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    MOTOR DRIVE CONTROL DEVICE, FAN AND MOTOR DRIVE CONTROL METHOD
    1.
    发明公开
    MOTOR DRIVE CONTROL DEVICE, FAN AND MOTOR DRIVE CONTROL METHOD 审中-公开

    公开(公告)号：US20230374995A1

    公开(公告)日：2023-11-23

    申请号：US18356390

    申请日：2023-07-21

    Applicant: MINEBEA MITSUMI Inc.

    Inventor： Masato AOKI ,  Yuji OMURA ,  Takahiro SUZUKI

    IPC: F04D27/00 ,  F04D25/06 ,  H02P29/04

    CPC classification number: F04D27/004 ,  F04D25/06 ,  H02P29/045 ,  F04D29/66

    Abstract: A motor drive control device has a control circuit that generates a drive control signal for controlling a rotational speed of a motor based on a speed command signal indicating a target rotational speed of the motor, and a motor driving unit that drives the motor based on the drive control signal. The control circuit performs speed feedback control for generating the drive control signal so that the rotational speed of the motor coincides with the target rotational speed when the target rotational speed is lower than a rotational speed threshold value, and generates the drive control signal based on a relationship between current flowing through the motor and a reference current value when the target rotational speed is higher than the rotational speed threshold value.

    Method of controlling drive of driving motor for rotary indexing device of machine tool
    2.
    发明授权
    Method of controlling drive of driving motor for rotary indexing device of machine tool 有权
    机床旋转分度装置驱动电机驱动方法

    公开(公告)号：US07634955B2

    公开(公告)日：2009-12-22

    申请号：US11946494

    申请日：2007-11-28

    Applicant: Haruo Osaki ,  Takeshi Yonenaga

    Inventor： Haruo Osaki ,  Takeshi Yonenaga

    IPC: B23B29/24 ,  B23Q16/02 ,  B23Q17/00 ,  G06F19/00 ,  B23Q5/10 ,  B23Q5/28 ,  H02K17/32 ,  H02K23/68 ,  H02K27/30 ,  H02P29/04 ,  B25B1/22

    CPC classification number: G05B19/402 ,  Y10T29/5155 ,  Y10T74/1435 ,  Y10T74/1488 ,  Y10T74/1494

    Abstract: A method of controlling drive of a driving motor for a rotary indexing device is provided. The device includes an indexing mechanism that indexes an angular position of a circular table by rotating the circular table with the use of the driving motor as a driving source, a clamping mechanism that holds the indexed angular position, and a control unit that controls drive of the driving motor by position control. In the method, the control unit controls the drive of the driving motor during operation of the clamping mechanism with a content of control in which an output torque of the driving motor by the position control becomes smaller than an output torque by the position control during indexing of the angular position of the circular table for an equivalent positional deviation.

    Abstract translation: 提供一种控制用于旋转分度装置的驱动电动机的驱动方法。 该装置包括一个分度机构，用于通过使用驱动电动机作为驱动源旋转圆桌来定位圆桌的角位置，保持分度角位置的夹持机构和控制单元， 驱动电机通过位置控制。 在该方法中，控制单元通过控制内容来控制驱动电动机的驱动，其中，通过位置控制，驱动电动机的输出转矩变得小于通过分度时的位置控制的输出转矩 的圆形台的角位置用于等效的位置偏差。

    Speed control apparatus for sewing machine
    3.
    发明授权
    Speed control apparatus for sewing machine 失效
    缝纫机调速装置

    公开(公告)号：US4648339A

    公开(公告)日：1987-03-10

    申请号：US739259

    申请日：1985-05-30

    Applicant: Katsuhiro Fujikawa

    Inventor： Katsuhiro Fujikawa

    IPC: D05B69/18 ,  D05B69/22 ,  H02P29/04

    CPC classification number: D05B69/22 ,  D05B69/18

    Abstract: A sewing machine speed control apparatus enabling finer control of sewing machine rotational speed by providing speed instructive pulses to a clutch coil and a braking coil of the sewing machine within a pulse application period of an oscillator used to detect the actual rotational speed of the sewing machine. The speed instructive pulses are applied in accordance with a difference between actual and desired speeds; the difference is used to look up stored values corresponding to desired periods of application of speed instructive pulses.

