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11 条记录 (耗时 0.013 秒)

    Adaptative control technique for a dynamic system
    3.
    发明公开
    Adaptative control technique for a dynamic system 失效
    Adaptors Regelungsverfahrenfürein动力系统。

    公开(公告)号：EP0249020A2

    公开(公告)日：1987-12-16

    申请号：EP87106183.4

    申请日：1987-04-28

    申请人： International Business Machines Corporation

    发明人： Stich, Michael Charles ,  Ottesen, Hjalmar ,  Resman, John Boris ,  Anderson, Todd Barry

    IPC分类号： G11B5/55 ,  G11B21/02 ,  G05B13/00

    CPC分类号： G11B21/106 ,  G05D3/1454 ,  G11B21/085

    摘要： A controller for a voice coil motor driven disk file actuator (10) is described. The device has an online adjustable gain characteristic for controlling movement of the actuator assembly and an estimator (56) that estimates actuator velocity and bias. Forward gain is estimated from position and coil current measurements and compared with a nominal value to create an error signal used to adjust the controller and estimator gain characteristics. The control technique allows changes in the open loop system without changing the closed loop performance. By monitoring loop gain it is possible to alter compensator gains to maintain a constant closed loop performance.

    摘要翻译： 描述了一种用于音圈马达驱动盘文件驱动器（10）的控制器。 该装置具有用于控制致动器组件的运动的在线可调节增益特性和估计致动器速度和偏压的估计器（56）。 从位置和线圈电流测量估计正向增益，并与标称值进行比较，以产生用于调整控制器和估计器增益特性的误差信号。 控制技术允许开环系统的改变，而不改变闭环性能。 通过监控回路增益，可以改变补偿器增益以保持恒定的闭环性能。

    Position control device for use in a data storage device
    4.
    发明公开
    Position control device for use in a data storage device 失效
    位置控制装置，用于数据存储装置

    公开(公告)号：EP0094495A3

    公开(公告)日：1986-02-05

    申请号：EP83102954

    申请日：1983-03-25

    申请人： International Business Machines Corporation

    发明人： Anderson, Todd Barry ,  Glaser, Thomas William ,  Neesz, John Jacob

    IPC分类号： G11B05/58 ,  G11B05/55 ,  G11B21/10

    CPC分类号： G11B5/5547

    摘要： A sector servo seek control samples each sector to obtain sector time, the track identification within a sequence of track types and a position error signal (PES) for a track location to track location seek. The device during each sector determines the actual transducer track location and the next sector projected track location with respect to the sequence of track types. The projected track location is corrected using the error signal (PES) to find the actual location, but if a sector signal is missing or erroneous, the projected location is used as the actual location, permitting a composite correction to be made when a correct sector signal is obtained. The seek time is minimized by using maximum acceleration followed by maximum deceleration while not exceeding a velocity value that would cause the device to overshoot the target track using full deceleration.

    Method and apparatus for phase modulated servo positioning in a direct access storage device
    5.
    发明公开
    Method and apparatus for phase modulated servo positioning in a direct access storage device 失效
    用于定位的方法和设备是指在存储单元中的相位调制用的随机接入的。

    公开(公告)号：EP0645764A2

    公开(公告)日：1995-03-29

    申请号：EP94480084.6

    申请日：1994-09-06

    申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

    发明人： Anderson, Todd Barry ,  Hagen, Mark David

    IPC分类号： G11B5/55 ,  G11B21/10

    CPC分类号： G11B5/59622 ,  G11B5/59683 ,  G11B5/59688

    摘要： A phase modulated servo method and apparatus are provided for use in a disk file. The disk file includes at least one disk mounted for rotation about an axis and the disk has at least one disk surface for storing data. At a predefined location of the disk surface a series of servo tracks of a predetermined high gain servo pattern are written. The predetermined high gain servo pattern includes 360° phase difference information within each data cylinder. The servo tracks are detected for identifying servo phase information.

    摘要翻译： 提供了用于在一个磁盘文件中使用的相位调制伺服方法和设备。 磁盘文件包括安装在至少一个磁盘，用于绕轴线在与该盘具有用于存储数据的至少一个磁盘表面。 在盘的预定位置表面的一系列的预定高增益伺服图案的伺服磁道的写入。 该预定高增益伺服图案包括在各个数据柱面之内的360°相位差信息。 以识别伺服相位信息来检测伺服磁道。

    Method and apparatus for reducing track switch latency in a disk drive
    10.
    发明公开
    Method and apparatus for reducing track switch latency in a disk drive 失效
    Verfahren und Vorrichtung zur Reduzierung der Spurverstellungslatenz in einem Plattenspeicher。

    公开(公告)号：EP0540114A1

    公开(公告)日：1993-05-05

    申请号：EP92203308.9

    申请日：1992-10-28

    申请人： International Business Machines Corporation

    发明人： Anderson, Clark Alan ,  Anderson, Todd Barry ,  Cadloni. Gerald Lawrence ,  Cunningham, Earl Albert ,  Hicken, Michael Scott ,  Reno, Daniel Donald ,  Stephenson, John Jeffrey

    IPC分类号： G11B5/55

    CPC分类号： G11B19/20 ,  G11B5/5547 ,  G11B5/59616

    摘要： In a ultra high density, multiple-disk drive, track switches within a cylinder of tracks as well as track switches to tracks on other cylinders both require a movement of the head stack actuator. Track switching latency in such a disk drive is reduced by overlapping pre-movement portions of the track switching process with the data transfer operation of the currently active recording head. In addition, post-movement portions of the track switching process are overlapped with the movement of the heads so that the next selected read/write head may begin a data transfer operation immediately upon arrival at the next track. Further, the pre-movement and post-movement portions of the track-switch process may be overlapped with low displacement movement of the read/write heads relative to the currently active track or the next track.

    摘要翻译： 在超高密度的多磁盘驱动器中，轨道气缸内的轨道开关以及轨道开关到其它气缸上的轨道都需要磁头组件执行机构的移动。 通过与当前活动的记录头的数据传送操作重叠轨道切换过程的预移动部分来减少这种磁盘驱动器中的跟踪切换等待时间。 此外，轨道切换处理的后移动部分与磁头的移动重叠，使得下一个所选择的读/写头可以在到达下一个轨道时立即开始数据传送操作。 此外，轨道切换过程的预运动和后运动部分可以与读/写头相对于当前活动的轨道或下一个轨道的低位移移动重叠。