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1. 发明授权

US07283321B1 Disk drives and methods allowing for dual stage actuator adaptive seek control and microactuator gain calibration 有权
标题翻译：磁盘驱动器和方法允许双级执行器自适应寻道控制和微型致动器增益校准
公开(公告)号：US07283321B1
公开(公告)日：2007-10-16
申请号：US11197572
申请日：2005-08-04
申请人： Yu Sun , Yunfeng Li , Lin Guo , Paul Yeagle
发明人： Yu Sun , Yunfeng Li , Lin Guo , Paul Yeagle
IPC分类号： G11B5/596
CPC分类号： G11B5/5552
摘要： A disk drive includes a disk, a head, a coarse actuator, a microactuator, and a servo controller. The microactuator positions the head relative to the disk. The coarse actuator positions the microactuator and the head relative to the disk. The servo controller controls the microactuator in accordance with a microactuator feedforward control signal that is provided by the servo controller based on a plurality of microactuator feedforward values. The servo controller tunes at least one microactuator feedforward value of the plurality of microactuator feedforward values. The servo controller scales the microactuator feedforward control signal in accordance with a microactuator feedforward gain, and the servo controller adjusts the microactuator feedforward gain based on a position error signal that is determined during a seek operation.
摘要翻译：磁盘驱动器包括盘，头，粗致动器，微致动器和伺服控制器。微型致动器将磁头相对于磁盘定位。粗执行器将微致动器和头相对于盘定位。伺服控制器根据由伺服控制器基于多个微致动器前馈值提供的微致动器前馈控制信号来控制微致动器。伺服控制器调谐多个微致动器前馈值的至少一个微致动器前馈值。伺服控制器根据微致动器前馈增益来缩放微致动器前馈控制信号，并且伺服控制器基于在寻道操作期间确定的位置误差信号来调节微致动器前馈增益。

2. 发明授权

US07126785B1 Multi-stage actuator disk drives, methods, and computer program products for seeking and then maintaining a transducer on track 有权
标题翻译：多级致动器磁盘驱动器，方法和计算机程序产品，用于寻找并保持传感器在轨上
公开(公告)号：US07126785B1
公开(公告)日：2006-10-24
申请号：US10963665
申请日：2004-10-13
申请人： Yunfeng Li , Yu Sun , Lin Guo
发明人： Yunfeng Li , Yu Sun , Lin Guo
IPC分类号： G11B5/596 , G11B21/02
CPC分类号： G11B5/5552 , G11B5/5547 , G11B5/596
摘要： Disk drives, methods, and computer program products are provided for controlling seeking of a transducer that is adjacent to a rotatable data storage disk in a disk drive. The disk drive includes a secondary actuator for positioning the transducer over a second range of movement, and a primary actuator for positioning the secondary actuator over a first range of movement that is larger than the second range of movement. The secondary actuator is controlled to move the transducer toward a target track on the disk while seeking. The primary actuator is controlled to move the secondary actuator toward the target track while simultaneously controlling the secondary actuator to maintain the transducer on the target track.
摘要翻译：提供了磁盘驱动器，方法和计算机程序产品，用于控制寻找与磁盘驱动器中的可旋转数据存储盘相邻的换能器。磁盘驱动器包括用于将换能器定位在第二移动范围上的辅助致动器，以及用于将辅助致动器定位在大于第二移动范围的第一移动范围上的主致动器。控制辅助致动器以在寻找时将传感器移向盘上的目标轨道。控制主致动器以将次级致动器朝向目标轨道移动，同时控制辅助致动器以将换能器保持在目标轨道上。

