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公开(公告)号：US20240067142A1
公开(公告)日：2024-02-29
申请号：US18493427
申请日：2023-10-24
Applicant: DENSO CORPORATION
Inventor： Akihiro HARADA , Seiji NAKAYAMA , Shigeru KAMIO , Takuji NAKAMURA
CPC classification number: B60T8/171 , B60T17/221 , B60T1/005 , B60T2201/10 , B60T2270/89
Abstract: A vehicle control device includes: an actuator drive controller configured to control a drive of an actuator; a main motor drive controller configured to control a drive of a main motor; and a stuck determiner. The stuck determiner determines a stuck of the actuator based on a detection value of a sensor unit that detects a physical quantity changed according to a drive state of the actuator. The main motor drive controller is configured to perform an engaging surface pressure reduction control for reducing an engaging surface pressure between a parking gear and a parking lever by driving the main motor, when the stuck determiner determines that the actuator is stuck in releasing a parking lock of the vehicle.
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公开(公告)号：US20240059155A1
公开(公告)日：2024-02-22
申请号：US18493405
申请日：2023-10-24
Applicant: DENSO CORPORATION
Inventor： Akihiro HARADA , Shigeru KAMIO , Seiji NAKAYAMA
CPC classification number: B60L15/20 , F16H63/3466 , F16H59/52 , F16H59/70 , F16H59/66 , F16H2059/663
Abstract: A vehicle control device controls a vehicle drive system including a main motor as a drive source of a vehicle, a parking lock mechanism, and an actuator. The vehicle control device includes an actuator drive control section that controls a drive of the actuator, a main motor drive control section that controls a drive of the main motor, and a range determination unit that determines whether or not a shift range is a parking range. When releasing the parking lock, if the parking range is not released within a parking range release determination time that is variable according to an operating environment, the main motor drive control section performs a meshing surface pressure reduction control for driving the main motor so as to reduce a meshing surface pressure between a parking gear and a parking lever.
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公开(公告)号：US20240042849A1
公开(公告)日：2024-02-08
申请号：US18491412
申请日：2023-10-20
Applicant: DENSO CORPORATION
Inventor： Akihiro HARADA , Seiji NAKAYAMA , Shigeru KAMIO
IPC: B60K26/02
CPC classification number: B60K26/02
Abstract: A vehicle control device controls a vehicle drive system having a main motor serving as a source of drive power of a vehicle, a parking lock mechanism, and an actuator. The vehicle control device includes an actuator drive controller that controls drive of the actuator, and a main motor drive controller that controls drive of the main motor. When a parking lock of the vehicle cannot be released by the actuator due to an engaging surface pressure between a parking gear and a parking lever, the main motor drive controller performs an engaging surface pressure reduction control in which an engaging surface pressure is reduced by driving the main motor to cause an increase of a torque of the main motor by a set increase speed.
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公开(公告)号：US20230365002A1
公开(公告)日：2023-11-16
申请号：US18224177
申请日：2023-07-20
Applicant: DENSO CORPORATION
Inventor： Haibo LIU , Keisuke KAWAI , Akira SAKAMOTO , Tatsuya TAKAGI , Shigeru KAMIO
IPC: B60L15/20
CPC classification number: B60L15/20
Abstract: A control apparatus includes an operation control unit; a first torque command value setting unit that sets a required torque command value; a second torque command value setting unit that sets a vehicle-stop torque command value; and a waveform setting unit that sets a torque waveform. The operation control unit controls the output torque of the rotary electric machine along the torque waveform when changing the output torque of the rotary electric machine. The waveform setting unit utilizes a first torque waveform and subsequently utilizes a second torque waveform as the torque waveform, the first torque waveform being capable of attenuating a vibration of the vehicle in a pitch direction, the second torque waveform being capable of suppressing a vibration in a power transmission member provided in a power transmission system for transmitting a torque of the rotary is electric machine to wheels.
