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1. 发明授权

US07031095B2 Servo controller method and apparatus for high tracks per inch hard disk drives using a delay accomodating state estimator 失效
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.

2. 发明授权

US07420764B2 Servo controller method and apparatus for high tracks per inch hard disk drives using a delay accomodating state estimator 失效
标题翻译：使用延迟适应状态估计器的每英寸硬盘驱动器的高轨道伺服控制器方法和装置
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。

3. 发明授权

US07385780B2 Online identification of secondary actuator transfer function via system decoupling in multiple-stage actuator servo systems in disk drives 失效
标题翻译：通过磁盘驱动器中的多级执行器伺服系统中的系统去耦在线识别辅助执行器传递功能
公开(公告)号：US07385780B2
公开(公告)日：2008-06-10
申请号：US11580635
申请日：2006-10-12
申请人： Young Hoon Kim , Sang Hoon Chu , Dong-Jun Lee , Hyung Jai Lee
发明人： Young Hoon Kim , Sang Hoon Chu , Dong-Jun Lee , Hyung Jai Lee
IPC分类号： G11B5/596 , G11B21/10
CPC分类号： G11B5/556 , G11B5/59688
摘要： A hard disk drive that includes a voice coil motor and a micro-actuator. The micro-actuator is controlled by a servo that utilizes a micro-actuator controller and a corresponding micro-actuator transfer function. The servo enters a mode to self-determine at least one transfer function coefficient of the micro-actuator controller.
摘要翻译：包括音圈电机和微执行器的硬盘驱动器。微型致动器由利用微执行器控制器和相应微致动器传递功能的伺服控制。伺服进入模式以自行确定微致动器控制器的至少一个传递函数系数。

4. 发明授权

US07333288B2 Method and apparatus for single written-in Repeatable Run-Out correction function used in multi-stage actuation control of hard disk drive 失效
标题翻译：用于硬盘驱动器的多级驱动控制的单次写入可重复运行校正功能的方法和装置
公开(公告)号：US07333288B2
公开(公告)日：2008-02-19
申请号：US11482535
申请日：2006-07-06
申请人： Young-Hoon Kim , Sang Hoon Chu , Dong Jun Lee , Hyung Jai Lee
发明人： Young-Hoon Kim , Sang Hoon Chu , Dong Jun Lee , Hyung Jai Lee
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： RRO corrector function is formulated to partition the contribution of micro-actuator control from the other voice coil assembly contributions. Single stage actuation is supported by zeroing the micro-actuator control queue, otherwise multi-stage actuation is supported. The multi-stage actuation may include dual stage actuation and in some embodiments triple stage actuation. Triple stage further partitions RRO corrector function for the contribution of the second micro-actuator. Method of initializing an assembled hard disk drive creates hard disk drive as product, using the written-in parameter list for track on the disk surface to recreate the RRO corrector as RRO corrector filter using queues updated by NRRO corrector.
摘要翻译：制定RRO校正器功能，以分配微执行器控制与其他音圈组件的贡献。通过使微执行器控制队列归零来支持单级致动，否则支持多级致动。多级致动可以包括双级致动，并且在一些实施例中可以包括三级致动。三级进一步分割RRO校正功能，为第二个微型执行器的贡献。初始化组装好的硬盘驱动器的方法使用磁盘表面上的磁道的写入参数列表创建硬盘驱动器，以使用NRRO校正器更新的队列将RRO校正器重新创建为RRO校正器过滤器。

