Patents by Inventor Shigeru Kamio

Shigeru Kamio 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: 20230159040
    Abstract: A control device is installable in a mobile body movable based on a power outputted from each of a plurality of motor sections. The control device includes: a plurality of motor controllers configured to separately control the plurality of respective motor sections; and a plurality of monitoring sections configured to separately monitor presence or absence of an abnormality in the plurality of respective motor controllers. In response to either one of the plurality of monitoring sections detecting the abnormality in the motor controller, abnormal one of the motor controllers is caused to stop controlling the motor section while the normal one of the motor controllers where no abnormality is detected is caused to continue to control the motor section.
    Type: Application
    Filed: January 11, 2023
    Publication date: May 25, 2023
    Applicant: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Publication number: 20230134514
    Abstract: A control device includes a motor control unit that controls an electric motor, a shift control unit that controls a shift by wire system of a movable body, and a torque detection unit that detects torque applied to a power transmission mechanism. The shift control unit drives an actuator unit so that the power transmission mechanism locked by a lock mechanism is unlocked, based on a change of a shift range of the shift by wire system from a parking range to a non-parking range. The motor control unit controls output of the electric motor depending on detected torque of the torque detection unit, based on the change of the shift range of the shift by wire system from the parking range to the non-parking range.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Applicant: DENSO CORPORATION
    Inventors: Kenta KODUKA, Shigeru Kamio
  • Publication number: 20230121809
    Abstract: A control apparatus is mountable to a vehicle including an electric motor, a lock mechanism, and an actuator apparatus. The control apparatus controls the electric motor and a shift-by-wire system provided in the vehicle. The shift-by-wire system performs switching to shift ranges of the vehicle including a shift range and a non-parking range other than the parking range. The control apparatus drives the actuator apparatus to release the lock on the power transmission mechanism by the lock mechanism based on the shift range of the shift-by-wire system being switched from the parking range to the non-parking range. The control apparatus performs torque correction control in which an output torque of the electric motor is corrected such that a load acting on the lock mechanism from the power transmission mechanism is reduced based on the shift range of the shift-by-wire system being switched from the parking range to the non-parking range.
    Type: Application
    Filed: December 16, 2022
    Publication date: April 20, 2023
    Applicant: DENSO CORPORATION
    Inventor: Shigeru KAMIO
  • Patent number: 11624438
    Abstract: A motor angle calculation unit acquires from a motor rotation angle sensor a motor rotation angle signal corresponding to a rotational position of the motor, and calculates a motor angle based on the motor rotation angle signal. An output shaft signal acquisition unit acquires, from an output shaft sensor that detects a rotational position of an output shaft, an output shaft signal corresponding to the rotational position of an output shaft. An abnormality determination unit determines abnormality in the output shaft sensor. A target angle setting unit sets a target rotation angle corresponding to a target shift range. A drive control unit controls driving of the motor so that the motor angle becomes a target rotation angle. The target angle setting unit sets the target rotation angle to different values when the output shaft sensor is normal and when the output shaft sensor is abnormal.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: April 11, 2023
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Publication number: 20230022163
    Abstract: A control apparatus for a vehicle includes an offset torque calculator configured to perform calculation of offset torque to be applied to at least one wheel of the vehicle. The offset torque is required to stop the vehicle on a sloping road having a predetermined gradient. The control apparatus includes a motor controller configured to, for stopping the vehicle on the sloping road having the predetermined gradient, perform control of causing output torque of the motor-generator to asymptotically approach the offset torque.
    Type: Application
    Filed: October 3, 2022
    Publication date: January 26, 2023
    Applicant: DENSO CORPORATION
    Inventor: Shigeru KAMIO
  • Publication number: 20220345065
    Abstract: The control device includes a target-value calculation unit calculating a target-value of a controlled variable that is torque of a rotating electrical machine, drive force, or acceleration of a vehicle, based on redundant signal and non-redundant signals, an inverter operation unit operating the inverter to control the controlled variable to the target-value, and a monitoring-value calculation unit calculating a target-monitoring-value of the controlled variable based on the redundant signal.
