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    Data storage device optimizing spindle motor power when transitioning into a power failure mode
    2.
    发明授权
    Data storage device optimizing spindle motor power when transitioning into a power failure mode 有权

    公开(公告)号：US09761266B2

    公开(公告)日：2017-09-12

    申请号：US14987581

    申请日：2016-01-04

    申请人： Western Digital Technologies, Inc.

    发明人： Michael T. Nicholls

    IPC分类号： G11B5/09 ,  G11B19/20 ,  G11B21/12

    CPC分类号： G11B19/20 ,  G11B19/2081 ,  G11B21/12

    摘要： A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk, wherein the spindle motor comprises a plurality of windings. The windings of the spindle motor are commutated based on a commutation sequence while applying a driving voltage to each winding, wherein the driving voltage comprises an operating polarity during normal operation. When a supply voltage falls below a threshold while the spindle motor is rotating the disk, the spindle motor is configured into a power generator by at least reversing the polarity of the driving voltage for an interval and then reversing the polarity of the driving voltage back to the operating polarity.

    STORAGE APPARATUS, IMAGE FORMING APPARATUS, ABNORMALITY DETECTING METHOD BY INSTANTANEOUS POWER FAILURE OF HARD DISK, AND ABNORMALITY RECOVERY METHOD THEREOF
    4.
    发明申请
    STORAGE APPARATUS, IMAGE FORMING APPARATUS, ABNORMALITY DETECTING METHOD BY INSTANTANEOUS POWER FAILURE OF HARD DISK, AND ABNORMALITY RECOVERY METHOD THEREOF 有权
    存储设备，图像形成装置，硬盘故障电源故障异常检测方法及异常恢复方法

    公开(公告)号：US20150248920A1

    公开(公告)日：2015-09-03

    申请号：US14634778

    申请日：2015-02-28

    申请人： KYOCERA DOCUMENT SOLUTIONS INC.

    发明人： Naruyuki MIYAMOTO

    IPC分类号： G11B27/36 ,  G01R31/40 ,  G01R19/00

    CPC分类号： G11B19/047 ,  G01R19/0084 ,  G01R19/165 ,  G01R31/40 ,  G06F1/305 ,  G11B19/2081 ,  G11B27/36 ,  G11B2220/2516 ,  H02H3/247

    摘要： Provided is a storage apparatus that prevents impossible to communicate a hard disk and a CPU by the instantaneous power failure of a low voltage power supply. An effective value reduction detecting circuit transmits a detection signal, when the voltage of a low voltage power supply is lower than specific voltage. CPU memorizes time t1 to a flash memory. Also, CPU memorizes time t2, when recovering low voltage power supply 13 on proper voltage. Then, CPU computes period of time T, which is time between time t1 and t2. If the computed period of time T is within a range from first period of time T1 to the second period of time T2, CPU operates a voltage switch and re-supply the power supply to the hard disk. If not within the range, CPU does not re-supplying power to the hard disk.

    摘要翻译： 提供了一种防止由低电压电源的瞬时停电而不能使硬盘和CPU通信的存储装置。 当低电压电源的电压低于特定电压时，有效值降低检测电路发送检测信号。 CPU将时间t1记忆到闪存。 此外，当在适当的电压下恢复低压电源13时，CPU记忆时间t2。 然后，CPU计算时间T，这是时间t1和t2之间的时间。 如果计算出的时间段T在从第一时间段T1到第二时间段T2的范围内，则CPU进行电压切换并将电源重新供给到硬盘。 如果不在该范围内，则CPU不会重新向硬盘供电。

    Data storage device reducing spindle motor voltage boost during power failure
    5.
    发明授权
    Data storage device reducing spindle motor voltage boost during power failure 有权
    数据存储设备在停电时减少主轴电机电压提升

    公开(公告)号：US08922940B1

    公开(公告)日：2014-12-30

    申请号：US14287550

    申请日：2014-05-27

    申请人： Western Digital Technologies, Inc.

    发明人： Timothy A. Ferris

    IPC分类号： G11B21/02 ,  G11B5/596 ,  G11B19/04 ,  G11B19/28

    CPC分类号： G11B19/2081 ,  G11B21/12

    摘要： A data storage device is disclosed comprising a head actuated over a disk, a spindle motor configured to rotate the disk, and control circuitry configured to perform a power fail operation by boosting a power voltage generated based on the spindle motor to generate a boosted voltage, controlling an operation of the data storage device using the boosted voltage, and when the power voltage falls below a threshold, reducing the boosting so as to reduce the boosted voltage.

    摘要翻译： 公开了一种数据存储装置，包括：盘驱动的磁头，被配置为旋转磁盘的主轴电动机;以及控制电路，其被配置为通过升高基于主轴电动机产生的电力电压来执行电力故障操作，以产生升压电压， 使用升压电压控制数据存储装置的动作，当电源电压低于阈值时，减小升压，降低升压电压。

    Data storage device optimizing spindle motor power when transitioning into a power failure mode
    8.
    发明授权
    Data storage device optimizing spindle motor power when transitioning into a power failure mode 有权
    数据存储设备在转换到停电模式时优化主轴电机功率

    公开(公告)号：US09230593B1

    公开(公告)日：2016-01-05

    申请号：US14582068

    申请日：2014-12-23

    申请人： Western Digital Technologies, Inc.

