Method and device for dynamic system control
    11.
    发明授权
    Method and device for dynamic system control 失效
    用于动态系统控制的方法和装置

    公开(公告)号:US6029095A

    公开(公告)日:2000-02-22

    申请号:US947047

    申请日:1997-10-08

    摘要: A method of controlling automatic state returns relates to a dynamic system coupled to an automatic control operating in a discrete negative feedback mode. The method includes a phase for defining a controller, and a phase for operating the system. The defining phase is realized in an open-loop learning phase which includes a step of reading states in which a system may be situated, and a step of generating commands for returning the system to an ideal state. When the commands generating step takes place, the method supplies, for each state, a sequence of discrete commands which are determined by imposing a constraint intended to reduce the error relative to that state below a predetermined threshold.

    摘要翻译: 控制自动状态返回的方法涉及耦合到以离散负反馈模式操作的自动控制的动态系统。 该方法包括用于定义控制器的阶段和用于操作系统的阶段。 定义阶段在开环学习阶段实现,该阶段包括读取系统可能位于其中的状态的步骤,以及产生使系统返回到理想状态的命令的步骤。 当命令生成步骤发生时,该方法为每个状态提供离散命令序列,这些离散命令序列通过强制旨在减少相对于低于预定阈值的状态的误差来确定。

    Method and apparatus for developing position error curves for
magneto-resistive heads
    12.
    发明授权
    Method and apparatus for developing position error curves for magneto-resistive heads 失效
    用于开发磁阻头的位置误差曲线的方法和装置

    公开(公告)号:US6005740A

    公开(公告)日:1999-12-21

    申请号:US942131

    申请日:1997-10-01

    申请人: Bruce Liikanen

    发明人: Bruce Liikanen

    摘要: A disk having a servo burst pattern used for generating PES curves for MR heads is disclosed. The disk has a plurality of tracks and each of the tracks has a track width. The servo burst pattern includes a first servo burst and a second servo burst forming a first servo burst pair; and, a third servo burst and a fourth servo burst forming a second servo burst pair. The second servo burst pair is circumferentially adjacent to the first servo burst pair. The third servo burst spans a distance of (TW/2+K(TW/2)), while the fourth servo burst spans a distance of ((TW/2+(2-K)(TW/2)). In the above equations, TW equals the track width and 0

    摘要翻译: 公开了一种具有用于产生MR磁头的PES曲线的伺服脉冲串模式的磁盘。 盘具有多个轨道,并且每个轨道具有轨道宽度。 伺服脉冲串模式包括形成第一伺服脉冲串对的第一伺服脉冲串和第二伺服脉冲串; 以及形成第二伺服脉冲串对的第三伺服脉冲串和第四伺服脉冲串。 第二伺服脉冲串对与第一伺服脉冲串对周向相邻。 第三个伺服脉冲串跨过(TW / 2 + K(TW / 2))的距离,而第四个伺服脉冲串的距离为((TW / 2 +(2-K)(TW / 2))) 此外,还公开了一种生成包括磁头驱动器的磁盘驱动器的PES曲线的方法以及其上写有伺服脉冲串图形的磁盘,该方法包括: (1)从磁盘读取伺服脉冲串模式的步骤,伺服脉冲串模式包括在第一点相交的第一和第二伺服脉冲串,第一和第二伺服脉冲串图形具有彼此相等的宽度,第三 以及第四伺服脉冲串图形,其在径向位于第一点与另一轨道中心线之间的第二点处彼此相交,第三伺服脉冲串图案的宽度等于K(TW / 2),第四伺服脉冲串图形具有宽度 等于(2-K)(TW / 2),其中0

    Method of estimating gain of servo control system
    13.
    发明授权
    Method of estimating gain of servo control system 失效
    伺服控制系统增益估算方法

    公开(公告)号:US5969494A

    公开(公告)日:1999-10-19

    申请号:US934516

    申请日:1997-09-22

    申请人: Chang-Ik Kang

    发明人: Chang-Ik Kang

    摘要: A method of estimating the gain of a servo control system including an actuator, in which input data supplied to the actuator and the actuator's position data are applied to a gain estimate formula in a closed loop discrete value system for controlling the actuator, so as to estimate the gain of the servo control system.

