公开(公告)号：US20080002302A1

公开(公告)日：2008-01-03

申请号：US11435271

申请日：2006-05-15

申请人： Hae-sung Kwon ,  Eo-Jin Hong ,  Yun-Sik Han ,  Vinod Sharma ,  Hyung Lee

发明人： Hae-sung Kwon ,  Eo-Jin Hong ,  Yun-Sik Han ,  Vinod Sharma ,  Hyung Lee

IPC分类号： G11B5/48

CPC分类号： G11B5/4826 ,  G11B5/40 ,  G11B5/5582

摘要： This invention stems from knowing that a head gimbal assembly has twice as much of its mass centered on its base plate as it has on its slider performs better in terms of resilience to mechanical shock than one with twice as much mass on the slider as on its base plate. The inventors realized that while these two configurations in normal operation are almost identical, during the impulse and after shocks, the slider with the smaller ratio of mass to the base plate performs better. The invention includes manufacturing methods for the head gimbal assembly, the head stack assembly, and the hard disk drive, as well as these items as products of their respective manufacturing processes.

摘要翻译： 本发明源于知道头部万向节组件的质量是其基板的两倍，因为它的滑块在弹性回弹性方面比在滑块上具有两倍质量的弹性更好。 底盘。 发明人意识到，虽然这两种正常操作中的这两种配置几乎相同，但是在冲击和冲击之后，质量与基板之间的比例较小的滑块性能更好。 本发明包括头部万向节组件，磁头组合组件和硬盘驱动器的制造方法，以及作为其各自制造工艺的产品的这些项目。

公开(公告)号：US20070165323A1

公开(公告)日：2007-07-19

申请号：US11331487

申请日：2006-01-13

申请人： Haesung Kwon ,  Vinod Sharma ,  Hyung Lee

发明人： Haesung Kwon ,  Vinod Sharma ,  Hyung Lee

IPC分类号： G11B21/02 ,  G11B27/36

CPC分类号： G11B5/6005 ,  G11B5/40

摘要： Method estimating flying height of read-write head in slider near rotating disk surface. Sensing leakage current between slider and spindle motor to create potential difference measurement. Converting potential difference measurement to create estimate of flying height. Method controlling flying height using method for estimating by adjusting vertical actuation signal to micro-actuator assembly. Embodiments implement these methods. Embedded circuit and hard disk drive, each including the apparatus. The invention includes methods of manufacturing and their products.

公开(公告)号：US20060114598A1

公开(公告)日：2006-06-01

申请号：US11329724

申请日：2006-01-10

申请人： Dong Lee ,  Young-Hoon Kim ,  Vinod Sharma ,  Hyung Lee

发明人： Dong Lee ,  Young-Hoon Kim ,  Vinod Sharma ,  Hyung Lee

IPC分类号： G11B5/596

CPC分类号： G11B5/5552 ,  G11B5/596

摘要： Method of estimating the stroke sensitivity of micro-actuator coupled with slider and its read-write head. Micro-actuator stimulus signal used to drive micro-actuator, inducing noise into lateral positioning of read-write head near track by voice coil motor to create PES. Lateral position noise derived from Position Error Signal. Stroke sensitivity estimated from lateral position noise and micro-actuator stimulus signal. Apparatus supporting method estimating stroke sensitivity: servo controller, embedded circuit including servo-controller, and hard disk drive may include servo-controller and/or embedded circuit. Method making servo-controller, embedded circuit, and/or hard disk drive. Servo-controller, embedded circuit, and hard disk drive are products of these processes.

公开(公告)号：US20070165324A1

公开(公告)日：2007-07-19

申请号：US11333679

申请日：2006-01-16

申请人： Haesung Kwon ,  Vinod Sharma ,  Hyung Lee

发明人： Haesung Kwon ,  Vinod Sharma ,  Hyung Lee

IPC分类号： G11B21/02

CPC分类号： G11B5/4873 ,  G11B5/4826 ,  G11B5/4833 ,  G11B5/4853 ,  G11B5/486 ,  G11B5/6058

摘要： A slider, flexure finger, head suspension assembly, head gimbal assembly, main flex circuit, actuator assembly, spindle motor, embedded circuit, and hard disk drive using and/or supporting method of estimating flying height of read-write head near rotating disk surface. Method senses leakage current between slider and spindle motor to create potential difference measurement, and converts potential difference measurement to create estimate of flying height. Method controlling flying height using method for estimating by adjusting vertical actuation signal to micro-actuator assembly. The invention includes methods of manufacturing and their products.

