公开(公告)号：US20100284113A1

公开(公告)日：2010-11-11

申请号：US12436715

申请日：2009-05-06

申请人： Tomokazu Ishii ,  Seong Woo Kang ,  Seungman Chang ,  Chaw-Wu Tseng

发明人： Tomokazu Ishii ,  Seong Woo Kang ,  Seungman Chang ,  Chaw-Wu Tseng

IPC分类号： G11B5/54 ,  G11B21/16

CPC分类号： G11B21/22

摘要： This application discloses a Load-UnLoad (LUL) hard disk drive comprising a disk base, a spindle motor mounted on the disk base for rotating at least one disk to create at least one rotating disk surface, and a head stack assembly pivotably coupled to the disk base and configured to engage an actuator latch when the sliders of the head stack assembly are to be parked. The actuator latch includes a latch beam coupled through a latch pivot to the disk base and a boss coupled to the latch beam and configured to limit the stroke of latch motion in the event of a rotary non-operational shock.

摘要翻译： 该应用公开了一种Load-UnLoad（LUL）硬盘驱动器，其包括盘基座，安装在盘基座上的主轴马达，用于旋转至少一个盘以产生至少一个旋转盘表面;以及头堆叠组件，其可枢转地联接到 盘基座并且构造成当头堆叠组件的滑块停放时接合致动器闩锁。 致动器闩锁包括通过闩锁枢轴连接到盘基座的闩锁梁和联接到闩锁梁的凸台，并且构造成在旋转非操作冲击的情况下限制闩锁运动的行程。

公开(公告)号：US20090195901A1

公开(公告)日：2009-08-06

申请号：US12012858

申请日：2008-02-05

申请人： Yanning Liu ,  Seong Woo Kang ,  Seungman Chang

发明人： Yanning Liu ,  Seong Woo Kang ,  Seungman Chang

IPC分类号： G11B27/36

CPC分类号： G11B27/36 ,  G11B2220/2516

摘要： A hard disk drive with a voice coil motor coupled to a head. The head moves relative to a disk. The voice coil motor receives a biasing voltage and has a back emf voltage. A test circuit is coupled to the voice coil motor to determine the back emf voltage. The back emf voltage can be used to analyze low frequency vibration in the disk drive. The test circuit can be constructed so that the back emf voltage is proportional to a pair of test resistors and/or a pair of test inductors. The biasing voltage allows the back emf voltage to be measured and analyzed while the head is at any location from the ID to the OD of the disk.

摘要翻译： 具有耦合到头部的音圈电机的硬盘驱动器。 头相对于磁盘移动。 音圈电机接收偏置电压并具有反电动势电压。 测试电路耦合到音圈电机以确定反电动势电压。 后端电动势可用于分析磁盘驱动器中的低频振动。 测试电路可以被构造成使得反电动势电压与一对测试电阻器和/或一对测试电感器成比例。 偏置电压允许在磁头位于磁盘的ID到OD的任何位置时测量和分析反电动势电压。

公开(公告)号：US07298592B2

公开(公告)日：2007-11-20

申请号：US10854257

申请日：2004-05-27

申请人： Haeng-soo Lee ,  Seong-woo Kang ,  Young-hoon Kim

发明人： Haeng-soo Lee ,  Seong-woo Kang ,  Young-hoon Kim

IPC分类号： G11B5/54

CPC分类号： G11B33/121 ,  G11B5/5526 ,  G11B25/043

摘要： Provided is an actuator of a disk drive to move a read/write head, for recording and reproducing data, to a predetermined position on a disk. The actuator includes an actuator pivot installed on a base member of the disk drive, a swing arm that is rotatably coupled to the actuator pivot and has a suspension supporting the head at a leading end portion of the swing arm, a coil support portion provided at a rear end portion of the swing arm, a VCM coil coupled to the coil support portion and having four sections having respective particular directions, and magnets arranged to face the VCM coil and having four poles respectively corresponding to the four sections of the VCM coil.

