公开(公告)号：US06867949B1

公开(公告)日：2005-03-15

申请号：US10053934

申请日：2002-01-22

申请人： Lin Guo ,  David M. Tung ,  Xiaoping Hu ,  Wei Guo ,  William M. Marvin, Jr. ,  Mark S. Seymour

发明人： Lin Guo ,  David M. Tung ,  Xiaoping Hu ,  Wei Guo ,  William M. Marvin, Jr. ,  Mark S. Seymour

IPC分类号： G11B5/55 ,  G11B5/596

CPC分类号： G11B5/5534 ,  G11B5/59633

摘要： The present invention is directed to a push-pin assembly for use with a positioning arm of a disk drive servo writer. The push-pin assembly promotes vibrational damping between the push-pin assembly and the actuator arm. Push-pin assemblies of the invention generally include a contact pin having a shaft and a contact head. The push-pin assembly also includes a body having a contact pin receptacle recessed into an end so that at least a portion of the contact pin shaft can be disposed in the receptacle. The contact head is thus disposed beyond the end of the body which includes the contact pin receptacle. The push-pin assembly additionally includes a vibration damper disposed between at least a portion of the contact pin shaft and the body.

摘要翻译： 本发明涉及一种与盘驱动伺服写入器的定位臂一起使用的推销组件。 推销组件促进推销组件和致动器臂之间的振动阻尼。 本发明的推销组件通常包括具有轴和接触头的接触销。 推销组件还包括具有凹入到端部中的接触针插座的本体，使得接触针轴的至少一部分可以设置在容座中。 因此，接触头设置在包括接触针座的主体的端部之外。 推针组件还包括设置在接触销轴的至少一部分与主体之间的振动阻尼器。

公开(公告)号：US07035041B1

公开(公告)日：2006-04-25

申请号：US10366544

申请日：2003-02-12

申请人： Lin Guo ,  Xiaoping Hu ,  Wei Guo

发明人： Lin Guo ,  Xiaoping Hu ,  Wei Guo

IPC分类号： G11B5/596

CPC分类号： G11B5/596 ,  G11B5/5552

摘要： A control system and method for a disk drive comprising first and second actuator arms. The control system comprises first and second stages and a reset system. The first stage displaces the first arm. The second stage displaces the second arm relative to the first arm. The second stage defines a displacement offset when the disk drive begins a seek operation. The reset system discharges at least a portion of the displacement offset over time.

摘要翻译： 一种用于盘驱动器的控制系统和方法，包括第一和第二致动臂。 控制系统包括第一和第二阶段以及复位系统。 第一阶段取代了第一臂。 第二级相对于第一臂移动第二臂。 第二阶段定义磁盘驱动器开始搜索操作时的位移偏移。 复位系统随着时间的推移排出位移偏移的至少一部分。

公开(公告)号：US06975477B1

公开(公告)日：2005-12-13

申请号：US10430368

申请日：2003-05-05

申请人： Xiaoping Hu ,  Lin Guo ,  Wei Guo ,  Jong-Ming Lin

发明人： Xiaoping Hu ,  Lin Guo ,  Wei Guo ,  Jong-Ming Lin

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B15/18

CPC分类号： G11B5/596 ,  G11B5/5552

摘要： A servo system for displacing a head relative to a disk of a hard disk drive. The servo system comprises a dual-stage actuator, a calibration signal generator, and a calibration factor generator. The calibration signal generator generates a calibration signal having a calibration portion. The calibration factor generator generates a calibration factor. The servo system operates in operating and calibration servo modes. In the operating mode, the system defines first and second servo loops. The calibration factor is used as one of the parameters of the second servo loop. In the calibration servo mode, the calibration signal forms the second control signal, and the calibration factor generator generates the calibration factor based on movement of the head before any substantial response of the third servo loop to the calibration portion.