    Type: Application
    Filed: July 11, 2022
    Publication date: October 27, 2022
    Applicant: DENSO CORPORATION
    Inventors: Tarou HIRAI, Shigeru KAMIO
  • Patent number: 11349429
    Abstract: A shift range control device is provided for a shift range switching system that includes a motor and a plurality of detectors. The motor has a plurality of winding sets. Each of the detectors is configured to detect a physical quantity that changes in accordance with rotation of the motor. The shift range control device includes a plurality of controllers configured to control switching of a shift range by controlling drive of the motor. Each of the controllers is provided to corresponding one of the winding sets and configured to acquire detection signals from the detectors, determine, based on the detection signals, a calculation signal having a same value between the controllers, and control, based on a target shift range and the calculation signal, a current supply to the corresponding one of the winding sets.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: May 31, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11287035
    Abstract: A rotational angle sensor detects the rotational position of a motor and outputs a motor rotational angle signal corresponding to the rotational position of the motor. An output shaft sensor detects a change in the magnetic field of a target that rotates integrally with an output shaft to which the rotation of the motor is transmitted, and outputs an output shaft signal according to the rotational position of the output shaft. A shift range control unit includes a motor control unit.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: March 29, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11247645
    Abstract: An output shaft receives transmission of a driving force of a motor. A valley forming member has valley portions correspondingly to shift ranges and rotates integrally with the output shaft. An engaging member is biased with a biasing member in a direction to be fitted to a valley portion and is configured to be fitted to a target valley portion, which is a valley portion corresponding to a target shift range. The motor control unit performs a control to drive the motor. The motor shaft, which is a rotary shaft of the motor, and the output shaft have a play therebetween. The motor control unit determines a motor target position to locate the engaging member at a position shifted by a predetermined amount before the center of the target valley portion in the driving direction.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: February 15, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11242900
    Abstract: A first engagement member includes a first meshing portion and rotates integrally with a first shaft. A second engagement member includes a second meshing portion configured to mesh with the first meshing portion and rotates integrally with a second shaft. An electric clutch device drives the first engagement member via a pressing member that extends and contracts in response to drive of a clutch actuator. When the electric clutch device is to be engaged, the first shaft command computation unit sets the first shaft rotation speed command value to be smaller than the rotation speed of the second shaft. Further, after the rotation speed of the first shaft matches the first shaft rotation speed command value, the first shaft command computation unit sets the first shaft rotation speed command value to be gradually closer to the rotation speed of the second shaft.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: February 8, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11231076
    Abstract: A first engagement member rotates integrally with a first shaft. A second engagement member rotates integrally with a second shaft. An electric clutch device drives the first engagement member with a pressing member that extends and contracts in response to drive of the clutch actuator. The drive control unit performs a position control to control the clutch actuator, such that a drive amount of the first engagement member becomes a target stroke amount, when the first engagement member and the second engagement member are separated from each other and performs a pressing force control to control the clutch actuator, such that the pressing force between the first engagement member and the second engagement member becomes a target pressing force, when the first engagement member and the second engagement member are engaged with each other.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: January 25, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11226037
    Abstract: A shift range switching control device for switching a shift range by controlling driving of a motor includes a feedback control section, a stationary phase energization control section, and a switching control section. The feedback control section performs a feedback control based on an actual angle of the motor, and a motor speed. The stationary phase energization control section performs a stationary phase energization control which energizes a stationary phase selected according to the actual angle. The switching control section switches the control state of the motor.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: January 18, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11226033
    Abstract: A shift range control device switches a shift range by controlling the driving operation of a motor in a shift range switching system. The shift range control device includes a drive control unit, a stop control unit, and a return control unit. The drive control unit drives the motor so that an engagement member engages in one of recess portions corresponding to a requested shift range. The stop control unit stops the motor at a target position corresponding to the requested shift range. When the requested shift range corresponds to one of both ends of multiple recess portions, the return control unit returns the rotation position of the motor after the motor stops at the target position.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: January 18, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Publication number: 20210394621
    Abstract: An electric motor control device includes a target torque setting unit setting target torque for each of a right-side control circuit and a left-side control circuit, and a failure occurrence determination unit determining whether there is a failure occurrence in at least one of the two control circuits. The target torque setting unit sets, in response to there being a failure occurrence in a failure control circuit that is one of the two control circuits and there being a no failure occurrence in a normal control circuit that is the other of the two control circuits, fail-safe torque which is lower than a normal value of the target torque as the target torque for the failure control circuit, and sets failure-time target torque which is lower than the normal value of the target torque and being higher than the fail-safe torque as the target torque for the normal control circuit.
