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1. 发明授权

US06747843B2 Ramp design for reducing read-write head track positioning errors 失效
标题翻译：斜坡设计可减少读写头轨迹定位误差
公开(公告)号：US06747843B2
公开(公告)日：2004-06-08
申请号：US10107387
申请日：2002-03-26
申请人： Vinod Sharma , Joseph Chang , Hyung Jai Lee
发明人： Vinod Sharma , Joseph Chang , Hyung Jai Lee
IPC分类号： G11B554
CPC分类号： G11B21/22 , G11B5/54
摘要： The invention includes a method of A wipping part of the load ramp is a convex finger crossing the read-write head path of motion with respect to a lifting tab engagably moving across the loading ramp.
摘要翻译：本发明包括一种方法，其中一部分负载斜坡是一凸凸指，该凸指相对于一可提升平板移动穿过该加载斜坡的一提升片而与该移动读写头相交。

2. 发明申请

US20090034128A1 Method and apparatus for independent piezoelectric excitation in the micro-actuator assemblies of a hard disk drive for improved drive reliability 审中-公开
标题翻译：用于硬盘驱动器的微致动器组件中的独立压电激励的方法和装置，用于提高驱动可靠性
公开(公告)号：US20090034128A1
公开(公告)日：2009-02-05
申请号：US11897936
申请日：2007-08-31
申请人： Vinod Sharma , Hyung Jai Lee
发明人： Vinod Sharma , Hyung Jai Lee
IPC分类号： G11B21/24
CPC分类号： G11B5/4826 , G11B5/4873 , G11B5/5552
摘要： A hard disk drive using a micro-actuator assembly to position a slider over a track on a rotating disk surface. The micro-actuator assembly includes a first piezoelectric device and a second piezoelectric device, both mechanically coupled to the slider. The first piezoelectric device includes a first terminal electrically coupled to a first voltage line and a second terminal electrically coupled to a ground line. The second piezoelectric device includes a third terminal electrically coupled to a ground line and a fourth terminal electrically coupled to a voltage line. A voltage applied to the first voltage line stimulates only the first piezoelectric device to alter a lateral position of the slider over the rotating disk surface, and a second voltage applied to the second voltage line stimulates only the second piezoelectric device to alter the lateral position of the slider over the rotating disk surface.
摘要翻译：使用微型致动器组件的硬盘驱动器将滑块定位在旋转盘表面上的轨道上。微致动器组件包括机械地联接到滑块的第一压电装置和第二压电装置。第一压电器件包括电耦合到第一电压线的第一端子和电耦合到接地线的第二端子。第二压电器件包括电耦合到接地线的第三端子和电耦合到电压线的第四端子。施加到第一电压线的电压仅刺激第一压电装置来改变滑块在旋转盘表面上的横向位置，并且施加到第二电压线的第二电压仅刺激第二压电装置改变第二压电装置的横向位置滑块越过旋转盘表面。

3. 发明授权

US08199438B2 In-situ dynamic pitch and roll adjustment in hard disk drives 有权
标题翻译：硬盘驱动器中的原位动态俯仰和滚动调整
公开(公告)号：US08199438B2
公开(公告)日：2012-06-12
申请号：US12354601
申请日：2009-01-15
申请人： Vinod Sharma , Hyung Jai Lee
发明人： Vinod Sharma , Hyung Jai Lee
IPC分类号： G11B21/16
CPC分类号： G11B5/4826 , G11B5/4833 , G11B5/4873
摘要： Disclosed is a head gimbal assembly for a hard disk drive that includes a head pivotally connected to a flexure. The flexure has a longitudinal axis. The assembly includes first and second micro-actuators that are located between the flexure and the head and spaced from the longitudinal axis. By way of example, the first and second micro-actuators may be thin piezo-electric transducers. Control signals can be provided to the micro-actuators to vary the pitch and/or roll of the head.
摘要翻译：公开了一种用于硬盘驱动器的头部万向架组件，其包括枢转地连接到挠曲件的头部。挠曲具有纵向轴线。组件包括第一和第二微致动器，其位于弯曲部和头部之间并且与纵向轴线间隔开。作为示例，第一和第二微致动器可以是薄压电换能器。可以向微致动器提供控制信号以改变头部的俯仰和/或滚动。

4. 发明授权

US07573668B2 Method and apparatus for sensing leakage current to estimate and possibly adjust flying height of a read-write head in a hard disk drive 失效
标题翻译：用于检测泄漏电流的方法和装置，以估计和可能地调整硬盘驱动器中的读写头的飞行高度
公开(公告)号：US07573668B2
公开(公告)日：2009-08-11
申请号：US11333679
申请日：2006-01-16
申请人： Haesung Kwon , Vinod Sharma , Hyung Jai Lee
发明人： Haesung Kwon , Vinod Sharma , Hyung Jai 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。

5. 发明授权

US07583468B2 Method and apparatus of dual stage servo control with dual control paths and decoupling feedback for track following in a hard disk drive 失效
标题翻译：具有双重控制路径的双级伺服控制方法和装置，以及硬盘驱动器中跟踪跟踪的去耦反馈
公开(公告)号：US07583468B2
公开(公告)日：2009-09-01
申请号：US11270940
申请日：2005-11-10
申请人： Vinod Sharma , Hyung Jai Lee , Dong Jun Lee
发明人： Vinod Sharma , Hyung Jai Lee , Dong Jun 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。

