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    SHUTDOWN METHOD FOR MOTOR AND MOTOR DRIVE CIRCUIT THEREOF
    5.
    发明申请
    SHUTDOWN METHOD FOR MOTOR AND MOTOR DRIVE CIRCUIT THEREOF 有权

    公开(公告)号：US20170085210A1

    公开(公告)日：2017-03-23

    申请号：US14989832

    申请日：2016-01-07

    Applicant: ANPEC ELECTRONICS CORPORATION

    Inventor： MING-JUNG TSAI

    IPC: H02P29/024 ,  H02P3/22

    CPC classification number: H02P29/0241 ,  H02P3/08 ,  H02P3/18 ,  H02P3/22 ,  H02P6/24

    Abstract: Disclosed are a shutdown method for motor and a motor driving circuit using the same. The method comprises: shutting down a higher gate switch and a lower gate switch when a supply voltage decreases, such that the storage capacitor is charged via a back electromotive force, wherein the back electromotive force decreases as the motor gradually stops; driving the motor when the voltage of the storage capacitor is again larger than the first threshold voltage; determining whether the voltage of the storage capacitor is lower than a shutdown threshold voltage when the voltage of the storage capacitor is lower than the first threshold voltage, wherein the shutdown threshold voltage is lower than the first threshold voltage; and turning on the lower gate switch when the voltage of the first threshold voltage is lower than the shutdown threshold voltage, wherein the back current is related to the back electromotive force.

    Motor drive device, magnetic disk storage device, and electronic device
    8.
    发明授权
    Motor drive device, magnetic disk storage device, and electronic device 有权
    电机驱动装置，磁盘存储装置和电子装置

    公开(公告)号：US09142248B2

    公开(公告)日：2015-09-22

    申请号：US13857595

    申请日：2013-04-05

    Applicant: ROHM CO., LTD.

    Inventor： Yoshito Otaguro

    IPC: G11B19/20 ,  H02P6/14 ,  H02P25/02 ,  H02P6/08 ,  G11B19/00 ,  G11B19/28 ,  H02P3/08

    CPC classification number: G11B19/2081 ,  G11B19/00 ,  G11B19/28 ,  H02P3/08 ,  H02P6/08 ,  H02P6/14 ,  H02P25/028 ,  H02P25/034

    Abstract: A motor drive device has a spindle motor driver adapted to receive electric power from a power supply line to drive a spindle motor; an isolation switch adapted to connect and disconnect an application terminal of a power supply voltage to and from the power supply line, and a current monitor adapted to monitor a first current flowing into the isolation switch. The current monitor includes a mirror switch arranged to connect a first terminal of the mirror switch to the application terminal of the power supply voltage and adapted to be turned on and off by the same control signal as the isolation switch; a bias generator adapted to bias a second terminal of the mirror switch to the same voltage as the power supply line; a resistor which converts a second current flowing into the mirror switch into a first voltage; and a current limit signal generator adapted to compare at least one of the first voltage, a second voltage obtained by level-shifting the first voltage, and a third voltage obtained by dividing the first voltage with a predetermined threshold voltage to generate a current limit signal.

    Abstract translation: 电机驱动装置具有主轴电动机驱动器，其适于从电源线接收电力以驱动主轴电动机; 隔离开关，其适于将电源电压的施加端子与电源线连接和断开;以及电流监视器，适于监视流入隔离开关的第一电流。 电流监视器包括一个反射镜开关，其被配置为将反射镜开关的第一端子连接到电源电压的应用端子，并且适于通过与隔离开关相同的控制信号来接通和断开; 偏置发生器，其适于将所述反射镜开关的第二端子偏压到与所述电源线相同的电压; 将流入反射镜的第二电流转换成第一电压的电阻; 以及电流限制信号发生器，其适于比较所述第一电压，通过电平移位所述第一电压获得的第二电压和通过将所述第一电压除以预定阈值电压而获得的第三电压中的至少一个，以产生电流限制信号 。

    Method for moving an element, which is driven by an electric motor inside a predetermined movement section between two block positions each formed as a limit stop, into a block position
    10.
    发明授权
    Method for moving an element, which is driven by an electric motor inside a predetermined movement section between two block positions each formed as a limit stop, into a block position 有权
    用于将由电动机驱动的元件移动到块状位置的方法，所述元件由预定运动部分内的每个形成为限位挡块的两个块位置之间驱动

    公开(公告)号：US08803463B2

    公开(公告)日：2014-08-12

    申请号：US13680192

    申请日：2012-11-19

    Applicant: Leopold Kostal GmbH & Co. KG

    Inventor： Stefan Otte ,  Matthias Steinbach

    IPC: H02P3/00 ,  H02P7/29 ,  H02P3/06 ,  E05F15/16 ,  H02P7/00 ,  H02P3/08

    CPC classification number: H02P3/06 ,  E05F15/695 ,  E05Y2400/336 ,  E05Y2400/354 ,  E05Y2400/36 ,  E05Y2800/73 ,  E05Y2800/74 ,  E05Y2900/55 ,  H02P3/08 ,  H02P7/0094 ,  H02P7/29

    Abstract: A method for moving a movable element into a block position includes providing a supply voltage to an electric motor associated with the movable element for the motor to generate a motor current and drive the element with motor power dependent on the motor current in order to move the element along a path. Upon the element being moved into a block position of the path, the supply voltage provided to the motor is controlled such that the motor current generated by the motor is continuously reduced over a time period to zero. For instance, the supply voltage is pulse-width modulated at a decreasing pulse duty ratio over the time period such that the motor current generated by the motor is continuously reduced over the time period to zero.

    Abstract translation: 用于将可移动元件移动到块位置的方法包括向与电动机相关联的电动马达提供电动马达的电动机以产生电动机电流，并且根据电动机电流驱动具有电动机功率的元件，以便移动 元素沿着路径。 当元件移动到路径的块位置时，提供给电动机的电源电压被控制，使得由电动机产生的电动机电流在一段时间内持续地减小到零。 例如，电源电压在脉冲占空比减小的脉冲宽度下进行脉冲宽度调制，使电动机产生的电动机电流在时间段内持续减少到零。

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