3. 发明授权

US07375911B1 Piezoelectric actuator and sensor for disk drive dual-stage servo systems 有权
标题翻译：用于磁盘驱动双级伺服系统的压电致动器和传感器
公开(公告)号：US07375911B1
公开(公告)日：2008-05-20
申请号：US10996543
申请日：2004-11-24
申请人： Yunfeng Li , Wei Guo , Lin Guo , Yu Sun
发明人： Yunfeng Li , Wei Guo , Lin Guo , Yu Sun
IPC分类号： G11B21/02 , G11B5/596 , G11B17/00 , G11B33/14 , G11B21/24
CPC分类号： G11B19/042 , G11B5/4826 , G11B5/483 , G11B5/5552 , G11B5/5582 , G11B5/596
摘要： A hard disk drive is disclosed comprising at least one disk rotatable about an axis, an actuator assembly moveable relative to the disk, a transducer positioned on the actuator assembly, an actuator signal line, a piezoelectric actuator element disposed on the actuator assembly and electrically interconnected to the actuator signal line, a processor, a sensor signal line and a piezoelectric sensor element for sensing a vibration. The piezoelectric sensor element is collocated with the piezoelectric actuator element and electrically interconnected to the processor by the sensor signal line. The piezoelectric actuator element is operable to move the at least one transducer relative to a surface of the disk. The piezoelectric sensor element is electrically isolated from the piezoelectric actuator element. A method for detecting a vibration in a hard disk drive actuator assembly is also disclosed.
摘要翻译：公开了一种硬盘驱动器，其包括至少一个可围绕轴可旋转的盘，可相对于盘移动的致动器组件，位于致动器组件上的换能器，致动器信号线，设置在致动器组件上的电压互连致动器信号线，用于感测振动的处理器，传感器信号线和压电传感器元件。压电传感器元件与压电致动器元件并置，并通过传感器信号线电连接到处理器。压电致动器元件可操作以相对于盘的表面移动至少一个换能器。压电传感器元件与压电致动器元件电隔离。还公开了一种用于检测硬盘驱动器致动器组件中的振动的方法。

4. 发明授权

US07027253B1 Microactuator servo control during self writing of servo data 失效
标题翻译：伺服数据自写时的微动机伺服控制
公开(公告)号：US07027253B1
公开(公告)日：2006-04-11
申请号：US11050118
申请日：2005-02-03
申请人： Yu Sun , Yunfeng Li , Lin Guo
发明人： Yu Sun , Yunfeng Li , Lin Guo
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/59633 , G11B5/5552 , G11B5/59666 , G11B5/59694
摘要： Compensation for disk mode disturbances during self-writing of servo data is provided in a manner that accounts for differences in orientation between the disk surface from which position information is derived and the disk surface on which servo data is written. Microactuators corresponding to upper surfaces of disks may have a wiring polarity that is out of phase with the wiring polarity of microactuators corresponding to upper surfaces of disks so that disk mode compensation signals supplied to the microactuators produce motion in opposite directions. The servo control system may supply signals to microactuators individually and select the polarities of those signals to account for differences in orientation between the disk surface from which position information is derived and the disk surface on which servo data is written.
摘要翻译：提供伺服数据自写入期间的磁盘模式干扰的补偿，其方式是考虑到导出位置信息的磁盘表面与写入伺服数据的磁盘表面之间的方向上的差异。对应于盘的上表面的微致动器可以具有与对应于盘的上表面的微致动器的布线极性相异的布线极性，使得提供给微致动器的盘模补偿信号产生相反方向的运动。伺服控制系统可以单独向微型致动器提供信号，并选择这些信号的极性，以解决导出位置信息的磁盘表面与写入伺服数据的磁盘表面之间的方向上的差异。

5. 发明授权

US07215499B1 Multi-stage actuator disk drive and methods for controlling a transducer with settle-switching state dependent feed-forward control 有权
标题翻译：多级致动器盘驱动器和用于控制具有稳定开关状态相关前馈控制的换能器的方法
公开(公告)号：US07215499B1
公开(公告)日：2007-05-08
申请号：US11180283
申请日：2005-07-13
申请人： Yunfeng Li , Yu Sun , Lin Guo , Xiaoping Hu
发明人： Yunfeng Li , Yu Sun , Lin Guo , Xiaoping Hu
IPC分类号： G11B21/02
CPC分类号： G11B5/5547 , G11B5/5552
摘要： A disk drive and method are provided for controlling seeking of a transducer that is adjacent to a rotatable data storage disk in a disk drive. The disk drive includes an actuator for positioning the transducer relative to the disk, the method comprising. The actuator is controlled to move the transducer toward a target track on the disk during an initial phase of a seek mode during which the transducer is primarily accelerated toward the target track. During a settle phase of the seek mode which follows the initial phase the actuator is controlled to settle the transducer onto the target track. An initial position, an initial velocity, and an initial acceleration of the transducer are determined at a phase switch time at about when control of the actuator switches from the initial phase to the settle phase of the seek mode. Feed-forward control information is generated based on the determined initial position, initial velocity, and initial acceleration of the transducer. The actuator is controlled responsive to the feed-forward control information to settle the transducer onto the target track during the settle phase of the seek mode.
摘要翻译：提供了一种磁盘驱动器和方法，用于控制寻找与磁盘驱动器中的可旋转数据存储盘相邻的换能器。磁盘驱动器包括用于相对于盘定位换能器的致动器，该方法包括。在寻像模式的初始阶段期间，致动器被控制以将传感器移向盘上的目标轨道，在该模式期间，换能器主要朝向目标轨道加速。在跟随初始阶段的搜索模式的稳定阶段期间，致动器被控制以将换能器定位到目标轨道上。在致动器的控制从寻找模式的初始阶段到稳定阶段切换的时刻，在相位切换时刻确定换能器的初始位置，初始速度和初始加速度。基于确定的换能器的初始位置，初始速度和初始加速度产生前馈控制信息。响应于前馈控制信息控制致动器，以在搜索模式的稳定阶段期间将换能器稳定在目标轨道上。

