公开(公告)号：US6064540A

公开(公告)日：2000-05-16

申请号：US50858

申请日：1998-03-30

申请人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Francis C. Lee

发明人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Francis C. Lee

IPC分类号： G05D3/12 ,  G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G11B21/10 ,  G11B33/08

CPC分类号： G11B21/081 ,  G11B21/10 ,  G11B33/08 ,  G11B5/5582 ,  G11B5/59605

摘要： An active control mechanism and method for stabilizing a servo-controlled actuator system such as an actuator system in a data recording disk drive by compensating the vibrational modes of the actuator's arm assembly. The control mechanism has a sensing arrangement which can include one or more individual sensors attached to the actuator at locations where they generate signals in phase with the vibrational modes, and especially with all the major vibrational modes, of the arm assembly. A control mechanism derives from the signals an adjustment signal consisting of three corrective terms--a stiffening correction, an active damping correction and an inertia reduction correction--and the adjustment signal is used in the feedback control loop to stabilize the actuator system.

摘要翻译： 一种主动控制机构和方法，用于通过补偿致动器臂组件的振动模式来稳定伺服控制致动器系统，例如数据记录盘驱动器中的致动器系统。 控制机构具有感测装置，其可以包括一个或多个单独的传感器，其在它们与臂组件的振动模式，特别是与所有主要振动模式相同地产生信号的位置处附接到致动器。 控制机构根据信号得出由三个校正项组成的调节信号 - 加强校正，主动阻尼校正和惯性减小校正 - 并且在反馈控制回路中使用调节信号来稳定致动器系统。

公开(公告)号：US06583964B1

公开(公告)日：2003-06-24

申请号：US09272941

申请日：1999-03-18

申请人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Jiann-Chang Lo ,  Matthew T. White

发明人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Jiann-Chang Lo ,  Matthew T. White

IPC分类号： G11B2110

CPC分类号： G11B5/4833 ,  G11B5/4813 ,  G11B33/08

摘要： A disk drive having an arm assembly equipped with a primary actuator such as a VCM and a mode-canceling actuator such as a PZT mounted at a location selected in such a way that the strain in the mode-canceling actuator is in phase with sway deformations of the primary actuator produced by the vibrational modes of the arm assembly. The primary actuator is driven to exert a primary force, f ⋁ pm , on the arm assembly while the secondary driver ensures that the mode-canceling actuator applies a mode-canceling force, f ⋁ m ⁢   ⁢ c , on arm assembly such that the gain and phase of one or more vibrational modes are canceled.

摘要翻译： 具有臂组件的盘驱动器，其具有诸如VCM的主要致动器和诸如PZT的模式消除致动器，其安装在以使得模式消除致动器中的应变与摇摆变形相同的位置 通过臂组件的振动模式产生的主致动器。 主辅助致动器被驱动以在臂组件上施加一次力，而次级驾驶员确保模式消除致动器在臂组件上施加减震力，使得一个或多个振动模式的增益和相位被取消 。

公开(公告)号：US6104581A

公开(公告)日：2000-08-15

申请号：US167127

申请日：1998-10-05

申请人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Jiann-Chang Lo ,  Roger William Wood

发明人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Jiann-Chang Lo ,  Roger William Wood

IPC分类号： G11B21/02 ,  G11B5/48 ,  G11B5/55 ,  G11B21/08

CPC分类号： G11B5/5521 ,  G11B5/4806

摘要： An actuator assembly having two coils disposed between the poles of a voice coil motor (VCM) magnet for improved dynamic performance during settling and tracking operations in a disk drive. The two coils in the VCM are connected to separate current sources to allow the current flow in the two coils to have the same sense (clockwise or counterclockwise) or the opposite sense with respect to each other. When the current flows in the two coils have the opposite sense, excitation of the principal in-plane bending mode resonance of the actuator assembly is suppressed allowing the use of an increased servo bandwidth for settling and tracking operations of the disk drive. During seek operations of the disk drive, where maximum torque on the actuator is desirable, the coil currents in the two coils are chosen to have the same sense so that the forces on the actuator from the two coils are additive.

