公开(公告)号：US20220060138A1

公开(公告)日：2022-02-24

申请号：US17518880

申请日：2021-11-04

Applicant: DENSO CORPORATION

Inventor： Jun YAMADA ,  Seiji NAKAYAMA ,  Kouji SAKAGUCHI ,  Haruka MIYANO

IPC: H02P29/024 ,  F16H61/32

Abstract: A motor control device controls a drive of a motor having a coil, and includes a drive circuit and a control unit. The drive circuit has a plurality of switching elements, and switches the energization of the coil. The control unit includes an energization control part and a current limit part. The energization control part accelerates and then decelerates the motor, and controls energization of the coil so that a rotation position of the motor stops at a target rotation position. The current limit part limits the current during a deceleration control.

公开(公告)号：US20200370643A1

公开(公告)日：2020-11-26

申请号：US15930840

申请日：2020-05-13

Applicant: DENSO CORPORATION

Inventor： Kouji SAKAGUCHI ,  Seiji NAKAYAMA ,  Jun YAMADA ,  Haruka MIYANO

IPC: F16H61/12 ,  F16H61/32

Abstract: A shift range control device that switches a shift range by controlling driving of a motor includes a plurality of control units and a plurality of motor drivers. The plurality of control units respectively have an energization control unit for controlling energization to the motor and an abnormality monitor unit for performing abnormality monitoring. The energization control unit turns off energization of the own system in a state of temporary abnormality before determining a decisive abnormality when abnormality affecting the other system is detected in the own system while driving the motor by the plurality of systems, and the abnormality monitor unit determines whether a state of abnormality is the temporary abnormality or the decisive abnormality after turning off energization of the own system.

公开(公告)号：US20190103825A1

公开(公告)日：2019-04-04

申请号：US16087247

申请日：2017-02-13

Applicant: DENSO CORPORATION

Inventor： Hiromitsu NAGATA ,  Seiji NAKAYAMA ,  Jun YAMADA

IPC: H02P6/08 ,  G05B19/406 ,  H02P6/12

Abstract: A motor control device includes: a state monitoring unit that detects a power supply abnormality in which a power is not normally supplied to at least one of a rotation sensor and a motor; an abnormality determination unit that detects an abnormality of the rotation sensor based on an output signal of the rotation sensor; and a decision unit that decides whether to confirm the abnormality of the rotation sensor based on a detection result of the state monitoring unit and a detection result of the abnormality determination unit. When the state monitoring unit detects the power supply abnormality, the decision unit does not decide the abnormality of the rotation sensor even when the abnormality determination unit detects the abnormality of the rotation sensor.

公开(公告)号：US20130144478A1

公开(公告)日：2013-06-06

申请号：US13705665

申请日：2012-12-05

Applicant: DENSO CORPORATION

Inventor： Fuminori SUZUKI ,  Jun YAMADA ,  Seiji NAKAYAMA

IPC: B60L15/20

CPC classification number: B60L15/20 ,  B60L15/2054 ,  B60L2240/425 ,  B60L2240/486 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275

Abstract: A shift range switcher includes a motor for switching a shift range and a controller for energizing the motor. The controller estimates temperatures of the motor and controller. The controller adds to the estimated controller temperature a value corresponding to heat generation in the controller due to energization of the motor. The controller subtracts from the estimated controller temperature a value corresponding to heat release from the controller due to de-energization of the motor. The controller adds to the estimated motor temperature a value corresponding to heat generation in the motor due to the energization. The controller subtracts from the estimated motor temperature a value corresponding to heat release from the motor due to the de-energization. The controller prohibits or restricts operations of the controller and the motor when at least one of the controller and motor estimated temperatures reaches an allowable temperature limit.

Abstract translation: 变速范围切换装置包括用于切换换挡范围的马达和用于使马达通电的控制器。 控制器估计电机和控制器的温度。 控制器通过电动机的通电将估计的控制器温度与控制器中的发热相对应。 控制器从估计的控制器温度中减去由于电动机的断电而与控制器的放热相对应的值。 控制器将估计的电动机温度与由于通电引起的电动机的发热相对应。 控制器从估计的电机温度中减去由于断电而对应于从电动机释放的热值。 当控制器和电动机估计温度中的至少一个达到允许的温度极限时，控制器禁止或限制控制器和电动机的操作。

公开(公告)号：US20230341048A1

公开(公告)日：2023-10-26

申请号：US18302373

申请日：2023-04-18

Applicant: DENSO CORPORATION

Inventor： Satoko TANEMURA ,  Seiji NAKAYAMA ,  Akihiro HARADA ,  Haruka MIYANO

IPC: F16H61/32 ,  F16H59/10

CPC classification number: F16H61/32 ,  F16H59/105 ,  F16H2061/326 ,  F16H2710/22

Abstract: A control device switches a shift range by driving a motor and moving a detent roller in a parking lock system including an electric actuator having the motor and a detent mechanism. A control unit of the control device includes a drive control part, a position determination part and a range determination part. The drive control part controls driving of the motor. When the detent roller is moved to a target valley portion corresponding to the target range, a position determination part determines that the detent roller has passed over a peak portion based on sensor information. The range determination part is configured to estimate that the detent roller has reached the range of the target range corresponding to the target range at a peak passing over determination timing when it is determined that the detent roller has passed over the peak portion.

公开(公告)号：US20200325986A1

公开(公告)日：2020-10-15

申请号：US16841790

申请日：2020-04-07

Applicant: DENSO CORPORATION

Inventor： Kouji SAKAGUCHI ,  Seiji NAKAYAMA ,  Jun YAMADA ,  Haruka MIYANO

IPC: F16H61/12 ,  F16H61/32

Abstract: A shift range control device includes an angle detector, a valley position learner, and a validity determiner. The angle detector detects a rotation angle of an output shaft of a shift actuator. The valley position learner learns the rotation angle of the output shaft when a locker is positioned at a valley bottom of a recess as a valley position based on a detection angle of the angle detector. The validity determiner determines validity of a learning value of the valley position learner.

公开(公告)号：US20170248229A1

公开(公告)日：2017-08-31

申请号：US15440359

申请日：2017-02-23

Applicant: DENSO CORPORATION

Inventor： Seiji NAKAYAMA

IPC: F16H61/32 ,  H02K1/14 ,  H02K11/21 ,  H02P8/06 ,  H02K1/24

CPC classification number: F16H61/32 ,  F16H63/3458 ,  F16H2061/326 ,  H02K1/146 ,  H02K1/24 ,  H02K11/21 ,  H02P8/06

Abstract: A motor controller includes a first forward driver rotating a motor in a forward rotation direction, a torque short determiner determining short of a switch torque, a backward driver driving the motor up to an extreme position in the backward rotation direction in a switch torque short case, and a second forward driver rotating the motor from the extreme position to a target position. When the second forward driver drives the motor, a drive objet is rotated not only by a motor torque but also by a twist backlash torque from a rotation transmission part. Further, after a rotation of the motor in the forward rotation direction, the backward rotation operation of the motor is performed only in the switch torque short case, thereby reducing a shift position switch time in a switch torque sufficient case.

公开(公告)号：US20130217531A1

公开(公告)日：2013-08-22

申请号：US13767177

申请日：2013-02-14

Applicant: DENSO CORPORATION

Inventor： Mikine KUME ,  Seiji NAKAYAMA ,  Taku ITOH

IPC: F16H1/32

CPC classification number: F16H1/32 ,  F16H1/2818 ,  F16H57/023 ,  F16H2055/176 ,  F16H2057/02034 ,  H02K5/04 ,  H02K7/116

Abstract: A rotary actuator includes a rotation shaft rotatably driven by a motor, an internal gear provided on an outer side of the rotation shaft in a radial direction of the rotation shaft, a rotation output section provided between the rotation shaft and the internal gear in the radial direction to reduce a rotation speed outputted from the rotation shaft and to output a power in conjunction with the internal gear, a cylindrical housing portion fixed to the internal gear, and an attachment member integrated with an outer wall of the housing portion. The internal gear has a protrusion protruding from an outer wall of the internal gear, and the housing portion has a recess into which the protrusion is inserted. The attachment member has an attachment hole that is different from the recess in position in a circumferential direction of the housing portion.

Abstract translation: 旋转致动器包括由电机可旋转地驱动的旋转轴，沿旋转轴的径向方向设置在旋转轴的外侧的内齿轮;旋转输出部，其设置在旋转轴和内齿轮之间的径向 方向，以减小从旋转轴输出的旋转速度并输出与内齿轮的动力;固定在内齿轮上的圆筒形壳体部分;以及与壳体部分的外壁一体化的安装部件。 内齿轮具有从内齿轮的外壁突出的突起，并且壳体部分具有凹部，突起被插入该凹槽中。 安装构件具有与壳体部的圆周方向上的凹部不同的安装孔。

公开(公告)号：US20220299108A1

公开(公告)日：2022-09-22

申请号：US17836353

申请日：2022-06-09

Applicant: DENSO CORPORATION

Inventor： Yusaku KAWAGUCHI ,  Seiji NAKAYAMA ,  Jun YAMADA

IPC: F16H61/12 ,  F16H61/32

Abstract: An ECU has a temperature detection unit that detects an actual temperature of the ECU, a temperature estimation unit that calculates an estimated temperature of the ECU, an abnormality determination unit for determining a presence or absence of a sign of abnormality, and a switching prohibition unit that prohibits the shift range switching in a predetermined case. The switching prohibition unit prohibits the shift range switching when there is no sign of abnormality in the temperature detection unit and the actual temperature is equal to or higher than a switching prohibition threshold, and prohibits the shift range switching when there is a sign of abnormality in the temperature detection unit and the estimated temperature is equal to or higher than a switching prohibition threshold. The temperature estimation unit calculates the estimated temperature based on a latest actual temperature in a normal period.

公开(公告)号：US20220221050A1

公开(公告)日：2022-07-14

申请号：US17708450

申请日：2022-03-30

Applicant: DENSO CORPORATION

Inventor： Haruka MIYANO ,  Kouji SAKAGUCHI ,  Jun YAMADA ,  Seiji NAKAYAMA

IPC: F16H61/28 ,  F16H61/32

Abstract: A shift range control device switches a shift range by controlling driving of a motor. The shift range control device calculate an actual rotation position of the motor. The shift range control device sets a target range according to a required range and a target rotation position according to the target range. The shift range control device controls the driving of the motor such that the actual rotation position reaches the target rotation position.