公开(公告)号：US6101064A

公开(公告)日：2000-08-08

申请号：US21513

申请日：1998-02-10

申请人： Stanley H. Shepherd

发明人： Stanley H. Shepherd

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

CPC分类号： G11B5/5534 ,  G11B21/085 ,  G11B21/106 ,  G11B5/59627 ,  G11B5/59644 ,  G11B5/59655 ,  G11B5/59688 ,  G11B5/5965

摘要： Methods and apparatus for ascertaining a position of a read/write head relative to a reference position on a rotatable disk in a computer disk drive are disclosed. In one aspect of the present invention, a method for determining the position of a read/write head relative to a reference position on a rotatable disk in a computer disk drive includes reading amplitudes of a set of servo bursts embedded in tracks of the disk and classifying the servo bursts into a converging servo burst set and a detection servo burst set around the reference position. The method also includes forming a position error signal by augmenting a detection servo burst signal with a converging servo burst signal as well as a normalization factor. The converging servo burst signal is formed from amplitudes of the converging servo burst set at the position of the read/write head. The detection servo burst signal is formed from amplitudes of the detection servo burst set at the position of the read/write head. The position error signal represents an offset from the reference position.

摘要翻译： 公开了用于确定读/写头相对于计算机磁盘驱动器中的可旋转盘上的参考位置的位置的方法和装置。 在本发明的一个方面，一种用于确定读/写磁头相对于计算机磁盘驱动器中的可旋转磁盘上的参考位置的位置的方法包括：读取嵌入在磁盘轨道中的一组伺服脉冲串的振幅;以及 将伺服脉冲串分类为聚合伺服脉冲组合和围绕参考位置设置的检测伺服脉冲串。 该方法还包括通过利用会聚伺服脉冲串信号增强检测伺服脉冲串信号以及归一化因子来形成位置误差信号。 会聚伺服脉冲串信号由设置在读/写头位置的会聚伺服脉冲串的幅度形成。 检测伺服脉冲串信号由在读/写头位置设置的检测伺服脉冲串的幅度形成。 位置误差信号表示与参考位置的偏移。

公开(公告)号：US4360336A

公开(公告)日：1982-11-23

申请号：US203035

申请日：1980-11-03

申请人： Stanley H. Shepherd

发明人： Stanley H. Shepherd

IPC分类号： F23N5/00 ,  F23N5/02 ,  F23N3/00

CPC分类号： F23N5/003 ,  F23N2023/00 ,  F23N2025/10

摘要： A combustion control system which utilizes non-linear parameters for controlling a combustion process with greater efficiency than has heretofore been available is disclosed. According to the method, the quantity of carbon monoxide, unburned hydrocarbons, and/or opacity is measured and compared with a predetermined value for that parameter. Error signals for each parameter are generated and supplied to an error selector which chooses the error signal of the largest magnitude. The error signal is then compensated for the non-linear relationship between the parameter and the amount of excess air supplied to the combustion process. Other operations, including checking the proposed control signal output against one or more constraints are performed, and if satisfactory, an output signal is supplied to a servo-mechanism for controlling the air flow to the combustion process.

摘要翻译： 公开了一种燃烧控制系统，其利用非线性参数来控制燃烧过程，其效率比迄今为止可获得的效率高。 根据该方法，测量一氧化碳，未燃碳氢化合物的量和/或不透明度，并与该参数的预定值进行比较。 生成每个参数的误差信号，并提供给选择最大幅度的误差信号的误差选择器。 然后，误差信号被补偿参数与供给燃烧过程的过量空气量之间的非线性关系。 执行其他操作，包括针对一个或多个约束检查所提出的控制信号输出，并且如果令人满意，则将输出信号提供给用于控制到燃烧过程的空气流的伺服机构。

