detected in correspondence with a control mode that is classified according to the slipperiness of a road surface.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: June 27, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Kobayashi, Masahiro Iezawa, Keiichi Enoki, Nobuhide Mori, Yasufumi Ogawa, Kotaro Nakano
  • Patent number: 9641107
    Abstract: A motor controller for an electric vehicle sufficiently reduces vibration components caused by torque ripples passing through a resonance frequency of a vehicle body. The motor controller includes motor torque setting means for generating a first torque command, based on vehicle information, rotation position detection means for detecting a rotation position of the motor, rotation speed calculation means for calculating a rotation speed from a rotation position signal, a high-pass filter that extracts an AC signal component of a rotation speed signal, and a resonance suppression gain circuit that outputs a resonance suppression signal. A signal in which the resonance suppression signal is added to or subtracted from the first torque command is used as a second torque command so as to perform drive control for the motor.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: May 2, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keiichi Enoki, Masahiro Iezawa, Nobuhide Mori, Yasufumi Ogawa, Hiroyuki Kobayashi
  • Patent number: 9623753
    Abstract: A vehicle control part includes: a vehicle stop determination part for determining whether or not the vehicle is stopped; a clutch control part for disengaging the clutch when stop of the vehicle is determined; a motor control part for driving the motor so as to drive the oil circulation part after the clutch is disengaged; and a motor magnet temperature estimation part for detecting an inducted voltage generated by drive of the motor, and estimating a magnet temperature of the motor from the detected induced voltage of the motor. The motor control part continues the drive of the motor when the estimated magnet temperature of the motor is higher than a predetermined reference temperature at which the motor needs to be cooled, and stops the drive of the motor when the magnet temperature of the motor is equal to or lower than the predetermined reference temperature.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: April 18, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Nobuhide Mori, Keiichi Enoki, Hiroyuki Kobayashi, Yasufumi Ogawa, Kotaro Nakano
  • Patent number: 9628017
    Abstract: In order to highly accurately estimate a temperature of a permanent magnet to be used for a rotor of a motor, provided is a motor control device for a vehicle including a motor as a drive power source, in which an estimation mode setting section sets, when a predetermined condition for estimating the temperature of the permanent magnet to be used for the rotor of the motor is established under a state in which the motor generates drive power to run the vehicle, a current flowing through the motor to 0, and a permanent magnet temperature estimation section estimates the temperature of the permanent magnet based on an induced voltage of the motor in a period during which the current flowing through the motor is 0.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: April 18, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasufumi Ogawa, Keiichi Enoki, Nobuhide Mori, Hiroyuki Kobayashi
  • Publication number: 20160325748
    Abstract: An object of this invention is to obtain a vehicle control apparatus with which departure over a bump can be identified accurately, and when departure over the bump is identified, a required driving force can be controlled to an appropriate value. A departure over bump identification unit identifies departure over a bump, in which an electric vehicle travels over the bump in order to depart, when a motor rotation speed is equal to or lower than a predetermined first rotation speed and an accelerator pedal depression amount remains at or above a predetermined accelerator pedal depression amount continuously for a predetermined first period, and a drive control unit sets a required driving force of a motor at zero, regardless of the accelerator pedal depression amount, and then increases the required driving force at a constant speed, when departure over the bump is identified.
    Type: Application
    Filed: March 13, 2014
    Publication date: November 10, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Nobuhide MORI, Keiichi ENOKI
  • Publication number: 20160167662
    Abstract: In order to provide a traction control device capable of preventing an initial slip at a start, the traction control device includes a drive power source outputting drive power to a drive wheel of a vehicle; a vehicle speed sensor detecting the wheel speed of a non-drive wheel of the vehicle; and target restricted speed generating means for generating a target restricted speed for the vehicle by determining the state of a road surface from target drive torque of the vehicle, the wheel speed of the non-drive wheel, and a signal indicating the extent of operation of an accelerator by a driver. The target restricted speed generated by the target restricted. speed generating means is switched stepwise in a speed region where the speed of the drive wheel s not detected in correspondence with a control mode that is classified according to the slipperiness of a road surface.
    Type: Application
    Filed: October 31, 2013
    Publication date: June 16, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroyuki KOBAYASHI, Masahiro IEZAWA, Keiichi ENOKI, Nobuhide MORI, Yasufumi OGAWA, Kotaro NAKANO
  • Publication number: 20150367734
    Abstract: A vehicle control part includes: a vehicle stop determination part for determining whether or not the vehicle is stopped; a clutch control part for disengaging the clutch when stop of the vehicle is determined; a motor control part for driving the motor so as to drive the oil circulation part after the clutch is disengaged; and a motor magnet temperature estimation part for detecting an inducted voltage generated by drive of the motor, and estimating a magnet temperature of the motor from the detected induced voltage of the motor. The motor control part continues the drive of the motor when the estimated magnet temperature of the motor is higher than a predetermined reference temperature at which the motor needs to be cooled, and stops the drive of the motor when the magnet temperature of the motor is equal to or lower than the predetermined reference temperature.
    Type: Application
    Filed: April 11, 2013
    Publication date: December 24, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Nobuhide MORI, Keiichi ENOKI, Hiroyuki KOBAYASHI, Yasufumi OGAWA, Kotaro NAKANO
  • Publication number: 20150360676
    Abstract: The control device for a hybrid vehicle includes: a mechanical power source; an electric motor to be used when the mechanical power source is started; a first clutch arranged between the mechanical power source and a first transmission mechanism including a plurality of gear shift stages; a second clutch arranged between the mechanical power source and a second transmission mechanism including a plurality of gear shift stages; an electrical power source coupled to an input shaft of the first transmission mechanism; and a control unit for controlling a torque of at least one of the second clutch or the electric motor so as to compensate a braking force decreased upon a gear shift in the electrical power source when a gear shift request for shifting the gear shift stage of the first transmission mechanism is made during a regeneration travel of the electrical power source.
    Type: Application
    Filed: April 23, 2013
    Publication date: December 17, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kotaro NAKANO, Keiichi ENOKI, Nobuhide MORI, Hiroyuki KOBAYASHI, Yasufumi OGAWA
  • Publication number: 20150222216
    Abstract: In order to highly accurately estimate a temperature of a permanent magnet to be used for a rotor of a motor, provided is a motor control device for a vehicle including a motor as a drive power source, in which an estimation mode setting section sets, when a predetermined condition for estimating the temperature of the permanent magnet to be used for the rotor of the motor is established under a state in which the motor generates drive power to run the vehicle, a current flowing through the motor to 0, and a permanent magnet temperature estimation section estimates the temperature of the permanent magnet based on an induced voltage of the motor in a period during which the current flowing through the motor is 0.
    Type: Application
    Filed: October 11, 2012
    Publication date: August 6, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasufumi Ogawa, Keiichi Enoki, Nobuhide Mori, Hiroyuki Kobayashi
  • Publication number: 20150180386
    Abstract: A motor controller for an electric vehicle sufficiently reduces vibration components caused by torque ripples passing through a resonance frequency of a vehicle body. The motor controller includes motor torque setting means for generating a first torque command, based on vehicle information, rotation position detection means for detecting a rotation position of the motor, rotation speed calculation means for calculating a rotation speed from a rotation position signal, a high-pass filter that extracts an AC signal component of a rotation speed signal, and a resonance suppression gain circuit that outputs a resonance suppression signal. A signal in which the resonance suppression signal is added to or subtracted from the first torque command is used as a second torque command so as to perform drive control for the motor.
    Type: Application
    Filed: October 15, 2012
    Publication date: June 25, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Keiichi Enoki, Masahiro Iezawa, Nobuhide Mori, Yasufumi Ogawa, Hiroyuki Kobayashi