公开(公告)号：US20070013337A1

公开(公告)日：2007-01-18

申请号：US11170332

申请日：2005-06-29

申请人： KeXiu Liu ,  MingZhong Ding ,  KianKeong Ooi ,  QingWei Jia

发明人： KeXiu Liu ,  MingZhong Ding ,  KianKeong Ooi ,  QingWei Jia

IPC分类号： G05B5/01

CPC分类号： G11B5/59622 ,  G11B5/5526

摘要： A voltage-mode VCM controller is provided comprising an Infinite Impulse Response (IIR) filter that modifies a servo control voltage signal to a voltage driver in response to an adaptive compensator that configures the IIR filter in relation to an observed VCM velocity and an actual VCM velocity. An associated method is provided comprising modeling a velocity response of a VCM to a voltage input; inputting the observed velocity and an actual VCM velocity to an adaptive compensator that computes a gain and a VCM response pole frequency in relation to the VCM resistance and inductance; configuring an IIR filter in relation to the computed gain and pole frequency values; and using the IIR filter to modify a voltage command from a servo controller to a power driver.

摘要翻译： 提供了一种电压模式VCM控制器，其包括无限脉冲响应（IIR）滤波器，其响应于相对于观察到的VCM速度和实际VCM配置IIR滤波器的自适应补偿器，将伺服控制电压信号修改为电压驱动器 速度。 提供了一种相关联的方法，包括将VCM的速度响应建模成电压输入; 将观测速度和实际VCM速度输入到相对于VCM电阻和电感计算增益和VCM响应极点频率的自适应补偿器; 配置相对于计算出的增益和极点频率值的IIR滤波器; 并使用IIR滤波器修改从伺服控制器到功率驱动器的电压指令。

公开(公告)号：US07199964B2

公开(公告)日：2007-04-03

申请号：US11170332

申请日：2005-06-29

申请人： KeXiu Liu ,  MingZhong Ding ,  KianKeong Ooi ,  QingWei Jia

发明人： KeXiu Liu ,  MingZhong Ding ,  KianKeong Ooi ,  QingWei Jia

IPC分类号： G11B21/02

CPC分类号： G11B5/59622 ,  G11B5/5526

摘要： A voltage-mode VCM controller is provided comprising an Infinite Impulse Response (IIR) filter that modifies a servo control voltage signal to a voltage driver in response to an adaptive compensator that configures the IIR filter in relation to an observed VCM velocity and an actual VCM velocity. An associated method is provided comprising modeling a velocity response of a VCM to a voltage input; inputting the observed velocity and an actual VCM velocity to an adaptive compensator that computes a gain and a VCM response pole frequency in relation to the VCM resistance and inductance; configuring an IIR filter in relation to the computed gain and pole frequency values; and using the IIR filter to modify a voltage command from a servo controller to a power driver.

公开(公告)号：US20070064334A1

公开(公告)日：2007-03-22

申请号：US11230168

申请日：2005-09-19

申请人： QingWei Jia ,  MingZhong Ding ,  KianKeong Ooi ,  Jianyi Wang

发明人： QingWei Jia ,  MingZhong Ding ,  KianKeong Ooi ,  Jianyi Wang

IPC分类号： G11B5/596

CPC分类号： G11B5/59605 ,  G11B5/5582

摘要： A data storage device adapted to compensate for physical disturbances has a storage medium, a read-write mechanism positionable relative to the storage medium, and a disturbance observer. The read-write mechanism is adapted to read and write data. The disturbance observer compensates a position of the read-write mechanism according to low-frequency components of physical disturbances.

摘要翻译： 适于补偿物理干扰的数据存储装置具有存储介质，相对于存储介质定位的读写机构和干扰观察器。 读写机制适用于读写数据。 干扰观测器根据物理扰动的低频分量补偿读写机构的位置。

公开(公告)号：US07576939B2

公开(公告)日：2009-08-18

申请号：US11940521

申请日：2007-11-15

申请人： KianKeong Ooi ,  KeXiu Liu ,  Shuyu Cao ,  MingZhong Ding

发明人： KianKeong Ooi ,  KeXiu Liu ,  Shuyu Cao ,  MingZhong Ding

IPC分类号： G11B21/02

CPC分类号： H02P6/182 ,  G11B5/022 ,  G11B5/5526 ,  G11B5/59605

摘要： A terminal voltage of an actuator motor is measured while the actuator motor is in a high impedance state. An internal voltage of the actuator motor is measured, and a back-EMF voltage of the actuator motor is estimated in response to the terminal voltage of the actuator motor and the internal voltage of the actuator motor. A drive current supplied to the actuator motor is controlled in response to the estimated back-EMF.

