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    Disk drive with parallel head actuation
    3.
    发明授权
    Disk drive with parallel head actuation 有权
    平行磁头驱动的磁盘驱动器

    公开(公告)号：US09361919B1

    公开(公告)日：2016-06-07

    申请号：US14874866

    申请日：2015-10-05

    Applicant: Seagate Technology LLC

    Inventor： Binh Kim Lieu ,  Evgeny Kharisov ,  Kenneth Haapala ,  Raye A. Sosseh

    IPC: G11B21/02 ,  G11B5/55 ,  G11B5/596

    CPC classification number: G11B5/556

    Abstract: An apparatus includes a first read/write head coupled to a first micro actuator, a second read/write head coupled to a second micro actuator, an actuator and a controller. The actuator is coupled to both the first and second micro actuators. The controller is configured to position the first read/write head in response to a first micro actuator control signal and an actuator control signal. Further, the controller is configured to position the second read/write head in response to a second micro actuator control signal and the actuator control signal. The positioning of the first and second read/write heads by the controller is performed substantially simultaneously.

    Abstract translation: 一种装置包括耦合到第一微型致动器的第一读/写头，耦合到第二微致动器的第二读/写头，致动器和控制器。 致动器联接到第一和第二微致动器。 控制器被配置为响应于第一微致动器控制信号和致动器控制信号来定位第一读/写头。 此外，控制器被配置为响应于第二微致动器控制信号和致动器控制信号来定位第二读/写头。 基本上同时执行由控制器定位第一和第二读/写头。

    EFFICIENT ENERGY RECOVERY IN DISK DRIVE DURING POWER LOSS
    4.
    发明申请
    EFFICIENT ENERGY RECOVERY IN DISK DRIVE DURING POWER LOSS 有权
    电力损失期间磁盘驱动器中的有效能源恢复

    公开(公告)号：US20150091475A1

    公开(公告)日：2015-04-02

    申请号：US14039724

    申请日：2013-09-27

    Applicant: Seagate Technology LLC

    Inventor： Binh Kim Lieu ,  Mark Lowell Elliott ,  Raye A. Sosseh

    IPC: H02P23/00

    CPC classification number: H02P3/18 ,  G06F1/263 ,  H02J9/06

    Abstract: A back electromotive force of a rotating motor is converted into a voltage for a load by driving, in accordance with a duty cycle, at least one switching circuit that couples the back electromotive force to a load through a rectifying circuit. An error signal is generated that is a difference between the load voltage and a reference voltage. The duty cycle is controlled as a function of the error signal to cause the load voltage to approach the reference voltage.

    Abstract translation: 旋转电动机的反电动势通过根据占空比通过驱动通过整流电路将反电动势耦合到负载的至少一个开关电路而被转换为负载电压。 产生负载电压和参考电压之差的误差信号。 占空比作为误差信号的函数进行控制，使负载电压接近参考电压。

    Parallel servo control in a data storage device
    5.
    发明授权
    Parallel servo control in a data storage device 有权

    公开(公告)号：US10964345B1

    公开(公告)日：2021-03-30

    申请号：US16881355

    申请日：2020-05-22

    Applicant: Seagate Technology LLC

    Inventor： Kenneth Haapala ,  Binh Kim Lieu ,  Evgeny Kharisov ,  Raye A. Sosseh

    IPC: G11B5/56 ,  G11B5/60 ,  G11B20/10 ,  G11B20/18 ,  G11B20/12 ,  G11B5/55

    Abstract: A data storage device includes a first data storage surface and a second data storage below the first data storage surface. The data storage device also includes a first micro-actuator coupled to a first arm that supports a first head over the first data storage surface, and a second micro-actuator coupled to a second arm that supports a second head over the second data storage surface. The data storage device further includes a coarse actuator, to which the first and second arms are coupled, that positions the first head and the second head between corresponding first and second tracks on the respective first and second data storage surfaces. Micro-actuator drive circuitry finely positions the first head over the first track and the second head over the second track by concurrently driving the first micro-actuator and the second micro-actuator in opposite directions.

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