摘要翻译： 使用和/或支持在旋转盘表面附近估计读写头的飞行高度的滑块，挠曲指，头悬挂组件，头万向架组件，主柔性电路，致动器组件，主轴电机，嵌入式电路和硬盘驱动器 。 方法检测滑块和主轴电机之间的泄漏电流，以产生电位差测量，并转换电位差测量值，以产生飞行高度的估计值。 使用用于通过调节垂直致动信号到微致动器组件进行估计的方法来控制飞行高度。 本发明包括制造方法及其产品。

公开(公告)号：US20060109585A1

公开(公告)日：2006-05-25

申请号：US11329851

申请日：2006-01-10

申请人： Dong Lee ,  Young-Hoon Kim ,  Vinod Sharma ,  Hyung Lee

发明人： Dong Lee ,  Young-Hoon Kim ,  Vinod Sharma ,  Hyung Lee

IPC分类号： G11B5/596

CPC分类号： G11B5/5552 ,  G11B5/596

摘要： Operating micro-actuator using stroke sensitivity estimate including controlling micro-actuator directing read-write head toward track using stroke sensitivity to create micro-actuator stimulus signal. Servo controller may support operating micro-actuator. Method of estimating may be used to create stroke sensitivity during at least initialization/calibration of manufacturing hard disk drive. Embedded circuit may include servo controller. Hard disk drive may include servo controller, possibly embedded circuit, coupled to voice coil motor, to provide micro-actuator stimulus signal driving micro-actuator. Invention includes making servo controller, possibly embedded circuit, and/or hard disk drive. Servo controller, embedded circuit, and hard disk drive are products of these processes.

摘要翻译： 使用行程灵敏度估计的操作微执行器，包括使用行程灵敏度控制微执行器将读写头引导到轨迹，以产生微致动器刺激信号。 伺服控制器可以支持操作微执行器。 在制造硬盘驱动器的至少初始化/校准期间，可以使用估计方法来创建行程灵敏度。 嵌入式电路可能包括伺服控制器。 硬盘驱动器可能包括伺服控制器，可能的嵌入式电路，耦合到音圈电机，以提供微执行器激励信号驱动微执行器。 本发明包括制造伺服控制器，可能的嵌入式电路和/或硬盘驱动器。 伺服控制器，嵌入式电路和硬盘驱动器都是这些过程的产物。

公开(公告)号：US20060061902A1

公开(公告)日：2006-03-23

申请号：US11270940

申请日：2005-11-10

申请人： Vinod Sharma ,  Hyung Lee ,  Dong Lee

发明人： Vinod Sharma ,  Hyung Lee ,  Dong Lee

IPC分类号： G11B5/596

CPC分类号： G11B5/5552 ,  G11B5/596

摘要： A magnetic head follows a track in a hard disk drive as positioned by micro-actuator and voice coil motor. Embodiments operate two control paths. The micro-actuator control path generates a version of micro-actuator control signal stimulating the micro-actuator. The voice coil motor control path generates a version of voice coil control signal, amplified based upon tuning gain to stimulate voice coil motor. A decoupling feedback filter decouples these control paths, using the micro-actuator control signal version. Either control path may include a notch filter. A track following command, with PES removed, directs the micro-actuator control. The servo-controller may digitally support the invention, which may include the servo-controller program system. An implementation may be optimized within a hard disk drive, possibly as part of the manufacturing process. The hard disk drive is a product of that process.

摘要翻译： 磁头跟随由微型致动器和音圈电机定位的硬盘驱动器中的轨道。 实施例操作两个控制路径。 微致动器控制路径产生刺激微致动器的微致动器控制信号的形式。 音圈电机控制路径产生一个版本的音圈控制信号，根据调谐增益放大，以刺激音圈电机。 去耦反馈滤波器使用微执行器控制信号版本解耦这些控制路径。 控制路径可以包括陷波滤波器。 一个跟踪命令，取消了PES，指示微执行器控制。 伺服控制器可以数字支持本发明，其可以包括伺服控制器程序系统。 可以在硬盘驱动器内优化实现，可能是制造过程的一部分。 硬盘驱动器是该进程的产物。

