Repetitive error correction method for disk-drive servo control systems
    1.
    发明授权
    Repetitive error correction method for disk-drive servo control systems 有权
    磁盘驱动伺服控制系统的重复纠错方法

    公开(公告)号:US08094405B1

    公开(公告)日:2012-01-10

    申请号:US12258351

    申请日:2008-10-24

    IPC分类号: G11B5/596

    CPC分类号: G11B5/59627

    摘要: Methods, systems and computer program products for compensating repeatable run-out (RRO) are described. In some implementations, RRO may be compensated by predicting the RRO and subsequently subtracting the predicted RRO from the actual value of the RRO to cancel out the undesired effect caused by the RRO during operation. More specifically, RRO generated at each spindle motor rotation may be predicted by measuring the position errors associated with the RRO with respect to a current position of a read/write head. A computational model then may be utilized to determine one or more correction factors to compensate for the RRO.

    摘要翻译: 描述了用于补偿可重复耗尽(RRO)的方法,系统和计算机程序产品。 在一些实现中,RRO可以通过预测RRO并随后从RRO的实际值中减去预测的RRO来补偿,以消除在操作期间由RRO引起的不期望的影响。 更具体地,可以通过测量与RRO相关的位置误差来相对于读/写头的当前位置来预测在每个主轴电动机旋转处产生的RRO。 然后可以使用计算模型来确定补偿RRO的一个或多个校正因子。

    Self-servo write stitching system
    2.
    发明授权
    Self-servo write stitching system 有权
    自动伺服写缝系统

    公开(公告)号:US07646559B1

    公开(公告)日:2010-01-12

    申请号:US11904117

    申请日:2007-09-26

    IPC分类号: G11B21/02 G11B5/09 G11B5/596

    摘要: A control system includes a write head that writes servo data on a rotating medium. A control module signals the write head to write a servo test track on the rotating medium and subsequent to a reference servo track. The reference servo track is written prior to an interrupt event. The control module detects a position of the servo test track relative to the reference servo track and signals the write head to write a new servo track based on the position after the interrupt event.

    摘要翻译: 控制系统包括将伺服数据写在旋转介质上的写入头。 控制模块向写入头发出信号,以将伺服测试轨迹写入旋转介质上并在基准伺服轨迹之后。 参考伺服磁道在中断事件之前写入。 控制模块检测伺服测试轨迹相对于参考伺服磁道的位置,并且根据中断事件之后的位置,向写入头发信号以写入新的伺服磁道。

    Self-servo write stitching system
    3.
    发明授权
    Self-servo write stitching system 有权
    自动伺服写缝系统

    公开(公告)号:US07791832B1

    公开(公告)日:2010-09-07

    申请号:US12685264

    申请日:2010-01-11

    IPC分类号: G11B21/02 G11B5/09 G11B5/596

    摘要: A control system includes a write head and a control module configured to signal the write head to write a servo test track on a rotating medium at a position relative to a reference servo track on the rotating medium. The servo test track is written on the rotating medium subsequent to an interrupt event. The reference servo track having been written to the rotating medium prior to the interrupt event, detects the position of the servo test track relative to the reference servo track and signals the write head to write a new servo track on the rotating medium based on the detected position of the servo test track relative to the reference servo track.

    摘要翻译: 控制系统包括一个写入头和一个控制模块,该控制模块被配置为用信号通知写入头,在相对于旋转介质上的参考伺服轨道的位置的旋转介质上写入伺服测试轨迹。 在中断事件发生后,将伺服测试轨迹写入旋转介质。 已经在中断事件之前被写入旋转介质的参考伺服轨迹检测到伺服测试轨道相对于参考伺服轨道的位置,并且基于检测到的信号向写入头发信号以在旋转介质上写入新的伺服轨迹 伺服测试轨道相对于参考伺服轨道的位置。

    Repetitive error correction method for disk-drive spindle motor control systems
    4.
    发明授权
    Repetitive error correction method for disk-drive spindle motor control systems 有权
    磁盘驱动主轴电机控制系统的重复纠错方法

    公开(公告)号:US08395341B1

    公开(公告)日:2013-03-12

    申请号:US13195442

    申请日:2011-08-01

    IPC分类号: H02P6/08

    CPC分类号: G11B19/28

    摘要: Methods, systems and computer program products for compensating repeatable timing variations associated with a spindle motor are described. Specifically, a repetitive error correction factor may be determined using a computational model which predicts timing variations. The correction factor can then be used to cancel the effect of the actual timing variations upon the spindle motor.

    摘要翻译: 描述了用于补偿与主轴电机相关联的可重复定时变化的方法,系统和计算机程序产品。 具体地,可以使用预测定时变化的计算模型来确定重复误差校正因子。 然后可以使用校正因子来消除主轴电动机上实际定时变化的影响。

    Calibrating spindle motor controllers
    5.
    发明授权
    Calibrating spindle motor controllers 有权
    校准主轴电机控制器

    公开(公告)号:US07999500B1

    公开(公告)日:2011-08-16

    申请号:US12192901

    申请日:2008-08-15

    IPC分类号: G05D23/275

    CPC分类号: G05D23/275

    摘要: Methods, systems, and apparatus, including computer program products, are described for calibrating spindle motor controllers. In one aspect, a method is provided that includes receiving a compensator output from a spindle motor controller that compensates for variations in a velocity of an associated spindle motor, and filtering the compensator output to compensate for a spindle motor system pole and produce a high frequency roll-off.

