Patents by Inventor Yosuke Yamashita

Yosuke Yamashita 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: 20240118639
    Abstract: A thermal treatment apparatus includes a treatment tank including a treatment chamber to perform thermal treatment on toner particles; a toner particle supply unit configured to supply toner particles into the treatment chamber; and a hot air supply unit including a supply port to supply hot air into the treatment chamber. The supply port of the hot air supply unit is disposed on a ceiling of the treatment chamber. The treatment tank further includes: a columnar member that is vertically disposed at the center inside of the treatment chamber; and a protruded member that is disposed at an upper end of the columnar member and has an approximately conical shape protruding toward the ceiling. The columnar member has a cylindrical shape and a radius of curvature RCP (mm) of an upper end edge in a vertical cross-section thereof is 5<RCP<75.
    Type: Application
    Filed: September 29, 2023
    Publication date: April 11, 2024
    Inventors: TAKESHI OHTSU, KOH ISHIGAMI, KOUICHIROU OCHI, YOSUKE IWASAKI, DAISUKE YAMASHITA, HISASUKE KAJIHARA
  • Publication number: 20240088814
    Abstract: When a DC power source fails, the following controls are performed. The normal control is resumed when an inverter input voltage recovers before a standby period elapses after a power failure time. A power source relay is turned off when the standby period elapses without recovery of the voltage. The power source relay is turned on again when a power source relay off period has elapsed from a turn-off time. The normal control is resumed when the inverter input voltage recovers at the turn-on time. The normal control is resumed when the inverter input voltage recovers before the power source relay on period elapses from the turn-on time. The power source relay is turned off, and driving of the actuator is stopped, when the power source relay on period passes without recovery of the voltage.
    Type: Application
    Filed: November 16, 2023
    Publication date: March 14, 2024
    Inventors: Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Tomoaki YOSHIMI, Toyohiro HAYASHI, Yosuke YAMASHITA, Shintaro TAKAYAMA, Yuuta KAJISAWA, Yuji FUJITA
  • Patent number: 11919579
    Abstract: A power supply system includes a system control unit, an auxiliary power supply, and an auxiliary-power-supply control unit. The system control unit and the auxiliary-power-supply control unit are configured such that information of at least one control unit of the system control unit and the auxiliary-power-supply control unit is able to be output to another control unit of the system control unit and the auxiliary-power-supply control unit. The at least one control unit is configured to output information indicating that an operation of the at least one control unit is stopped to the other control unit when the at least one control unit stops the operation of the at least one control unit.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: March 5, 2024
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuma Hasegawa, Toshihiro Takahashi, Yuji Fujita, Kenichi Abe, Yugo Nagashima, Yuuta Kajisawa, Takashi Koudai, Hiroaki Hanzawa, Atsushi Satou, Yosuke Yamashita, Shintaro Takayama, Tokuaki Hibino
  • Publication number: 20240025473
    Abstract: A steering control system that controls a steering device of a vehicle includes a storage unit, and a control unit configured to make a state transition to a normal control state via a start-up state after a power source system of the vehicle is started. In the start-up state, the control unit executes a correction information storing process of acquiring correction element information using a state variable obtained from the steering device and writing correction information obtained based on the correction element information into the storage unit. In the start-up state, the control unit is configured to execute an abnormal condition determination process of determining whether an abnormal condition indicating that the correction information is abnormal is met. The correction information storing process is re-executed when the abnormal condition is met. The abnormal condition determination process is executed at least either before or after the correction information storing process.
    Type: Application
    Filed: July 14, 2023
    Publication date: January 25, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takashi KOUDAI, Yuji FUJITA, Yugo NAGASHIMA, Kazuma HASEGAWA, Yuuta KAJISAWA, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Shintaro TAKAYAMA, Takeshi IWANA, Toyohiro HAYASHI, Hayaki TANABE, Nobuyori NAKAJIMA, Hiroki TOMIZAWA
  • Publication number: 20240010267
    Abstract: A steering control device includes a first reaction force control circuit and a second reaction force control circuit. Each of the first reaction force control circuit and the second reaction force control circuit are configured to control a reaction force motor, to execute, at a starting time, a preparation process including a process that requires the steering wheel to automatically rotate through the reaction force motor, and to store, at a time of execution completion of the preparation process, information indicating whether the preparation process has been normally completed. In a case where the first reaction force control circuit has been reset, when the information indicates that the preparation process has been normally completed, the first reaction force control circuit that has been rest is configured to not execute the preparation process at a time of restarting after completion of the reset.