公开(公告)号：US20090175147A1

公开(公告)日：2009-07-09

申请号：US12008144

申请日：2008-01-08

申请人： Stanley H. Shepherd

发明人： Stanley H. Shepherd

IPC分类号： G11B5/58

CPC分类号： G11B5/59633 ,  G11B5/59627 ,  G11B5/59661 ,  G11B5/59666

摘要： A method for writing servo onto a disk of a hard disk drive. The method includes writing a plurality of spiral servo signals with a head. The spiral servo signals are used to generate position error signals and write a plurality of servo patterns. A write current of the head is varied for at least one servo pattern. A PES/WC relationship between the position error signals and the write current is determined and a plurality of final servo patterns are written by utilizing the PES/WC relationship and varying the write current. Varying the write current changes the trailing edge of the servo bits and controls the position of the track center. The PES/WC relationship allows the system to compensate for excursions within a single revolution of the disk.

摘要翻译： 一种将伺服写入硬盘驱动器的盘上的方法。 该方法包括用头部书写多个螺旋伺服信号。 螺旋伺服信号用于产生位置误差信号并写入多个伺服模式。 对于至少一个伺服模式，磁头的写入电流是变化的。 确定位置误差信号和写入电流之间的PES / WC关系，并通过利用PES / WC关系写入多个最终伺服模式并改变写入电流。 改变写入电流改变伺服位的后沿并控制轨道中心的位置。 PES / WC关系允许系统补偿盘旋转一圈内的偏移。

公开(公告)号：US07154689B1

公开(公告)日：2006-12-26

申请号：US10945371

申请日：2004-09-20

申请人： Stanley H. Shepherd ,  Yu Sun ,  Lin Guo ,  John VanLaanen

发明人： Stanley H. Shepherd ,  Yu Sun ,  Lin Guo ,  John VanLaanen

IPC分类号： G11B5/09

CPC分类号： G11B5/59688

摘要： Methods for making a disk drive, apparatus for writing servo bursts on a disk, and disk drive apparatus are provided. The disk drive includes a disk and transducer adjacent to the disk. The transducer includes a read element and a write element. A width of the read element is determined. A servo track pitch is determined based on the read element width. Servo bursts are written in servo tracks on the disk with the write element based on the servo track pitch.

摘要翻译： 提供了制造磁盘驱动器的方法，用于在盘上写入伺服脉冲串的装置以及磁盘驱动装置。 磁盘驱动器包括与磁盘相邻的磁盘和传感器。 换能器包括读取元件和写入元件。 读取元素的宽度被确定。 基于读取的元件宽度确定伺服轨道间距。 伺服脉冲串写入磁盘上的伺服磁道，其中写入元件基于伺服磁道间距。

公开(公告)号：US6061200A

公开(公告)日：2000-05-09

申请号：US927616

申请日：1997-09-11

申请人： Stanley H. Shepherd ,  Richard M. Ehrlich ,  James V. Wiseman ,  Richard T. Curran ,  William R. Akin, Jr.

发明人： Stanley H. Shepherd ,  Richard M. Ehrlich ,  James V. Wiseman ,  Richard T. Curran ,  William R. Akin, Jr.

IPC分类号： G11B5/596 ,  G11B21/10

CPC分类号： G11B5/59627 ,  G11B5/59638 ,  G11B5/59655

摘要： Embedded servo sectors within a data track of a hard disk drive including a rotating data storage disk and a closed loop rotary actuator structure for positioning a data transducer head relative to the data track are written by a method including the steps of positioning the rotary actuator structure relative to the data track with a laser-interferometer-based servo writer and writing a pattern of circumferentially sequential, radially offset fine position bursts within each servo sector with the data transducer head, this step including writing-in undetermined position errors within each pattern being written, moving the disk drive to a self scan environment away from the servo writer, operating the rotary actuator structure in closed loop for following the data track by reference to the servo burst pattern, extracting the undetermined position error from each pattern thereby to iteratively determine written-in position errors, generating burst correction values from the determined written-in position errors, and writing the burst correction values to the data track for later use by the closed loop rotary actuator structure during following of the data track to remove the written-in position errors.

