公开(公告)号：WO1998022941A1

公开(公告)日：1998-05-28

申请号：PCT/US1997019007

申请日：1997-10-10

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  McMURTREY, David, S.

IPC: G11B05/596

CPC classification number: G11B5/59605

Abstract: A disk drive (10) with a disk (12) and an actuator assembly (16) on which a communication device (14) is mounted for communication with the disk (12). Position information read from the disk is processed through a channel (21) that generates a digital position error signal by a first signal converter (41). Based on the digital position error signal, a controller (44) determines whether realignment of the communication device (14) with the disk (12) is required. When realignment is required, a digital position control signal is generated by the controller and is converted to an analog position control signal by a second signal converter (43). The first and second signal converters share DAC (42) as common circuitry. Operation of the DAC (42) is switched between the first and second signal converters by a switch (48) by controller (44). Based on the analog position control signal, a servo system (46) causes the actuator assembly (16) to reposition the communication device (14) for fine adjustment to maintain proper alignment with the disk (12).

Abstract translation: 具有盘（12）和致动器组件（16）的盘驱动器（10），其上安装有与盘（12）通信的通信装置（14）。 通过由第一信号转换器（41）产生数字位置误差信号的通道（21）来处理从盘读取的位置信息。 基于数字位置误差信号，控制器（44）确定需要通信设备（14）与盘（12）的重新对准。 当需要重新对准时，数字位置控制信号由控制器产生，并由第二信号转换器（43）转换成模拟位置控制信号。 第一和第二信号转换器共享DAC（42）作为公共电路。 通过控制器（44）通过开关（48）在DAC（42）的操作在第一和第二信号转换器之间切换。 基于模拟位置控制信号，伺服系统（46）使得致动器组件（16）重新定位通信设备（14）以进行微调，以保持与盘（12）的适当对准。

公开(公告)号：WO1998010414A1

公开(公告)日：1998-03-12

申请号：PCT/US1997014570

申请日：1997-08-20

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  HO, Hai ,  DOAN, Toan

IPC: G11B05/596

CPC classification number: G11B21/085 ,  G11B5/59633 ,  G11B5/59655 ,  G11B19/28 ,  G11B21/10 ,  G11B21/106 ,  G11B23/36

Abstract: A servo sector allocation scheme for a disk based data storage system is disclosed that realizes an increased servo sampling rate without an associated increase in overhead. The scheme involves increasing the number of servo sectors on a subset (preferable one) of the disk surfaces in the disk drive while reducing the number of servo sectors on all remaining disk surfaces. A master servo feedback signal is then derived from the surface(s) with an increased number of servo sectors and provided to a master PES controller (44). A slave servo feedback signal is derived from the surface that is being accessed and is provided to a slave PES controller (46). The master PES control signal (Xm) is then combined with the slave PES control signal (Xs) to form a single position error signal (Xe) that is used to control the positioning of a transducer (58).

Abstract translation: 公开了一种用于基于盘的数据存储系统的伺服扇区分配方案，其实现了增加的伺服采样速率，而没有相应的开销增加。 该方案包括增加磁盘驱动器中磁盘表面的子集（优选一个）上的伺服扇区的数量，同时减少所有剩余磁盘表面上的伺服扇区的数量。 然后，从伺服扇区数量增加的表面导出主伺服反馈信号，并提供给主控制器（44）。 从伺服反馈信号从被访问的表面导出并提供给从属PES控制器（46）。 然后，将主PES控制信号（Xm）与从PES控制信号（Xs）组合以形成用于控制换能器（58）的定位的单个位置误差信号（Xe）。

公开(公告)号：WO1997045832A1

公开(公告)日：1997-12-04

申请号：PCT/US1997002005

申请日：1997-02-07

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  ELLIOTT, Mark, L. ,  GALLOWAY, Paul, A.

