Method of controlling drive of driving motor for rotary indexing device of machine tool
    1.
    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

    摘要: 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.

    摘要翻译: 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
    2.
    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

    IPC分类号: D05B69/18 D05B69/22 H02P29/04

    CPC分类号: D05B69/22 D05B69/18

    摘要: 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.

    摘要翻译: 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
    4.
    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

    摘要: 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.

    摘要翻译: 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
    6.
    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

    摘要: 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.

    摘要翻译: 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
    7.
    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

    IPC分类号: H02P29/04 H02K7/116

    摘要: 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.

    摘要翻译: 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。

    Thrust reverser control system
    8.
    发明授权
    Thrust reverser control system 有权
    推力反向控制系统

    公开(公告)号:US09482183B2

    公开(公告)日:2016-11-01

    申请号:US14527112

    申请日:2014-10-29

    申请人: AIRCELLE

    摘要: A control system for a thrust reverser with a movable cowl includes an electromechanical actuator to actuate the movable cowl, an electric drive unit (M) driving the actuator, and a power control unit capable of controlling the electric drive unit (M). The power control unit moves the movable cowl to a closed position and/or to a deployed position. In particular, the control system includes an electronic circuit for electric braking capable of braking the electric drive unit (M), in case of overspeed of the drive unit when the movable cowl is moved to the closed position and/or to the deployed position.

    摘要翻译: 用于具有可动罩的推力反向器的控制系统包括用于致动可动罩的机电致动器,驱动致动器的电驱动单元(M)和能够控制电驱动单元(M)的功率控制单元。 动力控制单元将可移动整流罩移动到关闭位置和/或展开位置。 具体而言,当可移动导向罩移动到关闭位置和/或展开位置时,控制系统包括用于电动制动的电子电路,用于制动电驱动单元(M),在驱动单元超速的情况下。

    Automatic transmission for a power tool
    10.
    发明授权
    Automatic transmission for a power tool 有权
    电动工具的自动变速器

    公开(公告)号:US08303449B2

    公开(公告)日:2012-11-06

    申请号:US12336075

    申请日:2008-12-16

    摘要: A transmission assembly is powered by an electric motor and includes a transmission having an outer ring gear, a connector moveable relative to the outer ring gear between a first position, in which the connector is rotatable with the transmission in response to torque received from the motor, and a second position, in which the connector and the outer ring gear are non-rotatable, and a control mechanism operable to detect the operating current of the motor and compare the operating current to a threshold current. The control mechanism is operable to move the connector from the first position to the second position in response to the motor operating current exceeding the threshold current.

    摘要翻译: 变速器组件由电动机驱动,并且包括具有外齿圈的变速器,可在第一位置和第二位置之间移动的连接件,其中连接器可响应于从电动机接收的转矩而与变速器一起旋转 以及第二位置,其中连接器和外圈齿轮是不可旋转的;以及控制机构,其可操作以检测电动机的工作电流并将工作电流与阈值电流进行比较。 控制机构可操作以响应于电动机工作电流超过阈值电流而将连接器从第一位置移动到第二位置。