摘要翻译： 具有设置在音圈电机（VCM）磁体的极之间的两个线圈的致动器组件，用于在磁盘驱动器中的稳定和跟踪操作期间改善动态性能。 VCM中的两个线圈连接到单独的电流源，以允许两个线圈中的电流具有相同的感测（顺时针或逆时针）或相对于彼此的相反感。 当两个线圈中的电流流动具有相反的感觉时，致动器组件的主要的平面内弯曲模式谐振的激励被抑制，从而可以使用增加的伺服带宽来进行磁盘驱动器的稳定和跟踪操作。 在磁盘驱动器的寻道操作期间，在执行器上的最大扭矩是期望的，两个线圈中的线圈电流被选择为具有相同的感测，使得来自两个线圈的致动器上的力是相加的。

公开(公告)号：US6100623A

公开(公告)日：2000-08-08

申请号：US139541

申请日：1998-08-25

申请人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Jiann-Chang Lo

发明人： Fu-Ying Huang ,  Wayne Isami Imaino ,  Jiann-Chang Lo

IPC分类号： G11B5/55 ,  H01L41/04 ,  H02N2/06 ,  H01L41/08

CPC分类号： G11B5/4873 ,  H02N2/062 ,  G11B5/5552

摘要： A system and method for using a piezoelectric (PZT) element to simultaneously actuate and sense a displacement of an arm assembly; e.g., an assembly for reading and writing data in a storage medium. The simultaneous actuating and sensing function of the PZT is achieved by adding a high-frequency excitation to a control signal which actuates the PZT. The control signal and the high-frequency excitation cause deformation of the PZT translating into arm displacement and cause the generation of an electrical response signal by the PZT. A bridge which simulates the reactance/resistance of the PZT receives the response signal and derives from it the displacement of the arm assembly. Suitable compensation techniques for active control of the PZT and for mitigation of mechanical vibrations and other disturbances experienced by the arm assembly may then be implemented based on the displacement.

摘要翻译： 一种用于使用压电（PZT）元件来同时致动并感测臂组件的位移的系统和方法; 例如用于在存储介质中读取和写入数据的组件。 通过向驱动PZT的控制信号增加高频激励来实现PZT的同时启动和检测功能。 控制信号和高频激励导致PZT转变为臂位移的变形，并引起PZT产生电响应信号。 模拟PZT的电抗/电阻的桥梁接收响应信号，并从其中得出臂组件的位移。 然后可以基于位移来实现用于PZT的主动控制和用于减轻臂组件经历的机械振动和其他干扰的合适的补偿技术。

公开(公告)号：US08842383B1

公开(公告)日：2014-09-23

申请号：US13907157

申请日：2013-05-31

申请人： Hamid Balamane ,  John T. Contreras ,  Samir Garzon ,  Fu-Ying Huang ,  Lidu Huang ,  Barry C. Stipe

发明人： Hamid Balamane ,  John T. Contreras ,  Samir Garzon ,  Fu-Ying Huang ,  Lidu Huang ,  Barry C. Stipe

IPC分类号： G11B27/36

CPC分类号： G11B5/40 ,  G11B5/3106 ,  G11B5/3136 ,  G11B5/314 ,  G11B2005/0021

摘要： Embodiments of the present invention generally relate to a HAMR device having two temperature sensors disposed between a near field transducer (NFT) and a return pole. The two temperature sensors are aligned in a cross-track direction.