摘要翻译： 包括旋转数据存储盘的硬盘驱动器的数据轨道内的嵌入式伺服扇区和用于相对于数据轨道定位数据变换器头的闭环旋转致动器结构通过包括以下步骤的方法来写入：​​将旋转致动器结构 相对于具有基于激光干涉仪的伺服写入器的数据轨迹，并且使用数据换能器头在每个伺服扇区内写入周向顺序的径向偏移的精细位置脉冲串的模式，该步骤包括在每个模式内写入未定位置误差 写入，将磁盘驱动器移动到远离伺服写入器的自扫描环境，通过参考伺服脉冲串模式在闭环中操作旋转致动器结构以跟随数据轨迹，从每个图案提取未定位置误差，从而迭代地确定 写入位置误差，从确定的wr产生突发校正值 输入位置误差，以及将脉冲串校正值写入数据轨道，以便在跟踪数据轨道期间由闭环旋转致动器结构稍后使用以消除写入位置误差。

公开(公告)号：US07768735B2

公开(公告)日：2010-08-03

申请号：US11846429

申请日：2007-08-28

申请人： Stanley H. Shepherd ,  Bruce Liikanen

发明人： Stanley H. Shepherd ,  Bruce Liikanen

IPC分类号： G11B21/02 ,  G11B5/09 ,  G11B5/596

CPC分类号： G11B5/59688 ,  G11B5/5526

摘要： In accordance with various embodiments, an angular location of a first servo field along an annular track is determined in relation to a difference between a first code value of the first servo field and a second code value of a second servo field along the track. A radial location of the track is obtained in relation to the determined angular location of the first servo field.

摘要翻译： 根据各种实施例，沿着环形轨道的第一伺服磁场的角位置关于第一伺服磁场的第一代码值和沿着磁道的第二伺服磁场的第二代码值之间的差来确定。 相对于所确定的第一伺服场的角位置获得轨道的径向位置。

公开(公告)号：US07688542B2

公开(公告)日：2010-03-30

申请号：US12217443

申请日：2008-07-02

申请人： Kwong T. Chan ,  Linh N. Nguyen ,  Stanley H. Shepherd

发明人： Kwong T. Chan ,  Linh N. Nguyen ,  Stanley H. Shepherd

IPC分类号： G11B5/596

CPC分类号： G11B5/59644

摘要： A method for writing servo onto a disk of a hard disk drive with a servo writer. The method includes writing a plurality of spiral servo signals onto a disk. The spiral servo signals include a plurality of short spirals separated by unequal distances. The short spirals are detected by determining the unequal distances and used to write a plurality of servo patterns. The unequal distances provide information of the short spirals at different quadrants of the disk. The distances between a bank of odd short spirals is different than a bank of even short spirals which allows the servo writer to determine whether the bank is odd or even without switching banks. Either the even or odd bank of short spirals can be used to locate a starting reference point from which the servo writer can count spirals and write A, B, C and D servo bursts.

摘要翻译： 一种使用伺服写入器将伺服写入硬盘驱动器的盘的方法。 该方法包括将多个螺旋伺服信号写入到盘上。 螺旋伺服信号包括由不等距离分开的多个短螺旋。 通过确定不相等的距离并且用于写入多个伺服模式来检测短螺旋。 不平等的距离提供了在盘的不同象限下的短螺旋线的信息。 奇数短螺旋线之间的距离不同于甚至是短螺旋线，允许伺服写入器确定银行是奇数还是没有交换银行。 可以使用偶数或奇数组的短螺旋线来定位起始参考点，伺服写入器可以从该参考点计数螺旋并写入A，B，C和D伺服脉冲串。