    Abstract translation: 一种缝纫机速度控制装置，其能够在用于检测缝纫机的实际旋转速度的振荡器的脉冲施加期间内向缝纫机的离合器线圈和制动线圈提供速度指示脉冲，从而更好地控制缝纫机转速 。 速度指令脉冲根据实际速度和期望速度之间的差值进行施加; 该差异用于查找对应于期望的速度指令脉冲的施加周期的存储值。

    Short circuit detection circuit and short circuit detection method for multi-phase rectifier at frequency domain
    6.
    发明授权
    Short circuit detection circuit and short circuit detection method for multi-phase rectifier at frequency domain 有权
    频域多相整流器短路检测电路及短路检测方法

    公开(公告)号：US09543886B2

    公开(公告)日：2017-01-10

    申请号：US14297650

    申请日：2014-06-06

    Applicant: ACTRON TECHNOLOGY CORPORATION

    Inventor： Chi-Kai Wu ,  Chia-Sung Yu ,  Chih-Chun Lu

    IPC: H02H7/10 ,  H02P29/04 ,  G01R31/02 ,  H02P1/04 ,  H02P9/48 ,  G01R31/40 ,  H02P101/45

    CPC classification number: H02P29/04 ,  G01R31/025 ,  G01R31/40 ,  H02P1/04 ,  H02P9/48 ,  H02P29/0243 ,  H02P2101/45

    Abstract: A short circuit detection circuit and a short circuit detection method for a multi-phase rectifier are provided, which are used for detecting conditions of a spectrum of a FWR signal outputted from the multi-phase rectifier in the frequency domain. Next, determining whether the detected signal indicating the amplitude of the frequency of the AC signal is greater than or equal to the reference signal, so as to determine whether the multi-phase rectifier has a short circuit condition. Therefore, the short circuit detection circuit and the short circuit detection method do not have any requirements for configuring a short circuit detection element on each current path of the multi-phase rectifier, so that the power loss and the cost can be reduced effectively.

    Abstract translation: 提供一种用于多相整流器的短路检测电路和短路检测方法，用于检测在频域中从多相整流器输出的FWR信号的频谱条件。 接下来，确定表示AC信号的频率的幅度的检测信号是否大于或等于参考信号，以便确定多相整流器是否具有短路状态。 因此，短路检测电路和短路检测方法对于在多相整流器的各电流路径上配置短路检测元件没有任何要求，能够有效地降低功率损耗和成本。

    Hoist with Overspeed Protection
    8.
    发明申请
    Hoist with Overspeed Protection 有权
    起重机超速保护

    公开(公告)号：US20100237306A1

    公开(公告)日：2010-09-23

    申请号：US12554186

    申请日：2009-09-04

    Applicant: Lawrence L. Eschelbacher ,  Peter V. Svitavsky

    Inventor： Lawrence L. Eschelbacher ,  Peter V. Svitavsky

    IPC: B66D1/48 ,  H02P29/04 ,  B66D1/12 ,  B66D1/40

    CPC classification number: B66D1/54 ,  B66D1/12 ,  B66D1/14 ,  B66D5/30

    Abstract: A hoist system with an overspeed detection sub-system for detecting overspeed by comparing an actual drum assembly speed with a target value. For example, the rotation of a motor may be determined by a first rotary encoder and the rotation of a drum may be determined by a second rotary encoder. The output of the first rotary encoder (the basis of a target value) is compared with the output of the second rotary encoder (corresponding to actual motion of the drum). If the difference between the target value and the actual motion is too large, then a problem, such as a broken hoist hardware component may exist, and appropriate remedial action is taken, such as braking the motor and/or the drum.

    Abstract translation: 具有超速检测子系统的提升系统，用于通过将实际的鼓组件速度与目标值进行比较来检测超速。 例如，马达的旋转可由第一旋转编码器确定，并且滚筒的旋转可由第二旋转编码器确定。 将第一旋转编码器的输出（目标值的基准）与第二旋转编码器的输出（对应于滚筒的实际运动）进行比较。 如果目标值与实际运动之间的差异太大，则可能存在诸如破碎的起重机硬件部件之类的问题，并且采取适当的补救措施，例如制动马达和/或滚筒。

    ELECTRIC MOTOR AND AN ACTUATOR HAVING THE SAME
    9.
    发明申请
    ELECTRIC MOTOR AND AN ACTUATOR HAVING THE SAME 有权
    电机和具有该电机的执行机构

    公开(公告)号：US20090058208A1

    公开(公告)日：2009-03-05

    申请号：US12203359

    申请日：2008-09-03

    Applicant: Kiyoshi KIMURA ,  Shigeru Yoshiyama

    Inventor： Kiyoshi KIMURA ,  Shigeru Yoshiyama

    IPC: H02P29/04 ,  H02K7/116

    CPC classification number: H02K5/1732 ,  F16H61/32 ,  H02K5/24 ,  H02K15/16

    Abstract: In an electric motor of an SBW actuator, a rotor shaft is rotated upon energization of the motor. A rotor core is rotated integrally with the rotor shaft. A resilient member enables tilting or decentering of the rotor shaft upon application of a decentering force on the rotor shaft. A stator core contacts the rotor core when the rotor shaft is tilted or decentered.

    Abstract translation: 在SBW致动器的电动机中，转子轴在电动机通电时旋转。 转子芯与转子轴一体旋转。 弹性构件能够在转子轴上施加偏心力时使转子轴倾斜或偏心。 当转子轴倾斜或偏心时，定子芯与转子芯接触。

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