摘要翻译： 本发明的实施例一般涉及具有设置在近场换能器（NFT）和返回极之间的两个温度传感器的HAMR装置。 两个温度传感器在交叉轨道方向上对齐。

公开(公告)号：US08634159B2

公开(公告)日：2014-01-21

申请号：US13427762

申请日：2012-03-22

申请人： Fu-Ying Huang ,  Xiaotian Sun

发明人： Fu-Ying Huang ,  Xiaotian Sun

IPC分类号： G11B5/596

CPC分类号： G11B19/042 ,  G11B5/5582 ,  G11B5/59694

摘要： A magnetic recording disk drive has three vibration sensors mounted to the disk drive base to provide feedforward vibration compensation signals. First and second spaced-apart sensors are aligned generally parallel to a radius from the disk rotational axis to a head position on the disk between the inside diameter position (hID) and outside diameter position (hOD) for detecting rotational vibration about the disk rotational axis and linear vibration in the cross-track direction. A third vibration sensor is aligned generally orthogonal to the primary axes of the first and second vibration sensors for detecting primarily linear vibrations in the along-the-track or track circumferential direction. The disk drive servo control processor calculates, from the signals from the three sensors, a rotational vibration feedforward signal, a radial linear vibration feedforward signal, and a circumferential linear vibration feedforward signal which are summed with the actuator control signal to compensate for the vibrations.

摘要翻译： 磁记录盘驱动器具有安装在磁盘驱动器底座上的三个振动传感器，以提供前馈振动补偿信号。 第一和第二间隔开的传感器大致平行于从盘旋转轴线到圆盘上的头部位置的半径，内径位置（hID）和外径位置（hOD）之间用于检测围绕盘旋转轴线的旋转振动 和横向方向的线性振动。 第三振动传感器大致正交于第一和第二振动传感器的主轴线，用于主要沿着轨道或轨道圆周方向检测线性振动。 磁盘驱动器伺服控制处理器根据来自三个传感器的信号，计算与致动器控制信号相加以补偿振动的旋转振动前馈信号，径向线性振动前馈信号和圆周线性振动前馈信号。

公开(公告)号：US08416646B2

公开(公告)日：2013-04-09

申请号：US13190410

申请日：2011-07-25

申请人： Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry Cushing Stipe ,  Timothy Carl Strand ,  Petrus Antonius VanDerHeijden

发明人： Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry Cushing Stipe ,  Timothy Carl Strand ,  Petrus Antonius VanDerHeijden

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A thermally-assisted recording (TAR) disk drive uses “shingled” recording and a rectangular waveguide as a “wide-area” heat source. The waveguide generates a generally elliptically-shaped optical spot that heats an area of the recording layer extending across multiple data tracks. The waveguide core has an aspect ratio (cross-track width to along-the track thickness) that achieves the desired size of the heated area while locating the peak optical intensity close to the trailing edge of the write pole tip where writing occurs. The large cross-track width of the waveguide core increases the volume of recording layer heated by the optical spot, which reduces the rate of cooling. This moves the peak temperature point of the heated area closer to the write pole tip and reduces the temperature drop between the peak temperature and the temperature at the trailing edge of the write pole tip where writing occurs.

摘要翻译： 热辅助记录（TAR）磁盘驱动器使用带状闪烁的记录和矩形波导作为广域热源。 波导产生大致椭圆形的光点，其加热跨越多个数据轨道的记录层的区域。 波导芯具有实现加热区域的期望尺寸的纵横比（沿轨道厚度的横越轨道宽度），同时将峰值光强度定位在写入发生时写入磁极尖端的后缘附近。 波导芯的大的横向轨道宽度增加了由光点加热的记录层的体积，这降低了冷却速度。 这使得加热区域的峰值温度点更接近写极端，并且降低峰值温度与写入磁极尖端的后缘处的温度之间的温度下降。

公开(公告)号：US08339732B2

公开(公告)日：2012-12-25

申请号：US12881017

申请日：2010-09-13

申请人： Jia-Yang Juang ,  Fu-Ying Huang ,  Takashi Tomita

发明人： Jia-Yang Juang ,  Fu-Ying Huang ,  Takashi Tomita

IPC分类号： G11B33/14

CPC分类号： G11B25/043 ,  G11B33/025

摘要： Approaches for a hard-disk drive (HDD) baseplate comprising a recessed region that provides additional clearance for a disk. The protective enclosure of the HDD comprises a baseplate. The surface of the baseplate, which opposes a magnetic-recording disk, comprises a recessed region near the outer diameter (OD) of the magnetic-recording disk. The recessed region prevents the disk from being damaged through inadvertent physical contact with the baseplate, which may arise when the HDD receives a mechanical shock. The recessed region may be designed to minimize the damage to the disk if physical contact between the disk and the baseplate does occur. The recessed region may have a variety of shapes, such as a circular indentation or one or more non-contiguous regions in the baseplate where physical contact between the disk and the baseplate is deemed likely to occur.