摘要翻译： 提供了用于将用于记录和再现数据的读/写头移动到盘上的预定位置的盘驱动器的致动器。 所述致动器包括安装在所述盘驱动器的基座构件上的致动器枢轴，可旋转地联接到所述致动器枢轴的摆臂，并且具有在所述摆臂的前端部处支撑所述头部的悬架;线圈支撑部， 摆动臂的后端部分，连接到线圈支撑部分并且具有具有各自特定方向的四个部分的VCM线圈，以及布置成面对VCM线圈并且具有分别对应于VCM线圈的四个部分的四个磁极的磁体。

公开(公告)号：US07031095B2

公开(公告)日：2006-04-18

申请号：US10903720

申请日：2004-07-29

申请人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

发明人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/596

摘要： The invention applies to servo controllers for at least the voice coil motor of a hard disk drive. Today, many control algorithms require 80 to 90 percent of the sampling period to complete their calculation of the next control, making computation time delay no longer negligible. The invention accommodates the transport delay, such as computation time delay, into the state estimator and into the whole control system. Experimental results using a commercial hard drive, as well as simulation results, show that the invention's method effectively improves the hard disk drive control system stability by increasing the phase margin and gain margin. The invention includes the method of operating the servo-controller, as well as the apparatus implementing that method. The invention also includes hard disk drives containing servo-controllers implementing the method, and program systems residing in accessibly coupled memory to a computer within the servo controller implementing the method.

公开(公告)号：US20050007702A1

公开(公告)日：2005-01-13

申请号：US10619163

申请日：2003-07-10

申请人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

发明人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

IPC分类号： G11B21/02 ,  G11B5/55 ,  G11B5/48

CPC分类号： G11B5/5552 ,  G11B5/4873 ,  G11B5/6011

摘要： Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms for moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention.

摘要翻译： 提供了改进的头万向节组件，减少了硬盘驱动器中的TMR（跟踪错位）。 这些头万向架组件与当代头万向架组件一样机械简单，在平盘表面上支撑平行的飞行滑块，并减少由磁盘振动引起的TMR。 与其他已知方法相比，其轨迹密度和转速可比较容易构建，更可靠，成本更低。 改进的头万向节组件包括三组机构，用于当盘表面平坦时平行于盘表面移动滑块，并且当盘表面弯曲时使滑块朝向轨道径向移动。 第一和第三机构以及第二和第三机构可以一起用在头部万向架组件中。 改进和独特的伺服控制器方案导致PES性能的总体改进，特别是当应用于采用本发明的TMR减小机构的硬盘驱动器时。 伺服控制器在磁盘振动频率范围内取消增益，有利于提高低频干扰的抑制。 当应用于具有本发明的TMR减少机制的硬盘驱动器时，这导致最低的PES统计。

公开(公告)号：US20100232068A1

公开(公告)日：2010-09-16

申请号：US12402418

申请日：2009-03-11

申请人： Bill Wang ,  Kelly Williams ,  Seong Woo Kang ,  Bong Jin Lee

发明人： Bill Wang ,  Kelly Williams ,  Seong Woo Kang ,  Bong Jin Lee

IPC分类号： G11B5/48

CPC分类号： G11B5/59633 ,  G11B5/59638 ,  G11B25/043

摘要： A disk hard disk drive that includes a spindle motor and an actuator arm coupled to a base plate. A plurality of disks are coupled to the spindle motor and a plurality of heads are coupled to the actuator arm and the disks. The drive also includes a cover attached to the base plate. The cover and base plate enclose a hard disk area that has a horizontal center line. The hard disk area includes a volume of air above the horizontal center line that is equal to a volume of air below the horizontal center line. The air space within the hard disk area is equal and symmetrical in a vertical direction. Such an arrangement reduces track mis-registration when servo is copied from a disk surface to the other surfaces of the disks in the drive.

摘要翻译： 盘式硬盘驱动器，其包括主轴电机和联接到基板的致动器臂。 多个盘联接到主轴电机，并且多个磁头联接到致动器臂和磁盘。 驱动器还包括附接到基板的盖。 盖板和底板包围一个具有水平中心线的硬盘区域。 硬盘区域包括在水平中心线上方的等于在水平中心线下方的空气体积的空气体积。 硬盘区域内的空气空间在垂直方向上相等和对称。 当伺服从盘表面复制到驱动器中的盘的其它表面时，这种布置减少了轨迹误配准。

公开(公告)号：US07630167B2

公开(公告)日：2009-12-08

申请号：US10842798

申请日：2004-05-10

申请人： Haesung Kwon ,  Hyung Jai Lee ,  Seong-Woo Kang ,  Yun-Sik Han

发明人： Haesung Kwon ,  Hyung Jai Lee ,  Seong-Woo Kang ,  Yun-Sik Han

IPC分类号： G11B33/14 ,  G11B5/00

CPC分类号： G11B23/505

摘要： A hard disk drive that includes an optical pick-up coupled to a head of a hard disk assembly (“HDA”). The head is located adjacent to a disk. The optical pick-up can sense the surface of the disk by detecting light reflected from the surface. The optical pick-up is coupled to a particle circuit that can distinguish between an embedded particle and a floating particle from the reflected light.

