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公开(公告)号：US07602572B2
公开(公告)日：2009-10-13
申请号：US11709184
申请日：2007-02-21
CPC分类号： G11B5/59688
摘要： Adjusting a servo control system includes identifying a gain crossover frequency for the servo control system, generating a sensitivity function for the servo control system, measuring a sensitivity peak in the sensitivity function, comparing a frequency of the sensitivity peak to the gain crossover frequency, and adjusting the servo control system in response to the comparison of the frequency of the sensitivity peak to the gain crossover frequency.
摘要翻译： 调整伺服控制系统包括识别伺服控制系统的增益交叉频率，产生伺服控制系统的灵敏度功能，测量灵敏度函数中的灵敏度峰值，将灵敏度峰值的频率与增益交叉频率进行比较，以及 响应于灵敏度峰值的频率与增益交叉频率的比较来调整伺服控制系统。
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公开(公告)号：US07489472B2
公开(公告)日：2009-02-10
申请号：US11657161
申请日：2007-01-24
IPC分类号： G11B5/596
CPC分类号： G11B5/59616 , G11B5/5521
摘要： A method of providing a control output by selecting a controller to an actuator is discussed. A first controller having an estimator-compensator architecture is selected if the actuator is in a settle stage. A second controller having an architecture other than that of the first controller is selected when the actuator is in a track follow stage. The control output is provided from the selected controller to the actuator. The control output is indicative of the control signal.
摘要翻译： 讨论了通过向致动器选择控制器来提供控制输出的方法。 如果执行器处于结算阶段，则选择具有估计器 - 补偿器架构的第一控制器。 当致动器处于跟踪阶段时，选择具有不同于第一控制器的结构的第二控制器。 控制输出从所选择的控制器提供给致动器。 控制输出表示控制信号。
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公开(公告)号：US20070268797A1
公开(公告)日：2007-11-22
申请号：US11709184
申请日：2007-02-21
IPC分类号： G11B7/00
CPC分类号： G11B5/59688
摘要： Adjusting a servo control system includes identifying a gain crossover frequency for the servo control system, generating a sensitivity function for the servo control system, measuring a sensitivity peak in the sensitivity function, comparing a frequency of the sensitivity peak to the gain crossover frequency, and adjusting the servo control system in response to the comparison of the frequency of the sensitivity peak to the gain crossover frequency.
摘要翻译： 调整伺服控制系统包括识别伺服控制系统的增益交叉频率，产生伺服控制系统的灵敏度功能，测量灵敏度函数中的灵敏度峰值，将灵敏度峰值的频率与增益交叉频率进行比较，以及 响应于灵敏度峰值的频率与增益交叉频率的比较来调整伺服控制系统。
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4.发明授权公开(公告)号：US06819521B2
公开(公告)日：2004-11-16
申请号：US09877053
申请日：2001-06-08
IPC分类号： G11B5596
CPC分类号： G11B5/59627
摘要： An apparatus and method for compensating repeated runout position error in a disc drive data handling system having an actuator assembly which supports a head adjacent a recording surface. A servo loop generates a position error signal (PES) to control the position of the head. A digital filter is configured to place a notch in an error sensitivity function relating the PES to the repeated runout position error, with the notch being nominally centered at a frequency of rotation of the recording surface. The filter thereafter filters the PES to generate compensation signals that are injected into the servo loop. At least selected filter parameters are determined by measuring the frequency response of the servo loop and used as a priori knowledge to produce a loop matching effect that results in a consistent convergence rate for any targeted frequency to be filtered.