公开(公告)号：US20060023341A1

公开(公告)日：2006-02-02

申请号：US10903731

申请日：2004-07-29

申请人： Vinod Sharma ,  Hyung Lee

发明人： Vinod Sharma ,  Hyung Lee

IPC分类号： G11B5/596 ,  G01N19/00

CPC分类号： G11B5/596

摘要： A sinusoidal signal is added to the notch filtered micro-actuator control signal stimulating the micro-actuator. The voice coil control signal is notch filtered to remove the frequency component of the sinusoidal signal before it stimulates the voice coil motor. The micro-actuator control signal is notch filtered to remove the frequency component of the sinusoidal signal before it stimulates the micro-actuator. The response of the system is measured as the Position Error Signal (PES), for the magnetic head moved by the micro-actuator. The measured PES is then demodulated at the frequency of the sinusoidal signal to create a measured amplitude. The stroke sensitivity is then calculated from the measured amplitude and amplitude of the sinusoidal stimulus. The frequency of the sinusoidal signal and notch filters is essentially the same, chosen away from significant excitation frequencies and outside the bandwidth of the servo system. The invention includes using multiple frequencies, as well as various formulas for the stroke sensitivity. The invention may be applied to more than one micro-actuator within the hard disk drive to create a stroke sensitivity for each micro-actuator, a combination, or for all micro-actuators. The invention includes the method implemented using a servo-controller, as well as the program system for the servo-controller, at least partly implementing the method.

摘要翻译： 将正弦信号添加到刺激微致动器的陷波滤波微致动器控制信号。 音圈控制信号被陷波滤波，以消除正弦信号的频率分量，然后刺激音圈电机。 微致动器控制信号被陷波滤波，以消除正弦信号的频率分量，然后刺激微致动器。 对于由微执行器移动的磁头，系统的响应被测量为位置误差信号（PES）。 然后将所测量的PES以正弦信号的频率解调，以产生测量幅度。 然后根据测量的正弦刺激的振幅和振幅计算行程灵敏度。 正弦信号和陷波滤波器的频率基本相同，从显着的激励频率和伺服系统的带宽外部选择。 本发明包括使用多个频率以及用于行程灵敏度的各种公式。 本发明可以应用于硬盘驱动器内的多于一个微致动器，以为每个微致动器，组合或所有微致动器创建行程灵敏度。 本发明包括使用伺服控制器实现的方法以及伺服控制器的程序系统，至少部分实现该方法。

公开(公告)号：US20060023338A1

公开(公告)日：2006-02-02

申请号：US10903730

申请日：2004-07-29

申请人： Vinod Sharma ,  Haesung Kwon ,  Hyung Lee

发明人： Vinod Sharma ,  Haesung Kwon ,  Hyung Lee

IPC分类号： G11B21/02 ,  G11B5/54 ,  G11B5/127

CPC分类号： G11B5/4826 ,  G11B5/4853 ,  G11B5/486 ,  G11B5/5552 ,  G11B5/58 ,  Y10T29/49025

摘要： A head gimbal assembly may include a piezo layer mechanically coupled with the slider. Bending the piezo layer alters flying height. Alternatively, it may include a piezo element mechanically coupled by a flexure to the slider top near the read-write head, which when excited, bends the flexure to alter the flying height. A bridge flex circuit is included, providing a piezo-control bundle to at least one of the piezo layer leads. The flex circuit assembly may further provide a piezo control bundle, shared with the piezo control bundles for multiple read-write heads. The head gimbal assembly may include a micro-actuator to position the read-write head near a track on the accessed, rotating disk surface. The flex circuit assembly may provide a source control bundle, shared with micro-actuator control bundles for multiple read-write heads. When accessing, all micro-actuators perform the same positioning action, insuring proper positioning of the read-write head. This applies to co-located and non co-located micro-actuators. Wire bundles may include one or two active signal wires. Voice coil actuators and the hard disk drives, as well as making these, are included.