公开(公告)号：US20100002333A1

公开(公告)日：2010-01-07

申请号：US12217443

申请日：2008-07-02

申请人： Kwong T. Chan ,  Linh N. Nguyen ,  Stanley H. Shepherd

发明人： Kwong T. Chan ,  Linh N. Nguyen ,  Stanley H. Shepherd

IPC分类号： G11B5/596

CPC分类号： G11B5/59644

摘要： A method for writing servo onto a disk of a hard disk drive with a servo writer. The method includes writing a plurality of spiral servo signals onto a disk. The spiral servo signals include a plurality of short spirals separated by unequal distances. The short spirals are detected by determining the unequal distances and used to write a plurality of servo patterns. The unequal distances provide information of the short spirals at different quadrants of the disk. The distances between a bank of odd short spirals is different than a bank of even short spirals which allows the servo writer to determine whether the bank is odd or even without switching banks. Either the even or odd bank of short spirals can be used to locate a starting reference point from which the servo writer can count spirals and write A, B, C and D servo bursts.

公开(公告)号：US6064542A

公开(公告)日：2000-05-16

申请号：US907581

申请日：1997-08-08

申请人： Stanley H. Shepherd

发明人： Stanley H. Shepherd

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

CPC分类号： G11B5/59655 ,  G11B21/085 ,  G11B21/106 ,  G11B5/5534 ,  G11B5/59627 ,  G11B5/59644 ,  G11B5/59688 ,  G11B5/5965

摘要： A method for ascertaining a position of a read/write head relative to a reference position on a rotatable disk in a computer disk drive. The method includes reading amplitudes of a set of servo bursts embedded in tracks of the disk and classifying the servo bursts into a converging servo burst set and a detection servo burst set around the reference position. The method also includes forming a position error signal by normalizing a detection servo burst signal with a converging servo burst signal. The converging servo burst signal is formed from amplitudes of the converging servo burst set at the position of the read/write head. The detection servo burst signal is formed from amplitudes of the detection servo burst set at the position of the read/write head. The position error signal represents an offset from the reference position.

摘要翻译： 一种用于确定读/写头相对于计算机盘驱动器中的可旋转盘上的参考位置的位置的方法。 该方法包括读取嵌入在盘的轨道中的一组伺服脉冲串的振幅，并将伺服脉冲串分类为聚合伺服脉冲组合和围绕参考位置设置的检测伺服脉冲串。 该方法还包括通过用会聚的伺服脉冲信号对检测伺服脉冲串信号进行归一化来形成位置误差信号。 会聚伺服脉冲串信号由设置在读/写头位置的会聚伺服脉冲串的幅度形成。 检测伺服脉冲串信号由在读/写头位置设置的检测伺服脉冲串的幅度形成。 位置误差信号表示与参考位置的偏移。

公开(公告)号：US08169732B2

公开(公告)日：2012-05-01

申请号：US12008144

申请日：2008-01-08

申请人： Stanley H. Shepherd

发明人： Stanley H. Shepherd

IPC分类号： G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59627 ,  G11B5/59661 ,  G11B5/59666

摘要： A method for writing servo onto a disk of a hard disk drive. The method includes writing a plurality of spiral servo signals with a head. The spiral servo signals are used to generate position error signals and write a plurality of servo patterns. A write current of the head is varied for at least one servo pattern. A PES/WC relationship between the position error signals and the write current is determined and a plurality of final servo patterns are written by utilizing the PES/WC relationship and varying the write current. Varying the write current changes the trailing edge of the servo bits and controls the position of the track center. The PES/WC relationship allows the system to compensate for excursions within a single revolution of the disk.

摘要翻译： 一种将伺服写入硬盘驱动器的盘上的方法。 该方法包括用头部书写多个螺旋伺服信号。 螺旋伺服信号用于产生位置误差信号并写入多个伺服模式。 对于至少一个伺服模式，磁头的写入电流是变化的。 确定位置误差信号和写入电流之间的PES / WC关系，并通过利用PES / WC关系写入多个最终伺服模式并改变写入电流。 改变写入电流改变伺服位的后沿并控制轨道中心的位置。 PES / WC关系允许系统补偿盘旋转一圈内的偏移。