6. 发明授权

US07286317B1 Disk drive that compensates for repeatable runout of a disk based on measured timing between servo information and methods thereof 有权
标题翻译：基于伺服信息及其方法之间的测量定时来补偿盘的可重复跳动的磁盘驱动器
公开(公告)号：US07286317B1
公开(公告)日：2007-10-23
申请号：US11112391
申请日：2005-04-22
申请人： Yunfeng Li , Yu Sun
发明人： Yunfeng Li , Yu Sun
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A disk drive includes a rotatable data storage disk, a transducer, an actuator, and a controller. The disk includes information and data tracks that are defined thereon. The transducer is configured to read the information from the disk. The actuator is configured to position the transducer relative to the data tracks. The controller is configured to measure timing between particular information on the disk, to estimate repeatable runout of the disk based on the measured timing, and to compensate for repeatable runout of the disk responsive to the estimated repeatable runout while positioning the transducer relative to a selected track.
摘要翻译：磁盘驱动器包括可旋转数据存储盘，换能器，致动器和控制器。磁盘包括在其上定义的信息和数据轨道。传感器被配置为从盘读取信息。致动器被配置成相对于数据轨道定位换能器。控制器被配置为测量盘上的特定信息之间的定时，以基于测量的定时估计盘的可重复跳动，并且响应于估计的可重复跳动来补偿盘的可重复跳动，同时相对于所选择的定位跟踪。

7. 发明授权

US07382570B1 Dynamically controlling seek profile in an acceleration tracking seek controller 有权
标题翻译：在加速跟踪寻道控制器中动态地控制寻道曲线
公开(公告)号：US07382570B1
公开(公告)日：2008-06-03
申请号：US11450093
申请日：2006-06-09
申请人： Yunfeng Li , Yu Sun
发明人： Yunfeng Li , Yu Sun
IPC分类号： G11B5/596
CPC分类号： G11B5/5547
摘要： Methods of controlling seeking of a transducer that is adjacent to a rotatable disk in a disk drive are disclosed. The methods may include accelerating the transducer radially across the rotatable disk from an initial track on the rotatable disk toward a destination track on the rotatable disk, estimating a deceleration switching position/velocity point, estimating a maximum deceleration position/velocity point following the deceleration switching position/velocity point, and estimating a deceleration current required to decelerate the transducer from a non-zero velocity at the maximum deceleration position/velocity point to zero velocity at the destination track. The estimated deceleration current is compared to a maximum available deceleration current, and responsive to a determination that the current required to decelerate the transducer from the maximum deceleration point to the destination track exceeds the maximum available deceleration current, the estimated deceleration switching point is adjusted. Related disk drive apparatus are also disclosed.
摘要翻译：公开了在磁盘驱动器中控制与可旋转盘相邻的换能器的寻找方法。这些方法可以包括将转换器从可旋转磁盘上的初始轨道径向地加速到可旋转磁盘上的目标轨道，估计减速切换位置/速度点，估计减速切换之后的最大减速位置/速度点位置/速度点，并且估计将换能器从最大减速位置/速度点处的非零速度减速到目的地轨道处的零速度所需的减速电流。将估计的减速电流与最大可用减速电流进行比较，并且响应于确定将换能器从最大减速点减速到目的地轨道所需的电流超过最大可用减速电流，则调整估计减速度切换点。还公开了相关的磁盘驱动装置。