IPC: G11B05/596

CPC classification number: G11B5/5526 ,  G11B5/59688

Abstract: A servo system (10, 38) positions a transducer (20) over a disc surface in a disc drive system. Disc surfaces in the drive each have a plurality of spaced servo samples (32, 34) recorded thereon. The servo samples (32, 34) on at least two of the disc surfaces (0, 1) are recorded in skewed relation to one another. A plurality of transducers (20) are provided and one transducer (20) is associated with each one of the plurality of disc surfaces (0, 1). An actuator arm assembly (18) is coupled to the transducers (20) to move the transducers (20) relative to the disc surfaces. A servo control system is coupled to the actuator arm assembly (18) to control position of the actuator arm assembly (18). The servo control system includes a reader (24) configured to read servo samples (32, 34) from at least two disc surfaces (0, 1) such that at least two servo samples (32, 34) are read within one servo time period (t1).

Abstract translation: 伺服系统（10,38）将换能器（20）定位在盘驱动系统中的盘表面上。 驱动器中的盘表面具有记录在其上的多个间隔的伺服样本（32,34）。 在至少两个盘表面（0,1）上的伺服样本（32,34）以彼此偏斜的关系记录。 提供多个换能器（20），并且一个换能器（20）与多个盘表面（0,1）中的每一个相关联。 致动器臂组件（18）联接到换能器（20）以相对于盘表面移动换能器（20）。 伺服控制系统联接到致动器臂组件（18）以控制致动器臂组件（18）的位置。 伺服控制系统包括：读取器（24），被配置为从至少两个盘表面（0,1）读取伺服样本（32,34），使得在一个伺服时间周期内读取至少两个伺服样本（32,34） （T1）。

公开(公告)号：WO1997043758A1

公开(公告)日：1997-11-20

申请号：PCT/IB1997000720

申请日：1997-05-15

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  HAMPSHIRE, Randall, D.

IPC: G11B05/596

CPC classification number: G11B5/59655

Abstract: Apparatus and method for providing a nominally linearized position error signal in a disc drive (100). First and second position error signals (202, 222) are generated from selected combinations of servo burst signals obtained as a head (118) passes over servo position fields (186, 188, 190, 192) associated with a selected track (182). A third position error signal (344) is generated as a weighted sum of the first and second position error signals (202, 222) and used to control the amount of current applied to an actuator coil (126) in order to position the head (118) relative to the selected track (182).

Abstract translation: 用于在盘驱动器（100）中提供标称线性化的位置误差信号的装置和方法。 从作为头（118）获得的伺服脉冲串信号的选定组合产生第一和第二位置误差信号（202,222），其经过与选定轨迹（182）相关联的伺服位置场（186,188,190,192）。 产生第三位置误差信号（344）作为第一和第二位置误差信号（202,222）的加权和，并且用于控制施加到致动器线圈（126）的电流量，以便将头部 118）相对于所选择的轨道（182）。

公开(公告)号：WO1997007502A1

公开(公告)日：1997-02-27

申请号：PCT/US1996011095

申请日：1996-06-28

Applicant: QUANTUM CORPORATION

Inventor： QUANTUM CORPORATION ,  WILLIAMS, Stephen, P. ,  RIENER, Timothy, A.

IPC: G11B05/596

CPC classification number: G11B21/21 ,  G11B5/4833

Abstract: An improved suspension for supporting a read/write head adjacent to a relatively moving storage medium in a disk drive is disclosed. The suspension includes a curved loadbeam (36) or a curved flexure (45) that reduces the magnitude of the gain in the first torsion resonant mode of oscillation when the Z-height of the loadbeam is configured for minimum sensitivity of the first torsion gain as a function of the loadbeam Z-height, thereby providing a suspension capable of improved head position servo performance and improved manufacturing and assembly yields.

Abstract translation: 公开了一种用于支持与磁盘驱动器中相对移动的存储介质相邻的读/写头的改进的悬架。 悬架包括弯曲载荷梁（36）或弯曲挠曲件（45），当弯曲载荷梁（36）或弯曲挠曲件（45）减小第一扭转共振振荡模式时的增益幅度，当载荷梁的Z高度被配置成以第一扭转增益的最小灵敏度 负载梁Z高度的功能，从而提供能够改善头位置伺服性能并提高制造和组装产量的悬架。

公开(公告)号：WO1996008816A1

公开(公告)日：1996-03-21

申请号：PCT/US1995011535

申请日：1995-09-12

Applicant: ANALOG DEVICES, INC.