    摘要翻译: 一种估计包括致动器的伺服控制系统的增益的方法,其中提供给致动器的输入数据和致动器的位置数据被应用于用于控制致动器的闭环离散值系统中的增益估计公式,以便 估计伺服控制系统的增益。

    Positioning adaptive control method and positioning device as well as
information storage device
    14.
    发明授权
    Positioning adaptive control method and positioning device as well as information storage device 失效
    定位自适应控制方法和定位装置以及信息存储装置

    公开(公告)号:US5936792A

    公开(公告)日:1999-08-10

    申请号:US677546

    申请日:1996-07-18

    摘要: A positioning adaptive control method and positioning device which allow rapid positioning of a head by speed-controlling a seek operation in an information storage device such as a magnetic disk unit. The seek operation moves the head to a vicinity of a target track and a following operation causes the head to accurately follow a position on the target track when the head is positioned in the vicinity of the target track. These operations are controlled based on data recorded in sectors formed on a recording plane of a disk. A variable gain of an acceleration feed forward signal is controlled sequentially by an adaptive control rule so that a deviation signal between a target speed and an actual speed of the head is reduced when the speed of the head is shifted from an acceleration or constant speed state to a deceleration state under speed control. The variable gain of the acceleration feed forward is used per each sampling for the adaptive control rule and a square value of the speed deviation signal is minimized.

    摘要翻译: 一种定位自适应控制方法和定位装置,其允许通过在诸如磁盘单元的信息存储装置中对搜索操作进行速度控制来快速定位头部。 寻道操作将磁头移动到目标轨道附近,并且当头部位于目标轨道附近时,随后的操作使头部精确地跟随目标轨道上的位置。 这些操作基于记录在形成在盘的记录平面上的扇区中的数据来控制。 通过自适应控制规则顺序地控制加速度前馈信号的可变增益,使得当头的速度从加速度或恒定速度状态偏移时,目标速度和头部的实际速度之间的偏差信号减小 到速度控制下的减速状态。 对于自适应控制规则,每个采样使用加速度前馈的可变增益,并且将速度偏差信号的平方值最小化。

    Digital servo control system including sample integrity tester for
reducing effects of spurious sampled position values
    15.
    发明授权
    Digital servo control system including sample integrity tester for reducing effects of spurious sampled position values 失效
    数字伺服控制系统包括采样完整性测试仪,用于减少杂散采样位置值的影响

    公开(公告)号:US5914830A

    公开(公告)日:1999-06-22

    申请号:US978489

    申请日:1997-11-25

    摘要: In a digital servo control system especially suitable for use in disk drives, a sample integrity tester is provided. Sample measurements, indicating the position of a disk drive's read/write head relative to tracks of information on a recording medium, are subject to error due to noise. The sample integrity tester 2410, 2420, 2430 effectively filters out noise-corrupted measurements and thus prevents clearly erroneous measurements from contaminating calculations performed within the servo controller's control loop. If a measured position signal falls outside a given window (indicating a possible spurious position value has been read), an observer's predicted value is used rather than the spurious value. Using the predicted value allows the loop to operate in a "freewheel" (open-loop) mode. A preferred implementation of the sample integrity tester involves a coarse window that is static, and a fine window that changes dynamically based on an effort signal.

    摘要翻译: 在特别适用于磁盘驱动器的数字伺服控制系统中,提供了一个样本完整性测试器。 表示磁盘驱动器的读/写头相对于记录介质上的信息的轨迹的位置的样本测量将由于噪声而出现错误。 样品完整性测试器2410,2420,2430有效地滤除噪声损坏的测量值,从而防止在伺服控制器的控制回路内执行污染的清楚的错误测量。 如果测量的位置信号落在给定窗口之外(指示可能的寄生位置值已被读取),则使用观察者的预测值而不是伪造值。 使用预测值可以使循环以“续流”(开环)模式运行。 样本完整性测试器的优选实施方案涉及静态的粗略窗口,以及基于努力信号而动态改变的精细窗口。