摘要翻译： 一个用于相对于硬盘驱动器的磁盘移动磁头的伺服系统。 伺服系统包括双级致动器，校准信号发生器和校准因子发生器。 校准信号发生器产生具有校准部分的校准信号。 校准因子发生器产生校准因子。 伺服系统在操作和校准伺服模式下工作。 在操作模式下，系统定义了第一和第二伺服回路。 校准因子被用作第二伺服回路的参数之一。 在校准伺服模式中，校准信号形成第二控制信号，并且校准因子发生器在第三伺服回路的任何实质响应到校准部分的任何实质响应之前基于头的运动产生校准因子。

公开(公告)号：US20090168232A1

公开(公告)日：2009-07-02

申请号：US12006329

申请日：2007-12-31

申请人： Wei Guo ,  Xiaoping Hu

发明人： Wei Guo ,  Xiaoping Hu

IPC分类号： G11B5/596

CPC分类号： G11B5/5552

摘要： A microactuator reference limit used to prevent over-accumulation of internal states may be set based on the microactuator's mechanical properties and is applied at the reference point to the microactuator servo subsystem. A microactuator variable input limit to prevent over-accumulation of internal states may be dynamically determined based on the difference between a signal corresponding to the maximum physical stroke of the microactuator and an estimated motion of the microactuator. Either configuration of servo system automatically ensures that all the internal states of the microactuator controller will not over-react and cause excessive overshoot, sluggish response, and/or saturation.

公开(公告)号：US07595956B2

公开(公告)日：2009-09-29

申请号：US12006329

申请日：2007-12-31

申请人： Wei Guo ,  Xiaoping Hu

发明人： Wei Guo ,  Xiaoping Hu

IPC分类号： G11B5/596

CPC分类号： G11B5/5552

摘要： A microactuator reference limit used to prevent over-accumulation of internal states may be set based on the microactuator's mechanical properties and is applied at the reference point to the microactuator servo subsystem. A microactuator variable input limit to prevent over-accumulation of internal states may be dynamically determined based on the difference between a signal corresponding to the maximum physical stroke of the microactuator and an estimated motion of the microactuator. Either configuration of servo system automatically ensures that all the internal states of the microactuator controller will not over-react and cause excessive overshoot, sluggish response, and/or saturation.

摘要翻译： 用于防止内部状态过度累积的微致动器参考极限可以基于微致动器的机械特性来设定，并且在参考点处被施加到微致动器伺服子系统。 可以基于与微型致动器的最大物理冲程相对应的信号与微型致动器的估计运动之间的差异来动态地确定用于防止内部状态的过度累积的微致动器可变输入限制。 伺服系统的任一配置自动确保微致动器控制器的所有内部状态不会过度反应，并引起过大的过冲，缓慢的响应和/或饱和度。

公开(公告)号：US07158325B1

公开(公告)日：2007-01-02

申请号：US10984559

申请日：2004-11-08

申请人： Xiaoping Hu ,  Yu Sun ,  Lin Guo ,  Don Brunnett

发明人： Xiaoping Hu ,  Yu Sun ,  Lin Guo ,  Don Brunnett

IPC分类号： G11B15/18

CPC分类号： G11B5/59627 ,  G11B5/6076

摘要： A disk drive detects head touchdown based on a magnitude of a position error signal at a discrete frequency. The discrete frequency is one-half the disk rotation frequency or an integral multiple of the disk rotation frequency. The head is heated by turning on a heater at the discrete frequency, thereby injecting bias into a servo system that increases the PES magnitude. In addition, the servo system has a first transfer function for tracking the head during read and write operations and a second transfer function for tracking the head during head touchdown detection. The second transfer function has smaller vibration rejection than the first transfer function so that the disk drive is less sensitive to vibration during read and write operations than during head touchdown detection.

摘要翻译： 磁盘驱动器基于离散频率处的位置误差信号的大小来检测磁头触地。 离散频率是磁盘旋转频率的一半或磁盘旋转频率的整数倍。 通过以离散频率打开加热器来加热头部，从而将偏压注入到增加PES量值的伺服系统中。 此外，伺服系统具有用于在读取和写入操作期间跟踪头部的第一传递功能，以及用于在头部触地检测期间跟踪头部的第二传递功能。 第二传递函数具有比第一传递函数更小的振动抑制，使得磁盘驱动器在读取和写入操作期间比在头部触地检测期间对振动较不敏感。

公开(公告)号：US07145745B1

公开(公告)日：2006-12-05

申请号：US10932717

申请日：2004-09-02

申请人： Stan Shepherd ,  Jason Adler ,  Lin Guo ,  Xiaoping Hu ,  Yu Sun

发明人： Stan Shepherd ,  Jason Adler ,  Lin Guo ,  Xiaoping Hu ,  Yu Sun

IPC分类号： G11B5/596

CPC分类号： G11B5/5552

摘要： Methods of compensating for repeatable runout in a disk drive are provided. The disk drive includes a data storage disk, a transducer adjacent to the disk, a primary actuator for positioning the transducer over a first range of movement, and a secondary actuator for positioning the transducer over a second range of movement that is less than the first range of movement. Estimates are made of the position of the secondary actuator in the second range of movement. Data is read from the disk via the transducer. A position error signal is determined based on the read data. Positioning of the transducer by the primary actuator is controlled based on the estimated position of the secondary actuator in the second range of movement and based on the position error signal to compensate for repeatable runout.