摘要翻译： 头部万向架组件可以包括与滑块机械联接的压电层。 弯曲压电层改变飞行高度。 或者，其可以包括通过弯曲机构耦合到读写头附近的滑块顶部的压电元件，当被激励时，其弯曲挠曲件以改变飞行高度。 包括桥式柔性电路，为至少一个压电层导线提供压电控制束。 柔性电路组件还可以提供与用于多个读写头的压电控制束共享的压电控制束。 磁头万向架组件可以包括微型致动器，以将读写磁头定位在所访问的旋转磁盘表面上的轨道附近。 柔性电路组件可以提供与多个读写头的微致动器控制束共享的源控制束。 当访问时，所有微执行器执行相同的定位动作，确保读写头的正确定位。 这适用于同位置和非共位微致动器。 电线束可以包括一个或两个有源信号线。 包括音圈执行器和硬盘驱动器，以及制作这些驱动器。

公开(公告)号：US20060007589A1

公开(公告)日：2006-01-12

申请号：US10886171

申请日：2004-07-06

申请人： Vinod Sharma ,  Hyung Lee ,  Dong Lee

发明人： Vinod Sharma ,  Hyung Lee ,  Dong Lee

IPC分类号： G11B5/596

CPC分类号： G11B5/5552 ,  G11B5/596

摘要： The invention operates two control paths. The micro-actuator control stimulates the micro-actuator. The voice coil motor control path includes the voice coil motor control generating a voice coil control signal, notch filtered to remove at least one significant excitation resonance for a notch filtered voice coil control signal. Amplifying the notch filtered voice coil control signal by a tuning gain stimulates the voice coil motor. A decoupling feedback filter uses the micro-actuator control signal to create a decoupling feedback signal used to decouple the two control paths. A track following command, with PES removed, directs the micro-actuator control. The voice coil motor control is directed by the track following command, with both PES and decoupling feedback signal removed. Preferably, the servo-controller digitally supports the elements of the invention. Implementing the method may preferably include the servo-controller program system residing in an accessibly coupled memory. The invention includes optimizing an implementation within the hard disk drive. The optimization may be part of the manufacturing process for the hard disk drive. The invention includes the hard disk drive as the product of that manufacturing process.

摘要翻译： 本发明操作两个控制路径。 微致动器控制激励微致动器。 音圈电机控制路径包括产生音圈控制信号的音圈电机控制信号，对陷波滤波音圈控制信号进行陷波滤波以去除至少一个重要的激励谐振。 通过调谐增益放大陷波滤波的音圈控制信号可以刺激音圈电机。 去耦反馈滤波器使用微致动器控制信号来产生用于去耦合两个控制路径的去耦反馈信号。 一个跟踪命令，取消了PES，指示微执行器控制。 音圈电机控制由跟踪跟踪命令指导，PES和去耦反馈信号都消除。 优选地，伺服控制器以数字方式支持本发明的元件。 实施该方法可以优选地包括驻留在可访问耦合的存储器中的伺服控制器程序系统。 本发明包括优化硬盘驱动器内的实现。 优化可能是硬盘驱动器的制造过程的一部分。 本发明包括硬盘驱动器作为该制造过程的产物。

公开(公告)号：US20050105218A1

公开(公告)日：2005-05-19

申请号：US10713616

申请日：2003-11-13

申请人： Vinod Sharma ,  Hyung Lee

发明人： Vinod Sharma ,  Hyung Lee

IPC分类号： G11B21/02 ,  G11B5/48 ,  G11B21/16 ,  H05K1/14 ,  H05K3/36

CPC分类号： G11B5/486 ,  H05K1/147 ,  H05K3/363

摘要： The present invention includes communication between a servo-controller and micro-actuators, which position multiple read-write heads, which occurs through sharing a bundle of wires with the micro-actuators. The invention is applicable to disk drives including both hard disk drives and optical disk drives. When accessing a disk surface, all micro-actuators perform the same positioning, insuring the proper positioning of the read-write head above the accessed disk surface. The invention applies to co-located and/or non co-located micro-actuators. The wire bundle may include one or two active signal wires. The invention includes a flex circuitry assembly implementing the communication, a voice coil actuator built with the flex circuitry, and a hard disk drive built with the voice coil actuator, as well as the methods of making these components.

摘要翻译： 本发明包括伺服控制器和微致动器之间的通信，微型致动器定位多个读写头，这通过与微致动器共享一束电线而发生。 本发明适用于包括硬盘驱动器和光盘驱动器的磁盘驱动器。 当访问磁盘表面时，所有微执行器执行相同的定位，确保读写头在访问的磁盘表面上的正确定位。 本发明适用于同位置和/或非共定位微致动器。 线束可以包括一个或两个有源信号线。 本发明包括实现通信的柔性电路组件，用柔性电路构建的音圈致动器以及用音圈致动器构建的硬盘驱动器，以及制造这些部件的方法。