    Type: Application
    Filed: July 3, 2023
    Publication date: January 11, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Kaishi MONOBE, Yuji FUJITA, Kazuma HASEGAWA, Yuuta KAJISAWA, Yugo NAGASHIMA, Takashi KOUDAI, Kenichi ABE, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Hayaki TANABE, Takeshi IWANA
  • Publication number: 20240010269
    Abstract: A steering control system includes a plurality of control circuits configured to control a reaction force motor and a turning motor in coordination with one another, the reaction force motor generating a steering reaction force applied to a steering wheel from which power transmission to turning wheels of a vehicle is cut off, the turning motor generating a turning force for turning the turning wheels. When at least one control circuit among the control circuits that are operating normally is reset, the reset control circuit is configured to execute a process for stopping travel of the vehicle upon restarting after completion of the reset.
    Type: Application
    Filed: July 7, 2023
    Publication date: January 11, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yugo NAGASHIMA, Yuji FUJITA, Yuuta KAJISAWA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Hayaki TANABE, Takeshi IWANA
  • Publication number: 20240001949
    Abstract: A vehicle control device includes a driving control device configured to be supplied with electricity through a first power line and configured to execute a first process, and a steering control device configured to be supplied with electricity through a second power line and configured to execute a second process. The steering control device is configured such that, in a case where it is determined that power supply through the second power line has stopped during travel, when it is determined that the driving control device is not in a state of being able to execute the first process, the steering control device permits execution of the second process to stop, whereas when it is determined that the driving control device is in a state of being able to execute the first process, the steering control device does not permit execution of the second process to stop.
    Type: Application
    Filed: June 28, 2023
    Publication date: January 4, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yugo NAGASHIMA, Yuji FUJITA, Yuuta KAJISAWA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Hayaki TANABE, Takeshi IWANA
  • Publication number: 20230415758
    Abstract: An electric power source apparatus includes a drive control apparatus and an auxiliary control apparatus. The drive control apparatus and the auxiliary control apparatus are configured to communicate with each other. When one of the drive control apparatus and the auxiliary control apparatus is a first control apparatus and the other of the drive control apparatus and the auxiliary control apparatus is a second control apparatus, the first control apparatus is configured to continue a function to communicate with the second control apparatus even when the first control apparatus is not able to normally communicate with the second control apparatus, and configured to execute communication with the second control apparatus when the first control apparatus is put into a state where the first control apparatus is able to normally communicate with the second control apparatus.
    Type: Application
    Filed: June 23, 2023
    Publication date: December 28, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yuuta KAJISAWA, Yuji FUJITA, Kazuma HASEGAWA, Yugo NAGASHIMA, Takashi KOUDAI, Daiki INABA, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Takeshi IWANA, Hayaki TANABE, Nobuyori NAKAJIMA, Hiroki TOMIZAWA
  • Publication number: 20230415586
    Abstract: A power supply device includes a driving control device and an auxiliary control device, the vehicle including a main power source, an auxiliary power source, and a supply path, the supply path being a path configured to be opened and closed according to a state of a start switch of the vehicle. The driving control device is a device that controls a state of equipment installed in the vehicle and the auxiliary control device is a device that controls a state of the auxiliary power source. The driving control device is configured to execute a storage process, a permission signal transmission process, and an initial value process, and the auxiliary control device is configured to execute a permission signal reception process and a stop process.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yuuta KAJISAWA, Yuji FUJITA, Yugo NAGASHIMA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Takeshi IWANA, Hayaki TANABE, Nobuyori NAKAJIMA, Hiroki TOMIZAWA
  • Publication number: 20230365187
    Abstract: A vehicle control device includes: dual-system control circuits that control power supply to dual-system winding sets of a motor; and dual-system rotation detection circuits. The control circuits calculate an absolute rotation angle of the motor, and, when a power source is turned off, store an absolute rotation angle of the motor at that time. The control circuits start when the power source is turned on and the absolute value of a difference between an absolute rotation angle that was stored when the power source was turned off last time and an absolute rotation angle that is calculated when the power source is turned on this time is equal to or smaller than a given threshold value, regardless of whether an abnormality has occurred in one of the dual-system rotation detection circuits or an abnormality of the dual-system rotation detection circuits is not determinable.
    Type: Application
    Filed: May 2, 2023
    Publication date: November 16, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Kazuma HASEGAWA, Yuji FUJITA, Yuuta KAJISAWA, Yugo NAGASHIMA, Takashi KOUDAI, Masaharu YAMASHITA, Atsushi SATOU, Yosuke YAMASHITA, Kazuaki IIDA, Hiroyuki KATAYAMA, Shintaro TAKAYAMA, Toyohiro HAYASHI, Hiroki TOMIZAWA, Nobuyori NAKAJIMA
  • Publication number: 20230339537
    Abstract: A steering control device is configured to control a steering device that changes a transmission ratio between an operation angle of an operation member and a steering angle of a steerable wheel. The steering control device includes: communication lines for transmitting vehicle speed information; and calculators communicably connected to each other and individually connected to the communication lines. Each calculator calculates the transmission ratio based on the vehicle speed information received via a corresponding one of the communication lines and determines whether the received vehicle speed information is valid.