6. 发明授权

US07336436B2 Head gimbal assemblies for very low flying height heads with optional micro-actuators in a hard disk drive 失效
标题翻译：用于非常低飞行高度头的头万向节组件，在硬盘驱动器中具有可选的微执行器
公开(公告)号：US07336436B2
公开(公告)日：2008-02-26
申请号：US10903730
申请日：2004-07-29
申请人： Vinod Sharma , Haesung Kwon , Hyung Jai Lee
发明人： Vinod Sharma , Haesung Kwon , Hyung Jai Lee
IPC分类号： G11B5/60 , G11B21/21
CPC分类号： G11B5/4826 , G11B5/4853 , G11B5/486 , G11B5/5552 , G11B5/58 , Y10T29/49025
摘要： Head gimbal assembly (HGA) may include a piezo layer mechanically coupled with the slider or include a piezo element mechanically coupled by the flexure to the slider top near the read-write head. A bridge flex circuit is included, providing a piezo-control bundle to at least one piezo layer lead. A flex circuit assembly may further provide a piezo control bundle, shared with piezo control bundles for multiple read-write heads. HGA may include a micro-actuator to position read-write head near track on accessed, rotating disk surface. Flex circuit assembly may provide a source control bundle, shared with the micro-actuator control bundles for multiple read-write heads. When accessing, all micro-actuators perform same positioning action, insuring proper positioning of read-write head. This applies to both co-located and non co-located micro-actuators. Wire bundles may include one or two active signal wires. Voice coil actuators and hard disk drives, and their manufacture, are included.
摘要翻译：头部万向节组件（HGA）可以包括与滑块机械耦合的压电层，或者包括通过挠性机构耦合到读写头附近的滑块顶部的压电元件。包括桥梁柔性电路，为至少一个压电层引线提供压电控制束。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。 HGA可以包括微致动器以将读写头靠近所访问的旋转盘表面上的轨迹。 Flex电路组件可以提供与多个读写头的微执行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定位微致动器。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及其制造。

7. 发明授权

US07009803B2 Method and apparatus of dual stage servo control for track following in a hard disk drive 失效
标题翻译：用于在硬盘驱动器中跟踪的双级伺服控制的方法和装置
公开(公告)号：US07009803B2
公开(公告)日：2006-03-07
申请号：US10886171
申请日：2004-07-06
申请人： Vinod Sharma , Hyung Jai Lee , Dong Jun Lee
发明人： Vinod Sharma , Hyung Jai Lee , Dong Jun 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。

8. 发明申请

US20100177443A1 IN-SITU DYNAMIC PITCH AND ROLL ADJUSTMENT IN HARD DISK DRIVES 有权
标题翻译：硬盘驱动器中的现场动态倾斜和滚动调整
公开(公告)号：US20100177443A1
公开(公告)日：2010-07-15
申请号：US12354601
申请日：2009-01-15
申请人： Vinod Sharma , Hyung Jai Lee
发明人： Vinod Sharma , Hyung Jai Lee
IPC分类号： G11B21/16
CPC分类号： G11B5/4826 , G11B5/4833 , G11B5/4873
摘要： Disclosed is a head gimbal assembly for a hard disk drive that includes a head pivotally connected to a flexure. The flexure has a longitudinal axis. The assembly includes first and second micro-actuators that are located between the flexure and the head and spaced from the longitudinal axis. By way of example, the first and second micro-actuators may be thin piezo-electric transducers. Control signals can be provided to the micro-actuators to vary the pitch and/or roll of the head.
摘要翻译：公开了一种用于硬盘驱动器的头部万向架组件，其包括枢转地连接到挠曲件的头部。挠曲具有纵向轴线。组件包括第一和第二微致动器，其位于弯曲部和头部之间并且与纵向轴线间隔开。作为示例，第一和第二微致动器可以是薄压电换能器。可以向微致动器提供控制信号以改变头部的俯仰和/或滚动。

9. 发明授权

US07576940B2 Method and apparatus for estimating micro-actuator stroke sensitivity in a hard disk drive 失效
标题翻译：用于估计硬盘驱动器中的微执行器行程灵敏度的方法和装置
公开(公告)号：US07576940B2
公开(公告)日：2009-08-18
申请号：US11329724
申请日：2006-01-10
申请人： Dong Jun Lee , Young-Hoon Kim , Vinod Sharma , Hyung Jai Lee
发明人： Dong Jun Lee , Young-Hoon Kim , Vinod Sharma , Hyung Jai 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.
摘要翻译：估计微型执行器与滑块及其读写头耦合的行程灵敏度的方法。微执行器激励信号用于驱动微执行器，引起噪声进入侧面定位的读写头靠近轨道的音圈电机产生PES。从位置误差信号导出的侧向位置噪声。从横向位置噪声和微致动器刺激信号估计行程灵敏度。伺服控制器，包括伺服控制器和硬盘驱动器在内的嵌入式电路的装置支持方法可以包括伺服控制器和/或嵌入式电路。制作伺服控制器，嵌入式电路和/或硬盘驱动器的方法。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。

10. 发明授权

US07009804B2 Method and apparatus for micro-actuator stroke sensitivity calibration in a hard disk drive 失效
标题翻译：在硬盘驱动器中用于微执行器行程灵敏度校准的方法和装置
公开(公告)号：US07009804B2
公开(公告)日：2006-03-07
申请号：US10903731
申请日：2004-07-29
申请人： Vinod Sharma , Hyung Jai Lee
发明人： Vinod Sharma , Hyung Jai Lee
IPC分类号： G11B5/596
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。

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