    发明人： Michael T. Nicholls

    IPC分类号： G11B15/22 ,  G11B19/28

    CPC分类号： G11B19/20 ,  G11B19/2081 ,  G11B21/12

    摘要： A data storage device is disclosed comprising a spindle motor configured to rotate a disk, wherein the spindle motor comprises a plurality of windings. The windings are commutated based on a commutation sequence while applying a driving voltage to each winding, wherein the driving voltage comprises an operating amplitude during normal operation. When a supply voltage falls below a threshold, the spindle motor is configured into a power generator by at least reducing the amplitude of the driving voltage to substantially zero and then incrementally increasing the amplitude of the driving voltage by at least two steps toward the operating amplitude.

    摘要翻译： 公开了一种数据存储装置，其包括被配置为旋转盘的主轴马达，其中所述主轴马达包括多个绕组。 绕组根据换向顺序进行换向，同时向每个绕组施加驱动电压，其中驱动电压包括在正常工作期间的工作幅度。 当电源电压低于阈值时，主轴电动机通过至少将驱动电压的幅度降至基本为零，然后将驱动电压的振幅逐渐增加至操作振幅的两个步长，将其配置成发电机 。

    Regulating distribution of power in a hard disk drive following a power loss
    9.
    发明授权
    Regulating distribution of power in a hard disk drive following a power loss 有权
    在断电后调节硬盘驱动器中的电源分配

    公开(公告)号：US08854765B2

    公开(公告)日：2014-10-07

    申请号：US13781908

    申请日：2013-03-01

    申请人： STMicroelectronics Asia Pacific Pte. Ltd. ,  STMicroelectronics S.r.l.

    发明人： Frederic Bonvin ,  Davide Betta ,  Seng-Chean Hong

    IPC分类号： G11B21/02 ,  G11B33/12

    CPC分类号： G11B19/047 ,  G06F1/30 ,  G11B19/2072 ,  G11B19/2081

    摘要： Applicant has recognized and appreciated the desirability of powering an actuator using power drawn from one or both of an energy storage device and a spindle motor. In some embodiments, following a loss of external power to a hard disk drive, the hard disk drive (or one or more components thereof) determines whether to provide the actuator with power drawn from the spindle motor or to provide the actuator with power drawn from the spindle motor and from the energy storage device. In some embodiments, the hard disk drive (or the component(s) thereof) may additionally or alternatively determine whether to charge the energy storage device using power drawn from the spindle motor. In some embodiments, the drive may make the determinations based on an amount of power that the actuator is to consume at a time and an amount of power that the spindle motor can provide at the time.

    摘要翻译： 申请人已经认识到并且认识到使用从能量存储装置和主轴电动机中的一个或两个引出的功率来驱动致动器的可取性。 在一些实施例中，在硬盘驱动器的外部电力损失之后，硬盘驱动器（或其一个或多个部件）确定是否向主动器提供从主轴电动机提取的功率，或向致动器提供从 主轴电机和储能装置。 在一些实施例中，硬盘驱动器（或其组件）可另外或替代地确定是否使用从主轴电动机抽取的功率对能量存储装置进行充电。 在一些实施例中，驱动器可以基于执行器一次消耗的功率量和主轴电机在此时可提供的功率量来进行确定。

    Management apparatus of a rotating motor and an annexed load during power loss
    10.
    发明授权
    Management apparatus of a rotating motor and an annexed load during power loss 有权
    断电时旋转电机的管理装置和附加负载

    公开(公告)号：US08659250B2

    公开(公告)日：2014-02-25

    申请号：US13330410

    申请日：2011-12-19

    申请人： Giuseppe Maiocchi ,  Ezio Galbiati

    发明人： Giuseppe Maiocchi ,  Ezio Galbiati

    IPC分类号： H02P6/18

    CPC分类号： G11B21/12 ,  G11B5/54 ,  G11B19/2081

    摘要： A management apparatus is described of a rotating motor and a load during power loss; the apparatus comprises a first switching circuit coupled with the rotating motor and a controller of said first switching circuit. The controller is configured to drive the first switching circuit so as to convert a back-electromotive force voltage developed in the rotating motor into a power supply voltage for the load. The first switching circuit is driven in accordance with a first duty cycle. The apparatus comprises a second switching circuit coupled with the load and driven in accordance with a second duty cycle. The controller is configured to vary said first and said second duty cycles to keep the power supply voltage for the load above or equal to a threshold voltage.

    摘要翻译： 在停电期间描述了旋转电动机和负载的管理装置; 该装置包括与旋转电动机耦合的第一开关电路和所述第一开关电路的控制器。 控制器被配置为驱动第一开关电路，以将在旋转电动机中产生的反电动势电压转换为负载的电源电压。 第一开关电路根据第一占空比被驱动。 该装置包括与负载耦合并根据第二占空比驱动的第二开关电路。 控制器被配置为改变所述第一和所述第二占空比以将负载的电源电压保持在高于或等于阈值电压。