5. 发明申请

US20080088965A1 ONLINE IDENTIFICATION OF SECONDARY ACTUATOR TRANSFER FUNCTION VIA SYSTEM DECOUPLING IN MULTIPLE-STAGE ACTUATOR SERVO SYSTEMS IN DISK DRIVES 失效
标题翻译：二级执行机构传输功能的在线识别通过系统解码在多台驱动器伺服系统中的驱动
公开(公告)号：US20080088965A1
公开(公告)日：2008-04-17
申请号：US11580635
申请日：2006-10-12
申请人： Young Hoon Kim , Sang Hoon Chu , Dong-Jun Lee , Hyung Jai Lee
发明人： Young Hoon Kim , Sang Hoon Chu , Dong-Jun Lee , Hyung Jai Lee
IPC分类号： G11B5/596 , G11B21/02
CPC分类号： G11B5/556 , G11B5/59688
摘要： A hard disk drive that includes a voice coil motor and a micro-actuator. The micro-actuator is controlled by a servo that utilizes a micro-actuator controller and a corresponding micro-actuator transfer function. The servo enters a mode to self-determine at least one transfer function coefficient of the micro-actuator controller.
摘要翻译：包括音圈电机和微执行器的硬盘驱动器。微型致动器由利用微执行器控制器和相应微致动器传递功能的伺服控制。伺服进入模式以自行确定微致动器控制器的至少一个传递函数系数。

6. 发明申请

US20080007863A1 Method and apparatus for single written-in Repeatable Run-Out correction function used in multi-stage actuation control of hard disk drive 失效
公开(公告)号：US20080007863A1
公开(公告)日：2008-01-10
申请号：US11482535
申请日：2006-07-06
申请人： Young-Hoon Kim , Sang Hoon Chu , Dong Jun Lee , Hyung Jai Lee
发明人： Young-Hoon Kim , Sang Hoon Chu , Dong Jun Lee , Hyung Jai Lee
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： RRO corrector function is formulated to partition the contribution of micro-actuator control from the other voice coil assembly contributions. Single stage actuation is supported by zeroing the micro-actuator control queue, otherwise multi-stage actuation is supported. The multi-stage actuation may include dual stage actuation and in some embodiments triple stage actuation. Triple stage further partitions RRO corrector function for the contribution of the second micro-actuator. Method of initializing an assembled hard disk drive creates hard disk drive as product, using the written-in parameter list for track on the disk surface to recreate the RRO corrector as RRO corrector filter using queues updated by NRRO corrector.

7. 发明授权

US08228628B2 Data storage disk having variable location signal and disk drive using the data storage disk 失效
标题翻译：具有可变位置信号的数据存储盘和使用数据存储盘的磁盘驱动器
公开(公告)号：US08228628B2
公开(公告)日：2012-07-24
申请号：US12429243
申请日：2009-04-24
申请人： Kum-Jung Song , Sang Hoon Chu
发明人： Kum-Jung Song , Sang Hoon Chu
IPC分类号： G11B15/18
CPC分类号： G11B5/59655 , G11B5/59688 , G11B20/1217 , G11B27/322 , G11B2020/1284 , G11B2220/2516
摘要： A hard disk drive includes a magnetic head, at least one disk and a controller. A location signal is recorded on the at least one disk for determining a location of the magnetic head in relation to the at least one disk. The controller controls the location of the magnetic head based on the location signal decoded through the magnetic head. At least one of frequency and amplitude of the location signal is variable.
摘要翻译：硬盘驱动器包括磁头，至少一个磁盘和控制器。位置信号被记录在至少一个盘上，用于确定磁头相对于至少一个盘的位置。控制器基于通过磁头解码的位置信号来控制磁头的位置。位置信号的频率和幅度中的至少一个是可变的。

8. 发明申请

US20100053799A1 METHOD FOR ESTIMATING POSITION ERROR GAIN FOR HARD DISK DRIVES 失效
标题翻译：用于估计硬盘驱动器的位置误差增益的方法
公开(公告)号：US20100053799A1
公开(公告)日：2010-03-04
申请号：US12203855
申请日：2008-09-03
申请人： Chang Ik Kang , Sang Hoon Chu
发明人： Chang Ik Kang , Sang Hoon Chu
IPC分类号： G11B5/596
CPC分类号： G11B5/59622 , G11B5/59688
摘要： A hard disk drive with a controller that determines a position error signal gain. The position error signal gain is determined from a total servo loop gain and a function that is defined by a slope of a line of A and B servo bits measured at N off-track positions. The function determines an actual plant gain and thus provides a more accurate position error signal gain.
摘要翻译：具有控制器的硬盘驱动器，用于确定位置误差信号增益。位置误差信号增益由总伺服环路增益和由在N个非轨道位置测量的A和B伺服位的行的斜率确定的函数确定。该功能确定实际的工厂增益，从而提供更准确的位置误差信号增益。

