利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2905 条记录 (耗时 0.023 秒)

    Control circuit of power converter
    1.
    发明授权
    Control circuit of power converter 有权

    公开(公告)号：US12132431B2

    公开(公告)日：2024-10-29

    申请号：US18146812

    申请日：2022-12-27

    申请人： DENSO CORPORATION

    发明人： Kouichi Nishibata

    IPC分类号： H02K17/32 ,  H02K23/68 ,  H02K27/30 ,  H02M7/5387 ,  H02P7/00 ,  H02P27/06 ,  H02P29/024

    CPC分类号： H02P29/0241 ,  H02M7/53871 ,  H02P27/06

    摘要： A control circuit is applied to a system provided with a rotary electric machine, a power converter electrically connected to a winding of the rotary electric machine, a power source, a cutoff switch provided on an electrical path that connects the power source and the power converter, and a storage unit. The control circuit is provided with a failure determination unit that determines whether a failure occurs in the system and a regeneration prevention unit that prevents a power regeneration, where a current flows from a rotary electric machine side towards a storage unit side, from occurring. In the case where the failure determination unit determines that a failure occurs in the system, the cutoff switch is turned OFF after the regeneration prevention unit prevents an occurrence of the power regeneration.

    Control and drive of a rotating machine with an inner and an outer stator
    3.
    发明授权
    Control and drive of a rotating machine with an inner and an outer stator 有权

    公开(公告)号：US12015314B2

    公开(公告)日：2024-06-18

    申请号：US16979395

    申请日：2019-03-06

    申请人： ABB Schweiz AG

    发明人： Minos Beniakar ,  Luca Peretti

    IPC分类号： H02P1/00 ,  H02K11/33 ,  H02K16/04 ,  H02P3/00 ,  H02P7/00

    CPC分类号： H02K16/04 ,  H02K11/33

    摘要： A method for continuous operation of a rotating machine, the method is performed in a rotating machine having an inner stator and an outer stator. The method includes setting a rotating machine reference operational value for the whole rotating machine, obtaining operational parameters for the inner stator and for the outer stator, wherein the operational parameters include magnetic cross-coupling between the inner and outer stators, determining an inner stator reference operational value for the inner stator and an outer stator reference operational value for the outer stator based on the set rotating machine reference operational value for the whole rotating machine and the obtained operational parameters, and driving the rotating machine based on the determined inner stator reference operational value for the inner stator and on the determined outer stator reference operational value for the outer stator, wherein the determined inner stator reference operational value for the inner stator differs from the determined outer stator reference operational value for the outer stator.

    Ripple count circuit including varying ripple threshold detection
    6.
    发明授权
    Ripple count circuit including varying ripple threshold detection 有权

    公开(公告)号：US11705836B2

    公开(公告)日：2023-07-18

    申请号：US17981768

    申请日：2022-11-07

    申请人： INTEVA PRODUCTS FRANCE SAS

    发明人： François Breynaert ,  Simon Herpin

    IPC分类号： H02P7/00 ,  H02P7/285 ,  H03K23/58

    CPC分类号： H02P7/0094 ,  H02P7/2855 ,  H03K23/58

    摘要： A motor control system includes a variable voltage supply in signal communication with a direct current (DC) motor. The DC motor includes a rotor induced to rotate in response to a drive current generated by a variable supply voltage delivered by the voltage supply. The rotation of the rotor 103 generates a mechanical force that drives a component. A ripple count circuit 104 is configured to filter the drive current based on a rotational speed (ω) of the rotor 103 to generate a filtered drive current signal, and to generate a varying threshold based on the filtered drive current signal. Based on a comparison between the filtered drive current signal and the varying threshold, the ripple count circuit 104 generates a pulsed output signal indicative of the rotational speed (ω) of the rotor and a rotational position (θ) of the rotor.

    Transport apparatus and control method
    7.
    发明授权
    Transport apparatus and control method 有权

    公开(公告)号：US11671045B2

    公开(公告)日：2023-06-06

    申请号：US17384492

    申请日：2021-07-23

    申请人： CANON KABUSHIKI KAISHA

    发明人： Hiromu Sekiguchi

    IPC分类号： H02P7/00 ,  H02P21/22 ,  G01R31/389 ,  B65G43/08

    CPC分类号： H02P21/22 ,  B65G43/08 ,  G01R31/389

    摘要： A transport apparatus includes an electric motor having a mover and coils, and a control device that controls the electric motor and includes a measuring unit and a control unit. The coils drives the mover by applying a current to each of the coils. The measuring unit measures an impedance of each coil. The control unit controls the current flowing through each of the coils based on a third current command value in which a first current command value, indicating a current corresponding to a thrust command value indicating a thrust applied to the mover, and a second current command value, indicating a current for measuring the impedance, are superimposed. The control unit determines the second current command value such that the mover does not receive a thrust due to a component corresponding to the second current command value in the current flowing through each coil when measuring the impedance.

    Mechanical arm system and mechanical arm control method
    8.
    发明授权
    Mechanical arm system and mechanical arm control method 有权

    公开(公告)号：US11613011B2

    公开(公告)日：2023-03-28

    申请号：US16927247

    申请日：2020-07-13

    申请人： Delta Electronics, Inc.

    发明人： Ching-Hsiung Tsai ,  Ming-Yang Cheng ,  Chung-Chan Hsu ,  Chia-Hui Chen ,  Hao-Lun Huang ,  Kuan-Shun Chao

    IPC分类号： H02P7/00 ,  B25J9/16 ,  G05B19/23

    摘要： A mechanical arm system includes at least two links, at least two control devices and at least two motor devices. Each of the control devices includes a first control unit, a mechanical arm control unit and a driving unit. The first control unit receives an end-position command to output a first torque signal. The mechanical arm control unit includes a rigid mechanical unit and a mechanical model unit. The rigid mechanical unit receives the first torque signal to obtain a rigid mechanical torque, and the mechanical model unit receives the rigid mechanical torque and operates the flexible mechanical model to establish the mechanical arm model for obtaining the target torque, and the target position signal is output according to the target torque. The driving unit generates a driving signal according to the target position signal to adjust a rotation angle of the corresponding motor device.

    Motor control device
    9.
    发明授权
    Motor control device 有权

    公开(公告)号：US11594988B2

    公开(公告)日：2023-02-28

    申请号：US17009869

    申请日：2020-09-02

    申请人： DENSO CORPORATION

    发明人： Syunji Yamauchi

    IPC分类号： H02P7/00 ,  G01D18/00 ,  G01D5/16

    摘要： A motor control device is a device for controlling a drive of a DC motor which is interlocked with an output shaft portion of an actuator. The motor control device includes: a relative position obtainer detecting current fluctuations when switching a connection between a commutator and a brush in the DC motor or when rotating the DC motor and obtaining relative position information of the output shaft portion; and an absolute position obtainer obtaining absolute position information of the output shaft portion using a potentiometer. The motor control device further includes: an actual position setter setting actual position information of the output shaft portion based on at least one of the absolute position information and the relative position information.