    Leading surface slider microactuator
    16.
    发明授权
    Leading surface slider microactuator 失效
    导向滑块微致动器

    公开(公告)号:US5898541A

    公开(公告)日:1999-04-27

    申请号:US852087

    申请日:1997-05-07

    摘要: A slider for attachment to a flexure of a disc drive system includes a slider body, a transducing head formed on the trailing edge of the slider body, and a microactuator formed on the leading edge of the slider body. The microactuator engages the flexure to rotate the transducing head in response to control signals applied to the microactuator. The slider is applicable to achieve fine positioning of the transducing head in a disc drive having an actuator arm supporting the flexure and a motor operable to move the actuator relative to a disc to coarsely position the transducing head. The microactuator and the transducing head may be formed by thin film deposition.

    摘要翻译: 用于附接到盘驱动系统的挠曲件的滑块包括滑块体,形成在滑块体的后缘上的换能头和形成在滑块体的前缘上的微型致动器。 响应于施加到微致动器的控制信号,微型致动器接合挠曲件以使换能头旋转。 该滑动器适用于实现传感头在具有支撑挠曲件的致动器臂的盘驱动器中的精细定位,以及可操作以相对于盘移动致动器的马达以粗略地定位换能头。 微致动器和换能头可以通过薄膜沉积形成。

    Actuator bias prediction using lookup-table hysteresis modeling
    17.
    发明授权
    Actuator bias prediction using lookup-table hysteresis modeling 失效
    使用查找表滞后建模的执行器偏差预测

    公开(公告)号:US5872674A

    公开(公告)日:1999-02-16

    申请号:US846545

    申请日:1997-04-30

    申请人: Kyle K. Eddy

    发明人: Kyle K. Eddy

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

    摘要: An actuator system for positioning a transducing head on an actuator arm over a selected track of a rotatable disc having a plurality of concentric tracks is disclosed. The actuator arm includes a motor responsive to an actuator signal and a bias signal to move the head with respect to the tracks. The actuator signal is applied to the motor to move the head between tracks on the disc. After the head has been moved between tracks, the bias signal is applied to the motor to center the head over the selected track. A lookup table is provided to store predicted bias values in locations addressable by seek direction, previous seek direction, seek length and head position. The bias signal is applied in response to a selectively accessed predicted bias value.

    摘要翻译: 公开了一种致动器系统,用于将致动器臂上的换能头定位在具有多个同心轨道的可旋转盘的选定轨道上。 致动器臂包括响应于致动器信号的电动机和偏置信号以相对于轨道移动头部。 致动器信号被施加到电动机以将磁头移动到盘上的磁道之间。 在磁头已经在磁道之间移动之后,偏置信号被施加到电动机,使磁头在选定磁道上居中。 提供查找表以将预测偏差值存储在通过搜索方向,先前搜索方向,寻找长度和头位置可寻址的位置中。 响应于选择性访问的预测偏置值来施加偏置信号。

    Gimbal suspension for supporting a head in a disc drive assembly
    18.
    发明授权
    Gimbal suspension for supporting a head in a disc drive assembly 失效
    用于将磁头支撑在磁盘驱动器组件中的云台悬架

    公开(公告)号:US5856896A

    公开(公告)日:1999-01-05

    申请号:US852225

    申请日:1997-05-06

    摘要: A gimbal for supporting a slider at its leading surface in a disc drive assembly includes a gimbal body, a slider support beam and a slider mounting tab. The slider support beam is carried by the gimbal body and defines a vertical slider alignment feature. The slider mounting tab extends out of plane from the slider support beam and defines a horizontal slider alignment feature. The slider mounting tab is attached to the leading surface of the slider. The design of the slider mounting tab of the present invention is useful for supporting a leading edge microactuator at a leading edge of the slider for micropositioning a transducer over ideal track centers on a disc surface.