摘要翻译： 硬盘驱动器（HDD）基板的方法包括为磁盘提供额外间隙的凹陷区域。 HDD的保护外壳包括底板。 基板的与磁记录盘相对的表面包括靠近磁记录盘的外径（OD）的凹陷区域。 凹陷区域通过与基板的无意物理接触来防止盘损坏，这在HDD接收到机械冲击时可能发生。 凹陷区域可以被设计成使得当盘和基板之间的物理接触确实发生时对盘的损坏最小化。 凹陷区域可以具有各种形状，例如基底板中的圆形凹陷或一个或多个非连续区域，其中认为盘和基板之间的物理接触可能发生。

公开(公告)号：US08223461B2

公开(公告)日：2012-07-17

申请号：US11904928

申请日：2007-09-28

申请人： Fu-Ying Huang ,  Jifang Tian

发明人： Fu-Ying Huang ,  Jifang Tian

IPC分类号： G11B5/56

CPC分类号： G11B5/4826 ,  G11B5/483 ,  G11B5/4873

摘要： A pure rotary microactuator comprising a spring assembly etched within a silicon substrate is disclosed. A first piezoelectric device is coupled with a first portion of the spring assembly and a second piezoelectric device coupled with a second portion of the spring assembly. The first piezoelectric device changes shape in response to an electrical input signal, and this change in shape provides a first push force to the first portion of the spring assembly in a first direction. The second piezoelectric device also changes shape in response to the electrical input signal, and this change in shape provides a second push force to the second portion in a second direction, which is different from the first direction. The combination of the first and the second push forces rotates the spring assembly with respect to the silicon substrate.

摘要翻译： 公开了一种包括蚀刻在硅衬底内的弹簧组件的纯旋转微致动器。 第一压电装置与弹簧组件的第一部分耦合，以及与弹簧组件的第二部分联接的第二压电装置。 第一压电装置响应于电输入信号改变形状，并且这种形状变化在第一方向上向弹簧组件的第一部分提供第一推力。 第二压电装置还响应于电输入信号而改变形状，并且这种形状变化在与第一方向不同的第二方向上向第二部分提供第二推力。 第一和第二推力的组合使弹簧组件相对于硅衬底转动。

公开(公告)号：US07976221B2

公开(公告)日：2011-07-12

申请号：US11787904

申请日：2007-04-17

申请人： Fu-Ying Huang ,  Jifang Tian

发明人： Fu-Ying Huang ,  Jifang Tian

IPC分类号： F16C32/06

CPC分类号： F16C17/107 ,  F16C33/107 ,  F16C2370/12

摘要： A system and method for improving lubrication in a fluid dynamic bearing are disclosed. A fluid dynamic bearing is formed. The fluid dynamic bearing comprises a shaft having an axis of rotation and a surface comprising a first groove at a first depth and a second groove at a second depth, wherein the first and second grooves are for supporting a film of lubricating fluid. The fluid dynamic bearing further includes a hub having an axis coincident to the axis of rotation and a complimentary surface juxtaposed to the shaft which is conducive to supporting the lubricating fluid such that the shaft is rotatably retained.

摘要翻译： 公开了一种用于改善流体动力轴承中的润滑的系统和方法。 形成流体动力轴承。 流体动力轴承包括具有旋转轴线的轴和包括在第一深度处的第一凹槽和在第二深度处的第二凹槽的表面，其中第一和第二凹槽用于支撑润滑流体膜。 流体动力轴承还包括具有与旋转轴线重合的轴线的毂和与轴并置的互补表面，其有利于支撑润滑流体，使得轴可旋转地保持。