摘要翻译： 硬盘驱动器，其包括耦合到硬盘组件（“HDA”）的头部的光学拾取器。 磁头位于磁盘附近。 光学拾取器可以通过检测从表面反射的光来感测盘的表面。 光学拾取器耦合到可以将嵌入的颗粒和浮动颗粒与反射光区分开的粒子电路。

公开(公告)号：US07595964B2

公开(公告)日：2009-09-29

申请号：US11599801

申请日：2006-11-14

申请人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

发明人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

IPC分类号： G11B5/60

CPC分类号： G11B5/5552 ,  G11B5/4873 ,  G11B5/6011

摘要： Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms for moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention.

摘要翻译： 提供了改进的头万向节组件，减少了硬盘驱动器中的TMR（跟踪错位）。 这些头万向架组件与当代头万向架组件一样机械简单，在平盘表面上支撑平行的飞行滑块，并减少由磁盘振动引起的TMR。 与其他已知方法相比，其轨迹密度和转速可比较容易构建，更可靠，成本更低。 改进的头万向节组件包括三组机构，用于当盘表面平坦时平行于盘表面移动滑块，并且当盘表面弯曲时使滑块朝向轨道径向移动。 第一和第三机构以及第二和第三机构可以一起用在头部万向架组件中。 改进和独特的伺服控制器方案导致PES性能的总体改进，特别是当应用于采用本发明的TMR减小机构的硬盘驱动器时。 伺服控制器在磁盘振动频率范围内取消增益，有利于提高低频干扰的抑制。 当应用于具有本发明的TMR减少机制的硬盘驱动器时，这导致最低的PES统计。

公开(公告)号：US07420764B2

公开(公告)日：2008-09-02

申请号：US11397254

申请日：2006-04-03

申请人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

发明人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/596

摘要： The invention applies to servo controllers for at least the voice coil motor of a hard disk drive. Today, many control algorithms require 80 to 90 percent of the sampling period to complete their calculation of the next control, making computation time delay no longer negligible. The invention accommodates the transport delay, such as computation time delay, into the state estimator and into the whole control system. Experimental results using a commercial hard drive, as well as simulation results, show that the invention's method effectively improves the hard disk drive control system stability by increasing the phase margin and gain margin. The invention includes the method of operating the servo-controller, as well as the apparatus implementing that method. The invention also includes hard disk drives containing servo-controllers implementing the method, and program systems residing in accessibly coupled memory to a computer within the servo controller implementing the method.

摘要翻译： 本发明适用于至少用于硬盘驱动器的音圈电机的伺服控制器。 今天，许多控制算法需要80％到90％的采样周期来完成下一个控制的计算，使计算时间延迟不再可忽略。 本发明将诸如计算时间延迟的传输延迟适应到状态估计器中并进入整个控制系统。 使用商业硬盘驱动器的实验结果以及仿真结果表明，本发明的方法通过增加相位裕度和增益裕度来有效提高硬盘驱动器控制系统的稳定性。 本发明包括操作伺服控制器的方法以及实现该方法的装置。 本发明还包括实现该方法的包含伺服控制器的硬盘驱动器，以及驻留在可访问耦合存储器中的程序系统，其中所述计算机实现该方法的伺服控制器内的计算机。

公开(公告)号：US07002773B2

公开(公告)日：2006-02-21

申请号：US10226874

申请日：2002-08-22

申请人： Seong Woo Kang ,  Seong Hoon Kim ,  Gregory Tran ,  Vincent Nguyen ,  Scott Tran ,  Nikollay Ivanov ,  Joe Bragg

发明人： Seong Woo Kang ,  Seong Hoon Kim ,  Gregory Tran ,  Vincent Nguyen ,  Scott Tran ,  Nikollay Ivanov ,  Joe Bragg

IPC分类号： G11B33/14

CPC分类号： G11B33/08

摘要： Aerodynamic forces contribute to disk and actuator vibration leading to track positioning errors in storage devices such as hard disk drives. The invention provides a variety of dampening mechanisms and a method of dampening to alleviate these problems in single disk storage devices. This includes disk drives of at most 13 millimeters in height.