摘要翻译： 提供补偿磁盘驱动器中可重复跳动的方法。 磁盘驱动器包括数据存储盘，与盘相邻的换能器，用于在第一移动范围上定位换能器的主致动器，以及辅助致动器，用于将传感器定位在比第一移动范围小的第二移动范围 运动范围 在第二运动范围内由次级致动器的位置进行估计。 通过传感器从磁盘读取数据。 基于读取的数据确定位置误差信号。 基于在第二移动范围内的辅助致动器的估计位置并且基于位置误差信号来控制由主致动器定位换能器，以补偿可重复的跳动。

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。

公开(公告)号：US07116513B1

公开(公告)日：2006-10-03

申请号：US10999552

申请日：2004-11-30

申请人： Yu Sun ,  Lin Guo ,  Xiaoping Hu

发明人： Yu Sun ,  Lin Guo ,  Xiaoping Hu

IPC分类号： G11B5/596

CPC分类号： G11B5/5582 ,  G11B19/04

摘要： A disk drive includes a transducer and a rotatable disk, which includes a plurality of tracks. A vibration state of the transducer relative to the disk is determined. The transducer is positioned relative one of the tracks based on a compensation scheme that varies based on the determination of the vibration state. The compensation scheme may be varied by selecting among output of two or more compensators, based on the determined of the vibration state of the transducer, to control positioning of the transducer. The compensation scheme may alternatively, or additionally, be varied by varying a contribution from a vibration state actuator compensator to the control of positioning of the transducer. The vibration state actuator compensator is configured to improve transducer track following while the transducer is subjected to vibration.

摘要翻译： 磁盘驱动器包括换能器和可旋转盘，其包括多个轨道。 确定换能器相对于盘的振动状态。 基于基于振动状态的确定而变化的补偿方案，换能器相对于轨道定位。 可以通过基于确定的换能器的振动状态来选择两个或多个补偿器的输出来改变补偿方案，以控制换能器的定位。 可以通过改变从振动状态致动器补偿器对转换器的定位的控制的贡献来替代或另外地改变补偿方案。 振动状态致动器补偿器配置成在传感器经受振动时改善传感器轨迹跟随。

公开(公告)号：US06975482B1

公开(公告)日：2005-12-13

申请号：US10794579

申请日：2004-03-05

申请人： Lin Guo ,  Xiaoping Hu

发明人： Lin Guo ,  Xiaoping Hu

IPC分类号： G11B5/55

CPC分类号： G11B5/5552

摘要： An actuator control system and method for a hard disk drive comprising first and second actuators that support a head relative to a disk is disclosed. The actuator control system comprises a first stage, a second stage, a memory device, and a maximum stroke calculator. The first stage displaces the first actuator relative to the disk. The second stage displaces the second actuator relative to the first actuator. The memory device stores at least one data value indicative of a predicted response of the second stage. The maximum stroke calculator generates a predicted maximum stroke based on the at least one data value stored by the memory device. The second stage is deactivated when the disk drive initiates a seek operation. The second stage is reactivated based on a comparison of the predicted maximum stroke with a position of the second actuator.

摘要翻译： 公开了一种用于硬盘驱动器的致动器控制系统和方法，其包括相对于盘支撑头部的第一和第二致动器。 致动器控制系统包括第一级，第二级，存储器件和最大冲程计算器。 第一阶段相对于盘移动第一致动器。 第二阶段使第二致动器相对于第一致动器移位。 存储装置存储指示第二级的预测响应的至少一个数据值。 最大行程计算器基于由存储装置存储的至少一个数据值生成预测的最大行程。 当磁盘驱动器启动搜索操作时，第二阶段被停用。 基于预测的最大行程与第二致动器的位置的比较来重新激活第二阶段。