公开(公告)号：US08395341B1

公开(公告)日：2013-03-12

申请号：US13195442

申请日：2011-08-01

申请人： Edward Ying ,  Pantas Sutardja

发明人： Edward Ying ,  Pantas Sutardja

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。

公开(公告)号：US07999500B1

公开(公告)日：2011-08-16

申请号：US12192901

申请日：2008-08-15

申请人： Edward Ying ,  Pantas Sutardja

发明人： Edward Ying ,  Pantas Sutardja

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。

公开(公告)号：US08094405B1

公开(公告)日：2012-01-10

申请号：US12258351

申请日：2008-10-24

申请人： Edward Ying ,  Pantas Sutardja ,  Man Cheung

发明人： Edward Ying ,  Pantas Sutardja ,  Man Cheung

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。

公开(公告)号：US07737793B1

公开(公告)日：2010-06-15

申请号：US12239568

申请日：2008-09-26

申请人： Edward Ying ,  Pantas Sutardja ,  David Rutherford

发明人： Edward Ying ,  Pantas Sutardja ,  David Rutherford

IPC分类号： G11B5/09 ,  H03L7/085

CPC分类号： G11B5/59688 ,  G11B5/09 ,  G11B5/59616 ,  G11B5/59666 ,  H03L7/08

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。

公开(公告)号：US08618764B1

公开(公告)日：2013-12-31

申请号：US13209206

申请日：2011-08-12

申请人： Edward Ying ,  Pantas Sutardja

发明人： Edward Ying ,  Pantas Sutardja

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。

公开(公告)号：US07990089B1

公开(公告)日：2011-08-02

申请号：US12192979

申请日：2008-08-15

申请人： Edward Ying ,  Pantas Sutardja

发明人： Edward Ying ,  Pantas Sutardja

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。

公开(公告)号：US07944313B1

公开(公告)日：2011-05-17

申请号：US12783454

申请日：2010-05-19

申请人： Edward Ying ,  Pantas Sutardja ,  David Rutherford

发明人： Edward Ying ,  Pantas Sutardja ,  David Rutherford

IPC分类号： G11B5/09 ,  H03L7/085

CPC分类号： G11B5/59688 ,  G11B5/09 ,  G11B5/59616 ,  G11B5/59666 ,  H03L7/08

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。

公开(公告)号：US07733588B1

公开(公告)日：2010-06-08

申请号：US11325277

申请日：2006-01-04

申请人： Edward Ying

发明人： Edward Ying

IPC分类号： G11B5/09

CPC分类号： G11B5/59688 ,  G11B5/59616 ,  G11B5/59666

摘要： A phase error reduction system includes a control module, a phase-locked loop (PLL) module, and a harmonic removal module. The control module generates source timestamps for a plurality of synchronization marks in a source signal using a clock and generates a plurality of target tirnestamps. The PLL module determines phase errors between the source timestamps and the target timestamps and minimizes the phase errors. The harmonic removal module removes harmonics of the phase errors using a weighted moving average filter (MAF). The harmonic removal module comprises a repetitive feed forward (RFF) module that includes an amplifier the scales the phase errors, a delay buffer that generates RFF commands to reduce the phase errors, and a summing module. The MAF filters the RFF commands. The summing module provides sums of the phase errors scaled by the amplifier and the RFF commands filtered by the weighted MAF to the delay buffer.

摘要翻译： 相位误差减小系统包括控制模块，锁相环（PLL）模块和谐波消除模块。 控制模块使用时钟在源信号中生成多个同步标记的源时间戳，并产生多个目标文件。 PLL模块确定源时间戳和目标时间戳之间的相位误差，并使相位误差最小化。 谐波消除模块使用加权移动平均滤波器（MAF）去除相位误差的谐波。 谐波消除模块包括重复的前馈（RFF）模块，其包括缩放相位误差的放大器，产生RFF命令以减少相位误差的延迟缓冲器以及求和模块。 MAF过滤RFF命令。 求和模块提供由放大器缩放的相位误差和由加权的MAF过滤的RFF命令与延迟缓冲器的和。

公开(公告)号：US07936530B1

公开(公告)日：2011-05-03

申请号：US12186441

申请日：2008-08-05

申请人： Luan Ton-That ,  Edward Ying

发明人： Luan Ton-That ,  Edward Ying

IPC分类号： G11B21/12 ,  G11B5/55

CPC分类号： G11B5/59633 ,  G11B5/59638 ,  G11B5/59661

摘要： The present disclosure includes systems and techniques relating to writing ramp-tracks on a computer readable medium. In some implementations, a trajectory is identified across previously written tracks on a surface of a machine-readable medium for a read-write head to move along and build up velocity. Identifying the trajectory includes identifying one of the previously written tracks as a launch location from which to launch the read-write head. Identifying the trajectory also includes identifying a start writing location near a blank region of the surface of the machine-readable medium at which to turn on a write gate. A current is applied to the read-write head to cause the read-write head to move along the trajectory. In addition, the identified launch location is adjusted until a target velocity is obtained at the start writing location.

摘要翻译： 本公开包括与在计算机可读介质上写入斜坡轨迹有关的系统和技术。 在一些实施方案中，在机读可读介质的表面上的先前写入的轨道上识别轨迹，以便读写头沿着移动并建立速度。 识别轨迹包括将先前写入的轨迹之一识别为启动读写头的发射位置。 识别轨迹还包括识别机器可读介质的表面的空白区域附近的开始写入位置，以在其上打开写入门。 电流被施加到读写头以使读写头沿着轨迹移动。 此外，调整识别的发射位置，直到在开始写入位置获得目标速度。