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公开(公告)号：US20220345065A1
公开(公告)日：2022-10-27
申请号：US17861789
申请日：2022-07-11
Applicant: DENSO CORPORATION
Inventor： Tarou HIRAI , Shigeru KAMIO
IPC: H02P27/06 , H02P29/024 , B60L15/20 , B60L3/00
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. A difference calculation unit that, when the vehicle travels forward, calculates a difference between the target-value and the target-monitoring-value when the target-value is a first determination value or more, and does not calculate the difference when the target-value is less than the first determination value, and that, when the vehicle travels rearward, calculates the difference when the target-value is a second determination value or less, and does not calculate the difference when the target-value is more than the second determination value.
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Patent Agency Ranking
公开(公告)号：US20200088294A1
公开(公告)日：2020-03-19
申请号：US16693814
申请日：2019-11-25
Applicant: DENSO CORPORATION
Inventor： Shigeru KAMIO
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.
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公开(公告)号：US20200080634A1
公开(公告)日：2020-03-12
申请号：US16682181
申请日：2019-11-13
Applicant: DENSO CORPORATION
Inventor： Shigeru KAMIO
Abstract: A shift range control device switches a shift range by controlling driving of a motor. A learning unit learns, as a position correction value, a normal state time correction value calculated based on at least one of a first reference angle and a second reference angle when at least one output shaft signal is available at a time of turning on of a start switch. The first reference angle is a motor angle at timing when the output shaft signal changes in response to the rotation of the motor in a first direction. The second reference angle is the motor angle at timing when the output shaft signal changes in response to the rotation of the motor in a second direction opposite to the first direction. A target setting unit sets a motor angle target value by using the normal state time correction value stored in a storage unit during a period from when all the output shaft signals are determined to be unavailable to when the start switch is turned off.
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公开(公告)号：US20190389440A1
公开(公告)日：2019-12-26
申请号：US16559917
申请日：2019-09-04
Applicant: DENSO CORPORATION
Inventor： Shigeru KAMIO
Abstract: A brake control device is a control device for a vehicle used in a vehicle on which the shift-by-wire system and the brake-by-wire system are mounted. A function of automatically operating the brake device without an operation of the driver of the vehicle is referred to as a BBW automatic operation function, and a request by the driver for disabling the BBW automatic operation function is referred to as a disabling request. A brake control device includes a disabling determination part configured to determine a presence or absence of the disabling request, the 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 a BBW automatic operation part. The BBW automatic operation part operates the brake device when the vehicle is stopped on the slope even if the disabling request is made.
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公开(公告)号：US20190131896A1
公开(公告)日：2019-05-02
申请号：US16093158
申请日：2017-03-06
Applicant: DENSO CORPORATION
Inventor： Shigeru KAMIO
Abstract: A shift range control apparatus switches shift range by controlling the drive of a motor. The shift range control apparatus includes a feedback controller that is configured to perform position feedback control based on a target angle determined corresponding to the request shift range and the actual angle of the motor; a stationary phase energization controller that is configured to perform stationary phase energization control that energizes a stationary phase selected corresponding to an actual angle; and a switching controller that switches between motor control states. The switching controller switches the control state to position feedback control when the request shift range is switched. When the difference between the target angle and the actual angle becomes equal to or less than an angle determination threshold value, the switching controller switches the control state from position feedback control to the stationary phase energization control.
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公开(公告)号：US20240351448A1
公开(公告)日：2024-10-24
申请号：US18761380
申请日：2024-07-02
Applicant: DENSO CORPORATION
Inventor： Shigeru KAMIO , Haibo LIU , Keisuke KAWAI
CPC classification number: B60L15/2009 , B60L7/18 , B60L2240/12 , B60L2240/423
Abstract: The control system has a motion control unit and a stopping failsafe control unit. The motion control unit executes a first torque control when a traveling speed of the mobile object exceeds a predetermined speed and executes a second torque control when the traveling speed of the mobile object is below the predetermined speed. The second torque control is a control to change the output torque of the motor from the instructed torque command value to the stop torque command value along the torque waveform progressively. The stopping failsafe control unit determines whether an abnormality has occurred in the motor based on a comparison between an output torque of the motor when the second torque control is executed and a predetermined abnormality determination value and executes a first failsafe control of the motor when it is determined that the motor is abnormal.
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