    摘要翻译: 描述了用于校准主轴电机控制器的方法,系统和装置,包括计算机程序产品。 一方面,提供了一种方法,其包括从主轴电动机控制器接收补偿器输出,该主轴电动机控制器补偿相关主轴电动机的速度变化,并且过滤补偿器输出以补偿主轴电机系统极点并产生高频 滚下。

    Calibrating spindle motor controllers
    6.
    发明授权
    Calibrating spindle motor controllers 有权
    校准主轴电机控制器

    公开(公告)号:US08618764B1

    公开(公告)日:2013-12-31

    申请号:US13209206

    申请日:2011-08-12

    IPC分类号: G05D23/275

    CPC分类号: G05D23/275

    摘要: Methods, systems, and apparatus include, in one aspect, a method including receiving from a controller a signal for controlling a device for rotating a machine-readable medium; and increasing a bandwidth of a transfer function corresponding to the controller by at least filtering the signal to compensate for a pole of the transfer function.

    摘要翻译: 在一个方面,方法,系统和装置包括一种方法,包括从控制器接收用于控制用于旋转机器可读介质的设备的信号; 以及通过至少过滤所述信号以补偿所述传递函数的极点来增加与所述控制器相对应的传递函数的带宽。

    Repetitive error correction method for disk-drive spindle motor control systems
    7.
    发明授权
    Repetitive error correction method for disk-drive spindle motor control systems 有权
    磁盘驱动主轴电机控制系统的重复纠错方法

    公开(公告)号:US07990089B1

    公开(公告)日:2011-08-02

    申请号:US12192979

    申请日:2008-08-15

    IPC分类号: H02P6/08

    CPC分类号: G11B19/28

    摘要: Methods, systems and computer program products for compensating repeatable timing variations associated with a spindle motor are described. Specifically, a repetitive error correction factor may be determined using a computational model which predicts timing variations. The correction factor can then be used to cancel the effect of the actual timing variations upon the spindle motor.

    摘要翻译: 描述了用于补偿与主轴电机相关联的可重复定时变化的方法,系统和计算机程序产品。 具体地,可以使用预测定时变化的计算模型来确定重复误差校正因子。 然后可以使用校正因子来消除主轴电动机上实际定时变化的影响。

    Calibrating control loops
    8.
    发明授权
    Calibrating control loops 有权
    校准控制回路

    公开(公告)号:US07944313B1

    公开(公告)日:2011-05-17

    申请号:US12783454

    申请日:2010-05-19

    IPC分类号: G11B5/09 H03L7/085

    摘要: Systems and techniques to calibrate a control loop include, in at least one implementation, a system including the control loop configured to generate a clock signal and lock the clock signal to timing marks detected on a machine readable medium, a repetitive error correction module configured to receive a predicted phase and a corrected phase error for the clock signal, generate a predicted repetitive phase disturbance using the predicted phase and the corrected phase error for the clock signal, and calibrate a phase error to compensate for variations in repetitive phase errors in the clock signal using the predicted repetitive phase disturbance; and a servo track generator configured to generate servo tracks using the clock signal.

    摘要翻译: 用于校准控制回路的系统和技术包括在至少一个实施方式中的系统,该系统包括被配置为产生时钟信号并将时钟信号锁定到在机器可读介质上检测到的定时标记的控制回路,重复误差校正模块被配置为 接收时钟信号的预测相位和校正的相位误差,使用预测相位产生预测的重复相位扰动,并校正时钟信号的相位误差,并且校准相位误差以补偿时钟中重复相位误差的变化 信号采用预测的重复相位扰动; 以及配置为使用所述时钟信号产生伺服磁道的伺服磁道发生器。

    Calibrating control loops
    9.
    发明授权
    Calibrating control loops 有权
    校准控制回路

    公开(公告)号:US07737793B1

    公开(公告)日:2010-06-15

    申请号:US12239568

    申请日:2008-09-26

    IPC分类号: G11B5/09 H03L7/085

    摘要: Methods, systems, and apparatus, including computer program products, are described for calibrating control loops, specifically phase-locked loops. In one aspect, an apparatus is provided that includes an oscillator model that generates a predicted phase based on an input, a first averaging submodule that generates an average predicted phase over a predetermined number of samples, and a first summing submodule that receives a first corrected phase error and generates a predicted repetitive phase disturbance using the first corrected phase error, the predicted phase, and the average predicted phase.

    摘要翻译: 描述了包括计算机程序产品在内的方法,系统和装置,用于校准控制回路,特别是锁相环。 一方面,提供了一种装置,其包括基于输入生成预测相位的振荡器模型,产生预定数量样本的平均预测相位的第一平均子模块和接收第一校正后的第一求和子模块 相位误差,并使用第一校正相位误差,预测相位和平均预测相位产生预测的重复相位干扰。

    Buck regulator for LED lighting color mixing and/or current compensation
    10.
    发明授权
    Buck regulator for LED lighting color mixing and/or current compensation 有权
    降压调节器用于LED照明混色和/或电流补偿

    公开(公告)号:US09445475B1

    公开(公告)日:2016-09-13

    申请号:US13551118

    申请日:2012-07-17

    IPC分类号: H05B33/08

    摘要: A light emitting diode (LED) lighting system includes a first string of first LEDs emitting light having a first color. A second string of second LEDs emits light having a second color and connected in series with the first string of first LEDs; A first switch and a second switch are connected in series. A regulator module is configured to modulate the first switch and the second switch to provide a desired current ratio. The desired current ratio corresponds to a ratio of a first current through the first string of first LEDs to a second current through the second string of second LEDs.

    摘要翻译: 发光二极管(LED)照明系统包括发射具有第一颜色的光的第一串第一LED。 第二串第二LED发射具有第二颜色并与第一串第一LED串联连接的光; 第一开关和第二开关串联连接。 调节器模块被配置为调制第一开关和第二开关以提供期望的电流比。 期望的电流比对应于通过第一串第一LED的第一电流与通过第二LED的第二串的第二电流的比率。