    Type: Application
    Filed: September 1, 2021
    Publication date: December 23, 2021
    Applicant: DENSO CORPORATION
    Inventor: Shigeru KAMIO
  • Patent number: 11192529
    Abstract: A parking brake control device is a control device for a vehicle used in a vehicle on which a shift by wire system and an electric parking brake system are mounted. A function of automatically operating an electric parking brake without an operation of the driver of the vehicle is referred to as an EPB automatic operation function, and a request by the driver for disabling the EPB automatic operation function is referred to as a disabling request. The parking brake control device includes a disabling determination part configured to determine a presence or absence of the disabling request, a vehicle stop determination part configured to determine whether the vehicle is stopped, a slope determination part configured to determine whether the vehicle is located on a slope, and an EPB automatic operation part. The EPB automatic operation part operates the electric parking brake when the vehicle is stopped on the slope even if the disabling request is made.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: December 7, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11162580
    Abstract: An angle calculation unit calculates a motor angle based on a motor rotation angle signal acquired from a motor rotation angle sensor that detects a rotational position of a motor. An acceleration variation calculation unit calculates an acceleration variation parameter related to an amount of variation in motor acceleration, based on the motor angle. An idle running determination unit determines the end of an idle running state in which the motor is rotating within the range of play, based on the acceleration variation parameter. A target setting unit sets a target motor angle by adopting an angle correction value that is a value corresponding to the motor angle at the end of the idle running state. A drive control unit controls the drive of the motor such that the motor angle becomes the target motor angle.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: November 2, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11112008
    Abstract: A vehicle control device controls a vehicle control system, which includes a shift range switching system configured to switch a shift range by controlling a drive of a shift actuator, and an electric brake system configured to brake a vehicle by controlling a drive of a brake actuator. The vehicle control device includes a shift control unit and a brake control unit. The shift control unit controls a drive of the shift actuator. The brake control units control a drive of a brake actuator. When the start switch of the vehicle is turned off, the power of the brake control units is turned off after the shift range switching system completes switching to the P range.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: September 7, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11092236
    Abstract: A vehicle control device controls a vehicle control system, which includes a shift range switching system configured to switch a shift range by controlling a drive of a shift actuator, and an electric brake system configured to brake a vehicle by controlling a drive of a brake actuator. The vehicle control device includes a drive control unit, an abnormality monitoring unit, and a presence determination unit. The drive control unit controls a drive of a shift actuator. The abnormality monitoring unit monitors an abnormality of the shift range switching system. The presence determination unit determines whether the driver is in the driver's seat. When the abnormality of the range mismatch, which the actual shift range does not match the target shift range in a state where the driver is absent, the vehicle control device executes the fail safe process different from the fail safe process when the driver is present.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: August 17, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11084493
    Abstract: A shift range control device switches a shift range by controlling the drive of a motor. An angle calculation unit calculates a motor angle based on a motor rotation angle signal acquired from a motor rotation angle sensor detecting a rotational position of the motor. An acceleration calculation unit calculates a motor acceleration based on the motor angle. A moving average calculation unit calculates an acceleration moving average value as a moving average of at least one of a predetermined electrical angle cycle and a predetermined mechanical angle cycle of the motor acceleration. A drive control unit adopts the acceleration moving average value to control the drive of the motor such that the motor angle becomes a target motor angle value corresponding to a target shift range.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: August 10, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11040673
    Abstract: A control apparatus for a motor generator in a vehicle includes a first control unit that determines a target torque using a redundant signal and a non-redundant signal, a monitoring unit that determines a monitoring target torque using the redundant signal, and a fail-safe determining unit. The fail-safe determining unit determines the execution of first fail-safe processing when a difference between the target torque and the monitoring target torque is equal to or more than a predetermined first upper limit threshold value or equal to or less than a first lower limit threshold value, and determines the execution of second fail-safe processing when the difference is equal to or more than a predetermined second upper limit threshold value which is smaller than the first upper limit threshold value or equal to or less than a second lower limit threshold value which is smaller than the first lower limit threshold value.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: June 22, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio