公开(公告)号：US20220294371A1

公开(公告)日：2022-09-15

申请号：US17828444

申请日：2022-05-31

Applicant: DENSO CORPORATION

Inventor： Daisuke YAMAMOTO ,  Seiji NAKAYAMA ,  Jun YAMADA ,  Kouji SAKAGUCHI

IPC: H02P6/24 ,  H02P6/28 ,  H02P6/16 ,  H02K11/33 ,  H02P25/08

Abstract: A motor control device controls a drive of a motor in a motor drive system including the motor and a detent mechanism. The detent mechanism has a detent member that rotates integrally with an output shaft to which the rotation of the motor is transmitted, and an engaging member that moves a valley portion by a rotation of the motor and positions the output shaft by stopping within a positioning range. The motor control device includes a positioning determination unit and an energization control unit. The positioning determination unit determines whether or not the engaging member is stopped within the positioning range based on control parameter other than a detection value of a motor rotation angle sensor that detects a motor rotation angle. When the energization control unit determines that the engaging member is stopped within the positioning range, the energization control unit turns off the energization of the motor.

公开(公告)号：US20220190750A1

公开(公告)日：2022-06-16

申请号：US17685524

申请日：2022-03-03

Applicant: DENSO CORPORATION

Inventor： Kouji SAKAGUCHI ,  Seiji NAKAYAMA ,  Jun YAMADA

IPC: H02P1/02

Abstract: A motor control device controls the drive of a motor including a motor winding. The motor control device is provided with an energization control unit and a standstill determination unit. The energization control unit controls the energization of the motor winding in accordance with a detection value of a rotational position sensor that detects a rotational position of the motor. The standstill determination unit determines a standstill of the motor. When a standstill of the motor is detected, the energization control unit controls energization in a change pattern that is an energization pattern different from a preset regular pattern in accordance with the detection value of the rotational position sensor.

公开(公告)号：US20160290493A1

公开(公告)日：2016-10-06

申请号：US15088413

申请日：2016-04-01

Applicant: DENSO CORPORATION

Inventor： Yuusaku KAWAGUCHI ,  Jun YAMADA

IPC: F16H59/02 ,  F16H59/08

CPC classification number: F16H59/0208 ,  F16H59/08

Abstract: A gear shifter performs an abutment learning, having a reference value learner that sets a reference value of a position signal when abutting a drive object to a stopper, and reduces warpage by (i) an all phase power supply supplying to the electric current to all of the plural phase coils of the direct current motor, and (ii) by reducing an amount of the electric current supplied to the coils, and by decreasing a pressing force of the drive object pressing the drive object against the stopper. The reference value determined at a warpage diminish time enables a reduction of variation of the reference value due to an influence of the warpage, thereby setting a robust reference value to account for an environmental condition such as a temperature change, for an accurate shift operation of the gear shifter.

Abstract translation: 齿轮换档器执行基台学习，具有参考值学习者，当将驱动对象抵靠在止动器上时，设定位置信号的参考值，并且通过（i）向所有的电流供应电流的全相电力供应来减少翘曲 的直流电动机的多相线圈，以及（ii）通过减少供给到线圈的电流量，并且通过减小将驱动对象压靠在止动器上的驱动对象的按压力。 在翘曲减小时间确定的基准值能够减少由于翘曲的影响引起的参考值的变化，从而设定鲁棒的参考值以考虑诸如温度变化的环境条件，以进行精确的换档操作 换档器。

公开(公告)号：US20160141981A1

公开(公告)日：2016-05-19

申请号：US14934205

申请日：2015-11-06

Applicant: DENSO CORPORATION

Inventor： Jun YAMADA

IPC: H02P6/00 ,  H02P3/06

CPC classification number: H02P3/06 ,  H02P6/12 ,  H02P6/24 ,  H02P6/30 ,  H02P6/34

Abstract: A motor controller that is configured to switch power supply phases of the motor, to perform a limit-position abutment control by rotating the motor to a movable limit of a movable range of the rotation object to learn a reference position of the motor, perform a power-saving return control afterwards, in which a power supply to the motor is stopped, thereby returning a rotation position of the motor toward a target rotation position, and stop the rotation of the motor by simultaneously supplying power to a preset phase of the motor, when the rotation position of the motor reaches the target rotation position. In such manner, the power consumption as well as the heat generation of the motor are reduced for returning the rotation position of the motor to a preset rotation position after the abutment control of the motor.

Abstract translation: 一种电动机控制器，其被配置为切换电动机的电源相位，以通过将电动机旋转到旋转对象的可移动范围的可移动极限来执行限位位置控制，以学习电动机的参考位置，执行 之后的节电返回控制，其中停止对电动机的电力供给，从而使电动机的旋转位置返回到目标旋转位置，并且通过同时向电动机的预设相位供电来停止电动机的旋转 当电动机的旋转位置到达目标旋转位置时。 以这种方式，马达的功率消耗以及发热量减小，以使马达的旋转位置在马达的抵接控制之后恢复到预设的旋转位置。

公开(公告)号：US20150155803A1

公开(公告)日：2015-06-04

申请号：US14551366

申请日：2014-11-24

Applicant: DENSO CORPORATION

Inventor： Kazuhiro YOSHIDA ,  Jun YAMADA

IPC: H02P6/00 ,  H02P6/14

CPC classification number: F16H61/32 ,  B60W50/00 ,  F16H61/12 ,  F16H2061/1268 ,  F16H2061/326 ,  H02P6/14

Abstract: A motor control apparatus includes a by-wire control circuit for sequentially switching an energized phase of a motor. The by-wire control circuit pre-stores a first table defining an energized phase address corresponding to each address and a second table defining an energized phase corresponding to each energized phase address. When receiving a drive permission code from a second control circuit, the by-wire control circuit switches the energized phase in a correct order of driving the motor, by calculating an address for access to the first table based on the drive permission code, calculating an energized phase address corresponding to the address by referring to the first table, and determining the energized phase corresponding to the energized phase address by referring to the second table.

Abstract translation: 电动机控制装置包括用于顺序地切换电动机的通电相位的绕线控制电路。 线控制电路预先存储定义与每个地址对应的通电相位地址的第一表，以及定义对应于每个通电阶段地址的通电阶段的第二表。 当从第二控制电路接收到驱动器许可代码时，旁线控制电路通过基于驱动许可代码计算用于访问第一表的地址来切换驱动马达的正确顺序的通电相位， 通过参照第一表与地址相对应的通电相位地址，并参照第二表确定与激励相位地址对应的通电相位。

公开(公告)号：US20140139171A1

公开(公告)日：2014-05-22

申请号：US14078659

申请日：2013-11-13

Applicant: DENSO CORPORATION

Inventor： Kazuhiro YOSHIDA ,  Jun YAMADA

IPC: G05B19/23

CPC classification number: G05B19/39 ,  F16H61/32 ,  F16H2061/283 ,  F16H2061/326 ,  G05B2219/42095

Abstract: A range switching device provides a feedback control for rotating a motor toward a target rotation position. When a target shift range is switched, the range switching device rotates the motor toward a target rotation position by sequentially switching power supply phases of the motor based on an encoder count value. When the motor rotates within a predetermined stop range, the feedback control ends and a power supply to the motor is stopped. However, if the motor has not rotated to the target rotation position after a predetermined time has elapsed from the stopping of the power supply to the motor, an open drive is performed, in which the power supply phase of the motor is sequentially switched by open-loop control and the motor is rotated in small and/or minute steps toward the target rotation position. In such manner, position accuracy of the shift range switching is improved.

Abstract translation: 范围切换装置提供用于使马达朝向目标旋转位置旋转的反馈控制。 当切换目标变速范围时，通过根据编码器计数值依次切换电动机的电源相位，使变频器转动到目标转动位置。 当电动机在预定的停止范围内旋转时，反馈控制结束并停止对电动机的供电。 然而，如果在从停止供电到电动机的预定时间过去之后电动机没有转动到目标转动位置，则开启驱动器，其中马达的电源相位依次切换 循环控制，并且电机以小和/或微小步骤朝向目标旋转位置旋转。 以这种方式，改变了换档范围切换的位置精度。

公开(公告)号：US20140015467A1

公开(公告)日：2014-01-16

申请号：US13939634

申请日：2013-07-11

Applicant: DENSO CORPORATION

Inventor： Kiyoshi KIMURA ,  Jun YAMADA

IPC: G05B5/01 ,  H02P6/00

CPC classification number: G05B5/01 ,  H02P6/24

Abstract: A motor control apparatus includes a motor that rotates a controlled object, an encoder that outputs a pulse signal in synchronization with a rotation of the motor, and a control section that performs a feedback control so as to rotate the motor to the target rotational position. The control section includes a stopping and holding control portion. The stopping and holding control portion performs a stopping and holding process in which the stopping and holding control portion supplies electric current to the motor so as to stop and hold the motor for a current-supply holding time. The stopping and holding control portion sets the current-supply holding time on the basis of a rotation speed of the motor just before the stopping and holding process.

Abstract translation: 电动机控制装置包括旋转受控对象的电动机，与电动机的旋转同步地输出脉冲信号的编码器以及执行反馈控制以将电动机旋转到目标旋转位置的控制部。 控制部包括停止保持控制部。 停止保持控制部进行停止保持处理，在该停止保持控制部中，停止保持控制部向电动机供给电流，从而停止并保持电动机供电保持时间。 停止控制部根据停止保持处理前的电动机的转速设定供电保持时间。

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.