摘要翻译： 一种补偿盘驱动数据处理系统中的重复跳动位置误差的装置和方法，所述盘驱动器数据处理系统具有支撑靠近记录表面的头部的致动器组件。 伺服回路产生位置误差信号（PES）以控制头部的位置。 数字滤波器被配置成将陷波放置在将PES与重复的跳动位置误差相关联的误差灵敏度功能中，其中凹口名义上以记录表面的旋转频率为中心。 滤波器之后过滤PES以产生注入伺服环路的补偿信号。 至少选择的滤波器参数通过测量伺服环路的频率响应来确定，并用作先验知识以产生环路匹配效应，其导致任何要被滤波的目标频率的一致的收敛速率。
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公开(公告)号：US20080174900A1
公开(公告)日：2008-07-24
申请号：US11657161
申请日：2007-01-24
IPC分类号： G11B15/18
CPC分类号： G11B5/59616 , G11B5/5521
摘要： A method of providing a control output by selecting a controller to an actuator is discussed. A first controller having an estimator-compensator architecture is selected if the actuator is in a settle stage. A second controller having an architecture other than that of the first controller is selected when the actuator is in a track follow stage. The control output is provided from the selected controller to the actuator. The control output is indicative of the control signal.
摘要翻译： 讨论了通过向致动器选择控制器来提供控制输出的方法。 如果执行器处于结算阶段，则选择具有估计器 - 补偿器架构的第一控制器。 当致动器处于跟踪阶段时，选择具有不同于第一控制器的结构的第二控制器。 控制输出从所选择的控制器提供给致动器。 控制输出表示控制信号。
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公开(公告)号：US20080159105A1
公开(公告)日：2008-07-03
申请号：US11617522
申请日：2006-12-28
IPC分类号： G11B20/18
CPC分类号： G11B20/18 , G11B5/59627
摘要： Systems and methods are disclosed for detecting spindle motor degradation. A method includes issuing an alert if a difference between feed forward compensation signals of repeatable runout determined at a first time and feed forward compensation signals of repeatable runout determined at a second time satisfies a first threshold condition. A method may further include issuing an alert if a delta difference between a first difference and a second difference satisfies a second threshold condition. The first difference represents a difference between the feed forward compensation signals of repeatable runout at the first time and the feed forward compensation signals of repeatable runout at the second time. The second difference represents a difference between the feed forward compensation signals of repeatable runout at the first time and feed forward compensation signals of repeatable runout at a third time.
摘要翻译： 公开了用于检测主轴电机劣化的系统和方法。 一种方法包括：如果在第一时间确定的可重复跳动的前馈补偿信号与在第二时间确定的可重复跳动的前馈补偿信号之间的差异满足第一阈值条件，则发出警报。 方法还可以包括：如果第一差异和第二差异之间的差值差异满足第二阈值条件，则发出警报。 第一个差异表示第一次可重复跳动的前馈补偿信号与第二次可重复跳动的前馈补偿信号之间的差异。 第二个差异表示第一次可重复跳动的前馈补偿信号与第三次可重复跳动的前馈补偿信号之间的差异。
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7.发明授权Method and apparatus for reducing off-track writes in data storage devices 失效用于减少数据存储设备中的偏离写入的方法和装置公开(公告)号：US07224543B1
公开(公告)日：2007-05-29
申请号：US10861101
申请日：2004-06-04
IPC分类号： G11B15/04
CPC分类号： G11B5/59627 , G11B5/59688 , G11B5/59694
摘要： The present invention is directed to a method and apparatus for reducing off-track writes in a data storage device. In one embodiment, a command is received to perform a write operation using a write head at a first location on a disk surface. A determination is made as to whether to perform or inhibit the write operation using an equation having a tunable acceleration coefficient. The equation is used to predict a position error signal (PES) value for a write head at a servo sector that immediately circumferentially follows the first location (i.e., there are no intervening servo sectors between the servo sector and the first location). If the predicted PES value is outside of (e.g., greater than or less than) a predetermined threshold, an off-track write is likely to occur and the write operation is inhibited.
摘要翻译： 本发明涉及用于减少数据存储设备中的偏离写入的方法和装置。 在一个实施例中，接收命令以在盘表面上的第一位置使用写入头执行写入操作。 使用具有可调加速度系数的方程来确定是执行还是禁止写入操作。 该等式用于预测在伺服扇区处的写入头的位置误差信号（PES）值，该伺服扇区在第一位置（即伺服扇区与第一位置之间不存在中间的伺服扇区）。 如果预测的PES值超出（例如，大于或小于）预定阈值，则可能发生偏离磁道写入，并且禁止写入操作。
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