    摘要翻译: 用于在盘驱动器组件的其前表面处支撑滑块的万向节包括万向主体,滑块支撑梁和滑块安装凸片。 滑块支撑梁由万向架主体承载并且限定垂直滑块对准特征。 滑块安装片从滑块支撑梁延伸离开平面,并定义了水平滑块对准功能。 滑块安装片附接到滑块的前导表面。 本发明的滑块安装片的设计对于在滑动件的前缘支撑前缘微型致动器是有用的,用于将传感器定位在盘表面上的理想轨道中心上。

    Head positioning control apparatus of disk drive and method of
controlling the same apparatus
    19.
    发明授权
    Head positioning control apparatus of disk drive and method of controlling the same apparatus 失效
    磁盘驱动器的头部定位控制装置和控制相同装置的方法

    公开(公告)号:US5844744A

    公开(公告)日:1998-12-01

    申请号:US820637

    申请日:1992-01-24

    IPC分类号: G11B5/55 G11B21/08 G11B21/18

    摘要: A head positioning apparatus and method for a disk drive system. During each computing time of a plurality of sequential computing times: (a) a position of a servo head on a disk is computed, (b) an actual position of the servo head in the present computing time is computed, based on the computed position of the servo head and an estimated position of the servo head computed in the preceding computing time, (c) a moving distance of the servo head is computed, based on the actual positions of the servo head computed in the present computing time and in the preceding computing time, (d) an estimated position of the servo head in the present computing time, indicating an estimated position reached by the servo head at the succeeding computing time, is computed from the actual position of the servo head computed in the present computing time to the moving distance of the servo head, (e) a moving velocity of the servo head is computed based on the actual position of the servo head computed in the present computing time and the actual position of the servo head computed in the preceding computing time, (f) a remaining number of tracks up to a target track is computed, based on the actual position of the servo head computed in the present computing time, and (g) an object velocity of the servo head is obtained, based on the remaining number of tracks.

    摘要翻译: PCT No.PCT / JP91 / 00870 Sec。 371日期:1993年10月18日 102(e)日期1993年10月18日PCT提交1990年6月27日PCT公布。 出版物WO92 / 11636 日本1992年7月9日磁头驱动系统的头部定位装置及方法。 在多个顺序计算时间的每个计算时间期间:(a)计算一个伺服磁头在磁盘上的位置,(b)基于计算出的位置计算当前计算时间内的伺服磁头的实际位置 伺服头的计算位置和前一计算时间中计算的伺服头的估计位置,(c)基于当前计算时间内计算出的伺服头的实际位置,计算伺服头的移动距离, (d)当前计算时间内的伺服头的估计位置,表示在随后的计算时刻由伺服头达到的估计位置,根据本计算中计算的伺服头的实际位置计算 时间到伺服头的移动距离,(e)伺服头的移动速度是根据在当前计算时间内计算的伺服头的实际位置和伺服头的实际位置来计算的 (f)基于在当前计算时间中计算的伺服头的实际位置,计算直到目标轨道的剩余轨道数,以及(g)目标轨迹的目标速度, 基于剩余的轨道数获得伺服头。

    Method and apparatus for compensating track position due to written-in
runout error in a disc drive
    20.
    发明授权
    Method and apparatus for compensating track position due to written-in runout error in a disc drive 失效
    由于磁盘驱动器中的写入跳动错误而补偿轨道位置的方法和装置

    公开(公告)号:US5825578A

    公开(公告)日:1998-10-20

    申请号:US661623

    申请日:1996-06-11

    摘要: A disc drive device where data and servo position information is stored in data segments on concentric tracks on the disc surface. The servo position information indicates the track centerline for each data segment. The offset of the servo position information from an ideal track centerline for each track is measured and stored into memory. The read/write head, which accesses data on the disc tracks, is positioned over the track centerline based on the offset for each data segment.

    摘要翻译: 磁盘驱动装置,其中数据和伺服位置信息存储在磁盘表面的同心磁道上的数据段中。 伺服位置信息表示每个数据段的轨道中心线。 测量伺服位置信息与每个轨道的理想轨道中心线的偏移量并存储到存储器中。 访问磁盘轨道上的数据的读/写头基于每个数据段的偏移位于轨道中心线的上方。