公开(公告)号：US08525464B2

公开(公告)日：2013-09-03

申请号：US12932410

申请日：2011-02-24

Applicant: Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

Inventor： Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

IPC: H02P3/08 ,  H02K11/00

CPC classification number: H02K11/001 ,  G01P3/48 ,  H02K11/20 ,  H02P7/0094

Abstract: A rotation detecting apparatus for detecting a rotational state of a direct-current motor includes a driving device, a control device, an energization detecting device, an alternating-current component detecting device, and a rotational state detecting device. An impedance between brushes of the motor changes periodically in accordance with rotation of the motor. The alternating-current component detecting device detects change of an alternating-current component of electric current that is supplied to the motor based on an electrical quantity. The change of the alternating-current component is caused by change of the impedance caused in accordance with the rotation. The rotational state detecting device detects at least one of a rotation angle, a rotational direction, and a rotational speed of the motor based on a detection result of the alternating-current component detecting device.

Abstract translation: 用于检测直流电动机的旋转状态的旋转检测装置包括驱动装置，控制装置，通电检测装置，交流分量检测装置和旋转状态检测装置。 马达的电刷之间的阻抗根据马达的转动而周期性地变化。 交流分量检测装置基于电量检测供给到电动机的电流的交流分量的变化。 交流分量的变化是由根据旋转引起的阻抗的变化引起的。 旋转状态检测装置基于交流分量检测装置的检测结果来检测电动机的旋转角度，旋转方向和转速中的至少一个。

公开(公告)号：US20100033064A1

公开(公告)日：2010-02-11

申请号：US12535968

申请日：2009-08-05

Applicant: Ken Tanaka ,  Tsutomu Nakamura ,  Kenji Takeda ,  Masaru Touge ,  Yasuhiro Fukagawa

Inventor： Ken Tanaka ,  Tsutomu Nakamura ,  Kenji Takeda ,  Masaru Touge ,  Yasuhiro Fukagawa

IPC: H02K11/00 ,  H02K23/00

CPC classification number: H02K23/66 ,  G01B7/30 ,  G01D5/2006 ,  G01P3/48 ,  H02P6/185 ,  H02P7/0094 ,  H02P2203/03

Abstract: A power supply unit superimposes alternating-current voltage on direct-current voltage and applies it to a motor. As a result, when the motor is rotated, a current containing an alternating-current component flows. Further, the motor includes a capacitor connected in parallel with one phase coil. Owing to this capacitor, the impedance of the motor circuit between brushes is varied according to the rotation of the motor. Variation in impedance appears as variation in the amplitude of the alternating-current component in motor current. A signal processing unit extracts an alternating-current component from the motor current detected by the current detection unit and generates a rotation pulse corresponding to variation in the amplitude. A rotation angle detection unit detects the rotation angle of the motor based on this rotation pulse.

Abstract translation: 电源单元将交流电压叠加在直流电压上并将其施加到电动机。 结果，当马达旋转时，流过含有交流分量的电流。 此外，电动机包括与一相线圈并联连接的电容器。 由于该电容器，电刷之间的电动机电路的阻抗根据电动机的旋转而变化。 阻抗的变化表现为电机电流中交流分量振幅的变化。 信号处理单元从由电流检测单元检测到的电机电流提取交流分量，并产生与振幅变化对应的旋转脉冲。 旋转角度检测单元基于该旋转脉冲检测电动机的旋转角度。

公开(公告)号：US08531068B2

公开(公告)日：2013-09-10

申请号：US12928641

申请日：2010-12-16

Applicant: Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

Inventor： Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

IPC: H02K11/00

CPC classification number: H02K23/66

Abstract: A direct current motor includes an armature coil having at least three phase coils, a commutator having multiple commutator segments connected to the armature coil, a pair of brushes in slidable contact with the commutator to supply power to the phase coils through the commutator, a rotation shaft, and a ring varistor coaxially fixed to the rotation shaft and having a ring-shaped varistor body and multiple electrodes that are circumferentially arranged on a surface of the varistor body. Each commutator segment is connected to a corresponding electrode of the ring varistor. The electrodes of the ring varistor are paired to form electrode pairs. Each electrode pair includes any two of the electrodes. A capacitance of one electrode pair is different from a capacitance of another electrode pair.

Abstract translation: 直流电动机包括具有至少三相线圈的电枢线圈，具有连接到电枢线圈的多个换向器段的换向器，与换向器滑动接触的一对电刷，以通过换向器向相线圈供电， 轴和环形变阻器同轴地固定在旋转轴上，并且具有环形可变电阻体和周向布置在可变电阻体的表面上的多个电极。 每个换向器段连接到环形变阻器的相应电极。 环形变阻器的电极配对形成电极对。 每个电极对包括任何两个电极。 一个电极对的电容与另一个电极对的电容不同。

公开(公告)号：US08222776B2

公开(公告)日：2012-07-17

申请号：US12535968

申请日：2009-08-05

Applicant: Ken Tanaka ,  Tsutomu Nakamura ,  Kenji Takeda ,  Masaru Touge ,  Yasuhiro Fukagawa

Inventor： Ken Tanaka ,  Tsutomu Nakamura ,  Kenji Takeda ,  Masaru Touge ,  Yasuhiro Fukagawa

IPC: H02K11/00

CPC classification number: H02K23/66 ,  G01B7/30 ,  G01D5/2006 ,  G01P3/48 ,  H02P6/185 ,  H02P7/0094 ,  H02P2203/03

Abstract: A power supply unit superimposes alternating-current voltage on direct-current voltage and applies it to a motor. As a result, when the motor is rotated, a current containing an alternating-current component flows. Further, the motor includes a capacitor connected in parallel with one phase coil. Owing to this capacitor, the impedance of the motor circuit between brushes is varied according to the rotation of the motor. Variation in impedance appears as variation in the amplitude of the alternating-current component in motor current. A signal processing unit extracts an alternating-current component from the motor current detected by the current detection unit and generates a rotation pulse corresponding to variation in the amplitude. A rotation angle detection unit detects the rotation angle of the motor based on this rotation pulse.