    Type: Application
    Filed: April 21, 2023
    Publication date: October 26, 2023
    Applicants: Toyota Jidosha Kabushiki Kaisha, JTEKT CORPORATION
    Inventors: Yosuke YAMASHITA, Masaharu YAMASHITA, Kenji SHIBATA, Koichi NISHIMURA, Takahito ISHINO, Toru TAKASHIMA, Shintaro TAKAYAMA, Yuji FUJITA, Koji ANRAKU, Kenichi ABE
  • Publication number: 20230303159
    Abstract: A turning control device includes a precursor detection circuit configured to detect a precursor of an abnormality by which a smooth operation of a turning device is impaired. The precursor detection circuit is configured to start measurement of a total running time of a vehicle when the precursor is detected, and is configured to execute a process of reporting the precursor, based on the measured total running time. The precursor detection circuit is configured to perform the measurement of the total running time regardless of whether the precursor is detected again, when a vehicle electric power source is switched off and then is switched on again after the precursor is detected once.
    Type: Application
    Filed: January 24, 2023
    Publication date: September 28, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Koudai, Yuji Fujita, Yugo Nagashima, Kazuma Hasegawa, Yuuta Kajisawa, Masaharu Yamashita, Yosuke Yamashita, Kazuaki Iida, Shintaro Takayama
  • Publication number: 20230234639
    Abstract: A steering control device includes a control unit. The control unit is configured to execute a control angle calculation process, an angle feedback process, and a standard value adjustment process. The control angle calculation process is a process of calculating a control angle as an absolute angle relative to a standard value, and the angle feedback process is a process of performing feedback control on the control angle, and the standard value adjustment process is a process of adjusting the stored standard value. The standard value adjustment process includes a process of, when, in a straight-ahead state, the control angle deviates from a value showing the straight-ahead state, adjusting the standard value such that the deviation of the control angle from the value showing the straight-ahead state decreases.
    Type: Application
    Filed: January 19, 2023
    Publication date: July 27, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Koudai, Yuji Fujita, Yugo Nagashima, Kazuma Hasegawa, Yuuta Kajisawa, Shintaro Takayama, Hiroyuki Katayama, Yosuke Yamashita, Masaharu Yamashita
  • Publication number: 20230219618
    Abstract: A steer-by-wire steering system including a steering device including a steering motor and a controller configured to supply a steering current to the steering motor based on a steering request. The controller includes a plurality of microcomputers, a plurality of drive circuits, and a plurality of temperature sensors. When a detection temperature difference that is a difference between detection temperatures of any two of the plurality of temperature sensors is greater than a predetermined threshold, each of the plurality of microcomputers executes an independent calculation control to independently calculate and set a current limit value, which is an upper limit value of the steering current, based on a detection temperature of one of the plurality of temperature sensors corresponding to itself, irrespective of detection temperatures of one or more of the plurality of temperature sensors other than the one of the plurality of temperature sensors corresponding to itself.
    Type: Application
    Filed: December 16, 2022
    Publication date: July 13, 2023
    Applicants: Toyota Jidosha Kabushiki Kaisha, JTEKT CORPORATION, DENSO CORPORATION
    Inventors: Takahito ISHINO, Masaharu YAMASHITA, Kenji SHIBATA, Yosuke YAMASHITA, Shintaro TAKAYAMA, Kazuaki IIDA, Ryo YAMAZAKI, Yuuta KAJISAWA, Kenichi ABE, Toyohiro HAYASHI, Nobuyori NAKAJIMA, Hiroyasu OTAKE, Kurumi TAZUKE, Hiroki TOMIZAWA
  • Publication number: 20230219617
    Abstract: A steering control device is applied to a steer-by-wire system in which a steering mechanism and a turning mechanism are mechanically separated. The steering control device applied to the steer-by-wire system controls a drive of a steering motor that functions as a reaction motor that applies reaction torque to a steering wheel. A steering wheel lock calculating unit of the steering control device performs a steering wheel lock drive control for calculating a drive command so as to output a lock torque for maintaining a rotation stop state of the steering wheel by energizing the steering motor when a predetermined condition is satisfied while a vehicle is parked or stopped. A power converter converts power supply electric power according to the drive command calculated by the steering wheel lock calculating unit and supplies the electric power to the steering motor.