Inventor： ANALOG DEVICES, INC. ,  STEYAERT, Michel ,  DEHAENE, Wim ,  CRANINCKX, Jan ,  WALSH, Mairtin ,  REAL, Peter

IPC: G11B05/596

CPC classification number: G11B5/59655

Abstract: A servo system for controlling the position of a read/write head in a disk drive is provided. The servo system includes two input terminals for sequentially receiving a plurality of input signal AC voltage bursts of a burst pattern, wherein the input signal bursts include positional information of the head. Demodulation circuitry, coupled to the input terminals, sequentially demodulates each input signal burst and provides a demodulated signal for each burst. The demodulation circuitry includes translation circuitry, coupled to the input, for sequentially translating each input voltage burst to a translated current. A rectifier circuit, coupled to the translation circuitry, including an absolute value circuit and a current mirror circuit, sequentially rectifies each translated current and produces a driving signal. An integrator, coupled to the rectifier circuit, sequentially integrates each driving signal. The integrator includes an integration capacitor which is sequentially charged by each driving signal. In the preferred embodiment, the current mirror circuit includes an operational amplifier and a gain circuit. Also in the prefered embodiment, the voltage to current translation circuit includes a folded cascode circuit arrangement of a plurality of CMOS transistors.

Abstract translation: 提供了一种用于控制磁盘驱动器中读/写磁头的位置的伺服系统。 伺服系统包括两个输入端子，用于顺序地接收突发模式的多个输入信号AC电压脉冲串，其中输入信号脉冲串包括磁头的位置信息。 耦合到输入端的解调电路顺序地解调每个输入信号脉冲串，并为每个脉冲串提供解调信号。 解调电路包括耦合到输入的平移电路，用于将每个输入电压脉冲串顺序地转换成转换的电流。 耦合到包括绝对值电路和电流镜电路的平移电路的整流器电路顺序地对每个转换的电流进行整流并产生驱动信号。 耦合到整流电路的积分器顺序地对每个驱动信号进行积分。 积分器包括由每个驱动信号依次充电的积分电容器。 在优选实施例中，电流镜电路包括运算放大器和增益电路。 同样在优选实施例中，电压 - 电流转换电路包括多个CMOS晶体管的折叠共源共栅电路装置。

公开(公告)号：WO1995027282A1

公开(公告)日：1995-10-12

申请号：PCT/US1995004140

申请日：1995-03-31

Applicant: POLAROID CORPORATION

Inventor： POLAROID CORPORATION ,  SULLIVAN, Paul, F.

IPC: G11B05/596

CPC classification number: G11B7/0901 ,  G11B21/085

Abstract: An adaptive predictor for use with a control system to predict error contributions due to harmonic distortion in an error signal such that the prediction signal may be fed back and added to the error signal to compensate for the harmonic distortion. The adaptive predictor takes the error signal representative of misposition error and performs a discrete Fourier analysis to determine contributions due to individual harmonics. It then adjusts the results and tallies a running total thereby adapting to a mechanical system in which it is contained. The running total is combined with a carrier signal which is clocked to produce a predictive signal representing harmonic distortion at a given time. The predictive signal is then added back with the original error signal to produce a harmonic distortion compensated signal.

Abstract translation: 一种与控制系统一起用于预测由于误差信号中的谐波失真引起的误差贡献的自适应预测器，使得预测信号可被反馈并加到误差信号上以补偿谐波失真。 自适应预测器采用代表错位误差的误差信号，并进行离散傅里叶分析，以确定由于各个谐波引起的贡献。 然后，它调整结果并计算运行总量，从而适应其中包含的机械系统。 运行总计与载波信号组合，载波信号被计时以产生在给定时间表示谐波失真的预测信号。 然后将预测信号与原始误差信号相加，以产生谐波失真补偿信号。

公开(公告)号：WO1994024664A1

公开(公告)日：1994-10-27

申请号：PCT/US1994004268

申请日：1994-04-19

Applicant: HUTCHINSON TECHNOLOGY INCORPORATED

Inventor： HUTCHINSON TECHNOLOGY INCORPORATED ,  JURGENSON, Ryan, A.