Abstract translation: 电源单元将交流电压叠加在直流电压上并将其施加到电动机。 结果，当马达旋转时，流过含有交流分量的电流。 此外，电动机包括与一相线圈并联连接的电容器。 由于该电容器，电刷之间的电动机电路的阻抗根据电动机的旋转而变化。 阻抗的变化表现为电机电流中交流分量振幅的变化。 信号处理单元从由电流检测单元检测到的电动机电流提取交流分量，并产生与振幅变化相对应的旋转脉冲。 旋转角度检测单元基于该旋转脉冲检测电动机的旋转角度。

公开(公告)号：US20110262112A1

公开(公告)日：2011-10-27

申请号：US12932410

申请日：2011-02-24

Applicant: Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

Inventor： Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

IPC: H02P7/29 ,  H02P3/08 ,  H02P5/50

CPC classification number: H02K11/001 ,  G01P3/48 ,  H02K11/20 ,  H02P7/0094

Abstract: A rotation detecting apparatus for detecting a rotational state of a direct-current motor includes a driving device, a control device, an energization detecting device, an alternating-current component detecting device, and a rotational state detecting device. An impedance between brushes of the motor changes periodically in accordance with rotation of the motor. The alternating-current component detecting device detects change of an alternating-current component of electric current that is supplied to the motor based on an electrical quantity. The change of the alternating-current component is caused by change of the impedance caused in accordance with the rotation. The rotational state detecting device detects at least one of a rotation angle, a rotational direction, and a rotational speed of the motor based on a detection result of the alternating-current component detecting device.

Abstract translation: 用于检测直流电动机的旋转状态的旋转检测装置包括驱动装置，控制装置，通电检测装置，交流分量检测装置和旋转状态检测装置。 马达的电刷之间的阻抗根据马达的转动而周期性地变化。 交流分量检测装置基于电量检测供给到电动机的电流的交流分量的变化。 交流分量的变化是由根据旋转引起的阻抗的变化引起的。 旋转状态检测装置基于交流分量检测装置的检测结果来检测电动机的旋转角度，旋转方向和转速中的至少一个。

公开(公告)号：US20110148258A1

公开(公告)日：2011-06-23

申请号：US12928641

申请日：2010-12-16

Applicant: Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

Inventor： Ken Tanaka ,  Yasuhiro Fukagawa ,  Masaru Touge

IPC: H02K11/00

CPC classification number: H02K23/66

Abstract: A direct current motor includes an armature coil having at least three phase coils, a commutator having multiple commutator segments connected to the armature coil, a pair of brushes in slidable contact with the commutator to supply power to the phase coils through the commutator, a rotation shaft, and a ring varistor coaxially fixed to the rotation shaft and having a ring-shaped varistor body and multiple electrodes that are circumferentially arranged on a surface of the varistor body. Each commutator segment is connected to a corresponding electrode of the ring varistor. The electrodes of the ring varistor are paired to form electrode pairs. Each electrode pair includes any two of the electrodes. A capacitance of one electrode pair is different from a capacitance of another electrode pair.

Abstract translation: 直流电动机包括具有至少三相线圈的电枢线圈，具有连接到电枢线圈的多个换向器段的换向器，与换向器滑动接触的一对电刷，以通过换向器向相线圈供电， 轴和环形变阻器同轴地固定在旋转轴上，并且具有环形可变电阻体和周向布置在可变电阻体的表面上的多个电极。 每个换向器段连接到环形变阻器的相应电极。 环形变阻器的电极配对形成电极对。 每个电极对包括任何两个电极。 一个电极对的电容与另一个电极对的电容不同。

公开(公告)号：US20100289387A1

公开(公告)日：2010-11-18

申请号：US12800354

申请日：2010-05-13

Applicant: Ken Tanaka ,  Kenji Takeda ,  Tsutomu Nakamura ,  Masaru Touge ,  Yuuki Matsumoto

Inventor： Ken Tanaka ,  Kenji Takeda ,  Tsutomu Nakamura ,  Masaru Touge ,  Yuuki Matsumoto

IPC: H02K11/00

CPC classification number: H02K23/66 ,  H02K11/225 ,  H02P7/00 ,  H02P29/0241

Abstract: A rotation detecting apparatus includes a direct-current motor, a power source part, an energization detecting part, and a rotation state detecting part. The direct-current motor is configured so that an inductance between a pair of brushes periodically changes in accordance with a rotation. The power source part applies a power source voltage between the pair of brushes. In the power source voltage, an alternating-current voltage is superimposed on a direct-current voltage. The energization detecting part detects an electric quantity related to the alternating-current voltage applied from the power source part to the direct-current motor. The rotation state detecting part detects at least one of a rotation angle, a rotation direction, and a rotation speed of the direct-current motor based on a change in an amplitude of an alternating-current component in the electric quantity detected by the energization detecting part.

Abstract translation: 旋转检测装置包括直流电动机，电源部，通电检测部和旋转状态检测部。 直流电动机被配置成使得一对电刷之间的电感根据旋转而周期性地变化。 电源部分在一对电刷之间施加电源电压。 在电源电压中，交流电压叠加在直流电压上。 通电检测部检测与从电源部向直流电动机施加的交流电压有关的电量。 旋转状态检测部基于由通电检测检测到的电量中的交流分量的振幅的变化来检测直流电动机的旋转角度，旋转方向和转速中的至少一个 部分。