    Type: Application
    Filed: March 14, 2023
    Publication date: July 13, 2023
    Inventors: TAKAYUKI UCHIDA, YOSUKE YAMASHITA, SHINTARO TAKAYAMA, KAZUAKI IIDA, MASAHARU YAMASHITA, KAZUMA HASEGAWA, YUJI FUJITA, KENICHI ABE, YUUTA KAJISAWA, YUGO NAGASHIMA
  • Publication number: 20230202553
    Abstract: A steer-by-wire rudder system includes a first system having a first motor unit that drives a rudder mechanism and a first control unit that controls the first motor unit, and a second system having a second motor unit that drives the rudder mechanism and a second control unit that controls the second motor unit. The first control unit and the second control unit perform cooperative control for controlling the first motor unit and the second control unit to cooperate with each other. When the cooperative control is not performed, one of the control of the first motor unit by the first control unit and the control of the second motor unit by the second control unit continues, and the other thereof stops.
    Type: Application
    Filed: February 22, 2023
    Publication date: June 29, 2023
    Inventors: KURUMI TAZUKE, HIROKI TOMIZAWA, HISASHI KAMEYA, TOSHIMITSU SAKAI, MASAHARU YAMASHITA, KENJI SHIBATA, YOSUKE YAMASHITA, SHINTARO TAKAYAMA, TOSHIHIRO TAKAHASHI, YUJI FUJITA, KENICHI ABE, YUGO NAGASHIMA
  • Publication number: 20230130839
    Abstract: A steering control device includes a control circuit configured to control driving of a reaction force motor that generates steering reaction force applied to a steering wheel in which power transmission with turning wheels of a vehicle is separated. When a vehicle power source is turned on, the control circuit requests a vehicle control device to stop traveling of the vehicle when information is exchanged with the vehicle control device in a manner that does not follow a predetermined pattern.
    Type: Application
    Filed: October 26, 2022
    Publication date: April 27, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yugo NAGASHIMA, Yuji FUJITA, Yuuta KAJISAWA, Kazuma HASEGAWA, Takashi KOUDAI, Masaharu YAMASHITA, Yosuke YAMASHITA, Shintaro TAKAYAMA, Hiroki TOMIZAWA
  • Publication number: 20230131995
    Abstract: A steering control device includes a controller including a drive circuit that performs action for supplying, to a motor, electric power supplied by being connected to at least one of a first and a second power supply. When a connection state of the drive circuit is a state in which electric power is supplied from the first power supply, the connection state is switched by a power supply device to transition to a second state in which electric power is supplied from the second power supply when an abnormality of the first power supply is detected. Moreover, the controller starts an output limiting process of limiting torque outputtable by the motor as compared with before the abnormality of the first power supply is detected, after the abnormality is detected and before switching of the connection state is completed.
    Type: Application
    Filed: October 21, 2022
    Publication date: April 27, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Takashi KOUDAI, Yuji FUJITA, Yugo NAGASHIMA, Yuuta KAJISAWA, Kazuma HASEGAWA, Masaharu YAMASHITA, Yosuke YAMASHITA, Shintaro TAKAYAMA, Hiroki TOMIZAWA, Nobuyori NAKAJIMA
  • Publication number: 20230126878
    Abstract: A steering control device includes a controller configured to control driving of a motor that generates a torque. The torque is a torque applied to a steering mechanism of a vehicle using electric power from at least any one of an in-vehicle main power source and an auxiliary power source that backs up the main power source. The controller is configured to wait for the auxiliary power source to be charged to an extent that the main power source is able to be backed up and to permit the vehicle to travel when the controller is activated with an activation operation for the vehicle as a trigger and transitions to a state where control of the motor is executable.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 27, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi KOUDAI, Yuji FUJITA, Yugo NAGASHIMA, Yuuta KAJISAWA, Kazuma HASEGAWA, Yosuke YAMASHITA, Shintaro TAKAYAMA
  • Publication number: 20230119506
    Abstract: A control device for a vehicle includes a plurality of control circuits configured to control a control object in cooperation or in combination by starting with powering-on of a vehicle as a trigger. Each of the plurality of control circuits is configured to perform a synchronization process and power latch control. Each of the plurality of control circuits is configured to maintain the operation mode immediately before the vehicle has been powered off in a period in which the power latch control is being performed. Each of the plurality of control circuits is configured not to perform the synchronization process in a predetermined period when the vehicle has been powered on.
    Type: Application
    Filed: October 14, 2022
    Publication date: April 20, 2023
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Kazuma HASEGAWA, Yuji FUJITA, Yugo NAGASHIMA, Masaharu YAMASHITA, Shintaro TAKAYAMA, Yosuke YAMASHITA, Hiroki TOMIZAWA, Nobuyori NAKAJIMA