公开(公告)号：US06449116B2

公开(公告)日：2002-09-10

申请号：US09781363

申请日：2001-02-12

申请人： John C. Morris ,  Thomas C. Zirps

发明人： John C. Morris ,  Thomas C. Zirps

IPC分类号： G11B5596

CPC分类号： G11B5/59627 ,  G11B5/59605 ,  G11B21/106

摘要： A method and apparatus for compensating for repeatable run-out errors in a disc drive is provided in which transfer function values for a servo loop in the disc drive are first determined. A sequence of repeatable run-out values for a portion of the disc drive is then determined. A transform is applied to the sequence of repeatable run-out values to obtain frequency-domain repeatable run-out values. Each frequency-domain repeatable run-out value is divided by a respective transfer function value to produce a sequence of frequency-domain compensation values which are then stored. An inverse transform is applied to the frequency-domain compensation values to obtain a sequence of time-domain compensation values. The sequence of time-domain compensation values is inserted into the servo loop.

摘要翻译： 提供了用于补偿盘驱动器中可重复的跳动误差的方法和装置，其中首先确定盘驱动器中的伺服环路的传递函数值。 然后确定盘驱动器的一部分的可重复耗尽值的序列。 将变换应用于可重复耗尽值的序列，以获得频域可重复的耗尽值。 每个频域可重复跳出值被相应的传递函数值除以产生频域补偿值序列，然后存储该序列。 对频域补偿值进行逆变换，以获得时域补偿值的序列。 时域补偿值序列插入到伺服回路中。

公开(公告)号：US07589930B2

公开(公告)日：2009-09-15

申请号：US11724124

申请日：2007-03-14

申请人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

发明人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： Compensation for repeated runout (RRO) error, such as in a data storage device servo circuit, is preferably carried out by obtaining a population distribution of RRO error values from at least selected ones of a subset of tracks. An RRO error compensation value is determined for each one of the subset of tracks when a variance characteristic of said population distribution meets a selected criterion. Preferably, a first track of a storage medium has a servo field at a first angular position on the medium, a repeated runout (RRO) error compensation field at a second angular position on the medium, and a user data field at a third angular position on the medium. An immediately adjacent second track preferably has a servo field at the first angular position and a user data field at the second angular position in lieu of an RRO error compensation field.

摘要翻译： 针对重复跳动（RRO）错误的补偿，例如在数据存储设备伺服电路中，优选地通过从轨道子集中的至少选定的RRO误差值获得RRO误差值的总体分布来执行。 当所述人口分布的方差特征满足所选择的标准时，对于轨道子集中的每一个确定RRO误差补偿值。 优选地，存储介质的第一轨道在介质上的第一角度位置处具有伺服磁场，在介质上的第二角位置处的重复跳动（RRO）误差补偿场，以及在第三角位置处的用户数据场 在媒体上 最近相邻的第二轨道优选地具有位于第一角位置处的伺服场，而在第二角位置具有用户数据场，而不是RRO误差补偿场。

公开(公告)号：US20080225654A1

公开(公告)日：2008-09-18

申请号：US11724124

申请日：2007-03-14

申请人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

发明人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

IPC分类号： G11B7/00

CPC分类号： G11B5/59627

摘要： Compensation for repeated runout (RRO) error, such as in a data storage device servo circuit, is preferably carried out by obtaining a population distribution of RRO error values from at least selected ones of a subset of tracks. An RRO error compensation value is determined for each one of the subset of tracks when a variance characteristic of said population distribution meets a selected criterion. Preferably, a first track of a storage medium has a servo field at a first angular position on the medium, a repeated runout (RRO) error compensation field at a second angular position on the medium, and a user data field at a third angular position on the medium. An immediately adjacent second track preferably has a servo field at the first angular position and a user data field at the second angular position in lieu of an RRO error compensation field.

摘要翻译： 针对重复跳动（RRO）错误的补偿，例如在数据存储设备伺服电路中，优选地通过从轨道子集中的至少选定的RRO误差值获得RRO误差值的总体分布来执行。 当所述人口分布的方差特征满足所选择的标准时，对于轨道子集中的每一个确定RRO误差补偿值。 优选地，存储介质的第一轨道在介质上的第一角度位置处具有伺服磁场，在介质上的第二角位置处的重复跳动（RRO）误差补偿场，以及在第三角位置处的用户数据场 在媒体上 最近相邻的第二轨道优选地具有位于第一角位置处的伺服场，而在第二角位置具有用户数据场，而不是RRO误差补偿场。

公开(公告)号：US06847503B2

公开(公告)日：2005-01-25

申请号：US10277768

申请日：2002-10-22

申请人： Tao Zhang ,  John Christopher Morris ,  Thomas C. Zirps

发明人： Tao Zhang ,  John Christopher Morris ,  Thomas C. Zirps

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： A system and method for correcting repeatable runout errors during manufacture of a disc drive. The system includes a Kalman filter having a recursive learning gain input and includes a recursive learning Again-setting circuit coupled to the recursive learning gain input. The recursive learning gain is initially set based on an estimate of a ratio of non-repeatable run out error to an estimate of the repeatable run out error. On subsequent recursions, the recursive learning gain-setting is reduced.

摘要翻译： 一种用于在盘驱动器制造期间校正可重复跳动误差的系统和方法。 该系统包括具有递归学习增益输入的卡尔曼滤波器，并且包括耦合到递归学习增益输入的递归学习再次设置电路。 初始设置递归学习增益是基于不可重复运行误差与可重复运行误差的估计的估计。 在随后的递归中，减少递归学习增益设置。