8. 发明授权

US07679851B1 Methods and structure for improved disk head switching to avoid zipper zones 有权
标题翻译：改善磁头切换以避免拉链区域的方法和结构
公开(公告)号：US07679851B1
公开(公告)日：2010-03-16
申请号：US11122838
申请日：2005-05-05
申请人： Yu Sun , Don Brunnett , Lin Guo
发明人： Yu Sun , Don Brunnett , Lin Guo
IPC分类号： G11B5/09
CPC分类号： G11B5/59616 , G11B5/012
摘要： Methods and structure for switching heads on a multiple recording surface disk drive that uses bi-directional radial writing toward a zipper zone at a middle diameter. When switching from a first head to a second head, features and aspects hereof assure that the second head will not be positioned in the zipper zone of the corresponding second surface and hence will not lose track following servo synchronization and control. In one aspect, added buffer or guard tracks having valid servo information but no data are added on either side of the zipper zone to assure that under the worst-case misalignment of surfaces the second head will not be positioned in its corresponding zipper zone when switching from the first head.
摘要翻译：在多个记录表面磁盘驱动器上切换磁头的方法和结构，其使用向中间直径的拉链区域进行双向径向书写。当从第一头切换到第二头部时，其特征和方面确保第二头部不会被定位在相应的第二表面的拉链区域中，因此在伺服同步和控制之后不会失去跟踪。在一个方面，在拉链区域的任一侧添加了具有有效的伺服信息而没有数据的附加的缓冲器或保护轨道，以确保在最差的表面未对准的情况下，当切换时，第二头部将不位于相应的拉链区域从第一个头。

9. 发明授权

US07414809B2 Servo writing using radially overlapped servo segments 有权
标题翻译：伺服写入使用径向重叠的伺服段
公开(公告)号：US07414809B2
公开(公告)日：2008-08-19
申请号：US11750820
申请日：2007-05-18
申请人： S. Craig Smith , Stan Shepherd , Yu Sun , Yuan Roy Chen , Lin Guo
发明人： S. Craig Smith , Stan Shepherd , Yu Sun , Yuan Roy Chen , Lin Guo
IPC分类号： G11B5/596
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： In accordance with various embodiments, initial servo data are written to a storage medium as a series of radially overlapped spiral segments. Final servo data are thereafter written to the medium while concurrently servoing on said overlapped segments.
摘要翻译：根据各种实施例，初始伺服数据作为一系列径向重叠的螺旋段被写入存储介质。最后伺服数据此后被写入介质，同时在所述重叠段上进行伺服。

10. 发明授权

US07230789B1 Method and apparatus for performing a self-servo write operation in a disk drive using spiral servo information 有权
标题翻译：在使用螺旋伺服信息的磁盘驱动器中执行自伺服写入操作的方法和装置
公开(公告)号：US07230789B1
公开(公告)日：2007-06-12
申请号：US11102467
申请日：2005-04-08
申请人： Don Brunnett , Yu Sun , Lin Guo
发明人： Don Brunnett , Yu Sun , Lin Guo
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59661
摘要： The present invention is directed to a method and apparatus for performing a self-servo write operation in a disk drive. In one embodiment, the disk drive includes a disk surface having a read head and a write head associated therewith. Spiral servo information is written onto the disk surface using a servo track writer. The read head reads the spiral servo information and is used to position the write head, which writes a small band of final servo information onto the disk surface. The small band of final servo information may be embedded servo information. Importantly, the small band of final servo information is not written using the servo track writer. The write head is also used to write self-servo write instructions into the small band of final servo information. Subsequently, the self-servo write instructions are read and a self-servo write operation is performed using the spiral servo information.
摘要翻译：本发明涉及一种用于在磁盘驱动器中执行自伺服写入操作的方法和装置。在一个实施例中，盘驱动器包括具有读头的盘表面和与其相关联的写头。使用伺服记录器将螺旋伺服信息写入磁盘表面。读头读取螺旋伺服信息，并用于将写入头定位在磁盘表面上，将写入磁头写入最小伺服信息的一小段。最终伺服信息的小带可以是嵌入式伺服信息。重要的是，最终的伺服信息的小带没有使用伺服记录器写入。写头还用于将自伺服写指令写入最终伺服信息的小波段。随后，读取自伺服写指令，并使用螺旋伺服信息执行自伺服写操作。

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