9. 发明授权

US06967809B2 Method and apparatus providing spiral servo control for skewless read/writes in a hard disk drive 失效
标题翻译：为硬盘驱动器中的无偏差读/写提供螺旋伺服控制的方法和装置
公开(公告)号：US06967809B2
公开(公告)日：2005-11-22
申请号：US10202780
申请日：2002-07-24
申请人： Gyu Taek Kim , YoungDug Jung , Yeong Kyun (John) Lee , Sang Hoon Chu
发明人： Gyu Taek Kim , YoungDug Jung , Yeong Kyun (John) Lee , Sang Hoon Chu
IPC分类号： G11B21/10 , G11B5/596
CPC分类号： G11B5/59605 , G11B5/59633
摘要： The invention provides magnetic disks with the ability for consecutive tracks to be read or written continuously, removing the traversal of the gap between tracks which degrades bandwidth delivery performance. The invention includes a disk surface formatted with tracks, and sectors within these tracks, which vary in radius. The ending radius of a sector differs significantly from its starting radius. The ending radius of the last sector of one track is very close to the starting radius of its successor track, providing a spiral arrangement of tracks, each possessing a fixed number of sectors, and supporting continuous accessing of successive tracks.
摘要翻译：本发明提供具有能够连续读取或写入连续轨道的能力的磁盘，从而消除磁道之间的间隙的遍历，这降低了带宽传送性能。本发明包括用轨道格式化的盘表面，以及这些轨道内的扇区，半径不同。扇区的结束半径与起始半径有显着差异。一个轨道的最后一个扇区的结束半径非常接近其后续轨道的起始半径，提供一个螺旋排列的轨道，每个轨道具有固定数量的扇区，并支持连续轨道的连续访问。

10. 发明授权

US06744590B2 Seek trajectory adaptation in sinusoidal seek servo hard disk drives 失效
标题翻译：寻求正弦寻求伺服硬盘驱动器中的轨迹适应
公开(公告)号：US06744590B2
公开(公告)日：2004-06-01
申请号：US09859836
申请日：2001-05-16
申请人： Sang Hoon Chu , Ju Il Lee , Jun Seok Shim , Won Goo Kim
发明人： Sang Hoon Chu , Ju Il Lee , Jun Seok Shim , Won Goo Kim
IPC分类号： G11B5596
CPC分类号： G11B5/5547
摘要： A method, apparatus, and computer program product for a hard disk drive servomechanism. In one embodiment, the apparatus comprises a disk which has a surface, a spindle motor that rotates the disk, a transducer which can write information onto the disk and read information from the disk, and an actuator arm that can move the transducer across the surface of the disk. The apparatus further includes a controller. The controller can determine a seek length from a first track to a second track, determine a seek time based on the seek length, scale the seek time in response to a velocity error between a calculated velocity and a design velocity for the seek length, and control the actuator arm to move the transducer across the disk surface from the first track to the second track using an acceleration trajectory.
摘要翻译：一种用于硬盘驱动器伺服机构的方法，装置和计算机程序产品。在一个实施例中，该装置包括具有表面的盘，旋转盘的主轴电机，可以将信息写入盘并从盘读取信息的换能器以及能够使换能器穿过表面移动的致动器臂的磁盘。该装置还包括控制器。控制器可以确定从第一轨道到第二轨道的寻道长度，基于寻道长度确定寻道时间，响应于搜索长度的计算速度和设计速度之间的速度误差来缩放搜索时间;以及控制致动器臂以使用加速轨迹将换能器从第一轨道移动到盘表面。

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