IPC: G11B05/596

CPC classification number: G11B5/4886 ,  G11B5/4833 ,  G11B5/54 ,  G11B5/5521

Abstract: A magnetic head suspension for attachment to a rigid head arm comprises a spring load beam element and a flexure element. The load beam element (14) is formed from material generally having a first thickness. The load beam has a central region (38, 50, 60, 70) having a second thickness, less thick than the first thickness, formed in a spring region (40). The second thickness may be formed by the partial (50, 60) or complete (38, 70) removal of load beam material in the central region. First thickness legs (40, 42) bounding the central region (38) may be formed to be of widest width (W3) at the location proximal to the rigid section of the load beam, and of narrowest width (W4) between the two ends of each leg, thus providing good lateral stiffness and spring rate characteristics.

Abstract translation: 用于附接到刚性头臂的磁头悬架包括弹簧加载梁元件和挠曲元件。 负载梁元件（14）由通常具有第一厚度的材料形成。 负载梁具有形成在弹簧区域（40）中的具有比第一厚度更薄的第二厚度的中心区域（38,50,60,70）。 第二厚度可以通过部分（50,60）或完全（38,70）去除中心区域中的负载梁材料而形成。 包围中心区域（38）的第一厚度支腿（40,42）可以在靠近负载梁的刚性部分的位置处形成为最宽的宽度（W3），并且两端之间的最窄宽度（W4） 从而提供良好的横向刚度和弹簧刚度特性。

公开(公告)号：WO1993010525A1

公开(公告)日：1993-05-27

申请号：PCT/US1992010246

申请日：1992-11-20

Applicant: MICROPOLIS CORPORATION

Inventor： MICROPOLIS CORPORATION ,  PARKEN, Alec ,  HAMILTON, Robert +di

IPC: G11B05/596

CPC classification number: G11B5/5534

Abstract: A method and apparatus for optimizing positional data for use in connection with a hard disk type magnetic memory storage device. The apparatus includes a pattern encoded on a dedicated track (58) of the hard disk including first (44) and second set (46) of signals repetitively encoded in a series of cells (50). The method includes the steps of periodically accessing the dedicated track with the read/write head and calculating amplitude and phase information for a trigonometric instantaneous correction function. Amplitude and phase information are subsequently stored and the positional signal for the read/write head is continually modified by a most recent determination of the correction function. The apparatus of the present invention includes circuitry for distinguishing between sub-elements of the repetitive pattern on the hard disk.

Abstract translation: 一种用于优化与硬盘式磁存储装置相关联使用的位置数据的方法和装置。 该装置包括编码在硬盘的专用轨道（58）上的图案，包括在一系列单元（50）中重复编码的信号的第一组（44）和第二组（46）。 该方法包括以下步骤：利用读/写头定时访问专用磁道，并计算三角瞬时校正功能的幅度和相位信息。 随后存储幅度和相位信息，并且读/写头的位置信号通过校正功能的最新确定而不断地修改。 本发明的装置包括用于区分硬盘上的重复图案的子元素的电路。

公开(公告)号：WO1992009077A1

公开(公告)日：1992-05-29

申请号：PCT/US1991007836

申请日：1991-10-22

Applicant: CONNER PERIPHERALS, INC.

Inventor： CONNER PERIPHERALS, INC. ,  SQUIRES, John, P. ,  BAGNELL, Glade, N. ,  SANDER, Charles, M.

IPC: G11B05/596

CPC classification number: G06F3/0601 ,  G06F2003/0692 ,  G11B5/4813 ,  G11B5/5521 ,  Y10S360/902 ,  Y10S360/903

Abstract: A multiple actuator disk drive (20) utilizes multiple heads (46a-j, 47a-j) associated with respective ones of multiple actuators (341, 342) to read data from and write data to all tracks on the surface of a disk. The positioning of each head by the respective actuators is controlled by embedded servo-information recorded in the data tracks. The data tracks have a density of greater than 2000 tracks per inch. Utilizing two actuators provides access times which are reduced with respect to the access times provided by disk drives having a single actuator and an increased data transfer rate.

Abstract translation: 多个致动器盘驱动器（20）利用与多个致动器（341,342）中的相应致动器相关联的多个头部（46a-j，47a-j）从盘表面上的所有轨迹读取数据和写入数据。 各个致动器的每个头部的定位由记录在数据轨道中的嵌入式伺服信息控制。 数据轨道的密度大于2000个轨道/英寸。 利用两个致动器提供了相对于具有单个致动器的磁盘驱动器提供的访问时间和增加的数据传输速率而减少的访问时间。