摘要翻译： 在执行器电动机处于高阻抗状态的同时测量致动器电动机的端子电压。 测量致动器电动机的内部电压，并且响应于致动器电动机的端子电压和致动器电动机的内部电压来估计致动器电动机的反电动势电压。 响应于估计的反电动势来控制提供给致动器电动机的驱动电流。

公开(公告)号：US20090128946A1

公开(公告)日：2009-05-21

申请号：US11940521

申请日：2007-11-15

申请人： KianKeong Ooi ,  KeXiu Liu ,  Shuyu Cao ,  MingZhong Ding

发明人： KianKeong Ooi ,  KeXiu Liu ,  Shuyu Cao ,  MingZhong Ding

IPC分类号： G11B21/02 ,  H02P23/00

CPC分类号： H02P6/182 ,  G11B5/022 ,  G11B5/5526 ,  G11B5/59605

摘要： A terminal voltage of an actuator motor is measured while the actuator motor is in a high impedance state. An internal voltage of the actuator motor is measured, and a back-EMF voltage of the actuator motor is estimated in response to the terminal voltage of the actuator motor and the internal voltage of the actuator motor. A drive current supplied to the actuator motor is controlled in response to the estimated back-EMF.

摘要翻译： 在执行器电动机处于高阻抗状态的同时测量致动器电动机的端子电压。 测量致动器电动机的内部电压，并且响应于致动器电动机的端子电压和致动器电动机的内部电压来估计致动器电动机的反电动势电压。 响应于估计的反电动势来控制提供给致动器电动机的驱动电流。

公开(公告)号：US07319570B2

公开(公告)日：2008-01-15

申请号：US11230168

申请日：2005-09-19

申请人： QingWei Jia ,  MingZhong Ding ,  KianKeong Ooi ,  Jianyi Wang

发明人： QingWei Jia ,  MingZhong Ding ,  KianKeong Ooi ,  Jianyi Wang

IPC分类号： G11B5/596

CPC分类号： G11B5/59605 ,  G11B5/5582

摘要： A data storage device adapted to compensate for physical disturbances has a storage medium, a read-write mechanism positionable relative to the storage medium, and a disturbance observer. The read-write mechanism is adapted to read and write data. The disturbance observer compensates a position of the read-write mechanism according to low-frequency components of physical disturbances.

摘要翻译： 适于补偿物理干扰的数据存储装置具有存储介质，相对于存储介质定位的读写机构和干扰观察器。 读写机制适用于读写数据。 干扰观测器根据物理扰动的低频分量补偿读写机构的位置。

公开(公告)号：US07595957B2

公开(公告)日：2009-09-29

申请号：US11771363

申请日：2007-06-29

申请人： KeXiu Liu ,  JianGuo Zhou ,  MingZhong Ding ,  KianKeong Ooi ,  WenJun Cao

发明人： KeXiu Liu ,  JianGuo Zhou ,  MingZhong Ding ,  KianKeong Ooi ,  WenJun Cao

IPC分类号： G11B5/596

CPC分类号： G11B5/5547

摘要： Apparatus and related methods are described for adjusting servo gain. In an exemplary apparatus, a circuit determines a bias force error that occurs between an estimated bias force and an actual bias force on an actuator during movement by a servo motor. The circuit adjusts a servo gain in response to the bias force error, and regulates movement of the actuator by the servo motor in response to the servo gain.

摘要翻译： 描述了用于调整伺服增益的装置和相关方法。 在示例性装置中，电路确定在由伺服电动机移动期间在估计的偏压力和致动器上的实际偏置力之间发生的偏压力误差。 该电路响应于偏压力误差调整伺服增益，并响应于伺服增益来调节伺服电机对致动器的运动。

公开(公告)号：US20090003146A1

公开(公告)日：2009-01-01

申请号：US11771363

申请日：2007-06-29

申请人： KeXiu Liu ,  JianGuo Zhou ,  MingZhong Ding ,  KianKeong Ooi ,  WenJun Cao

发明人： KeXiu Liu ,  JianGuo Zhou ,  MingZhong Ding ,  KianKeong Ooi ,  WenJun Cao

IPC分类号： G11B21/00

CPC分类号： G11B5/5547

摘要： Apparatus and related methods are described for adjusting servo gain. In an exemplary apparatus, a circuit determines a bias force error that occurs between an estimated bias force and an actual bias force on an actuator during movement by a servo motor. The circuit adjusts a servo gain in response to the bias force error, and regulates movement of the actuator by the servo motor in response to the servo gain.

摘要翻译： 描述了用于调整伺服增益的装置和相关方法。 在示例性装置中，电路确定在由伺服电动机移动期间在估计的偏压力和致动器上的实际偏置力之间发生的偏压力误差。 该电路响应于偏压力误差调整伺服增益，并响应于伺服增益来调节伺服电机对致动器的运动。

公开(公告)号：US06690534B2

公开(公告)日：2004-02-10

申请号：US09827339

申请日：2001-04-05

申请人： MingZhong Ding ,  YangQuan Chen ,  LeeLing Tan ,  Wing Kong Chiang ,  KianKeong Ooi ,  BengWee Quak

发明人： MingZhong Ding ,  YangQuan Chen ,  LeeLing Tan ,  Wing Kong Chiang ,  KianKeong Ooi ,  BengWee Quak

IPC分类号： G11B5596

CPC分类号： G11B5/5582

摘要： A method of handling multiple resonance frequencies in a disc drive includes monitoring a position error signal (PES) for an actuator arm, generating a plurality of feedforward compensation signals from the PES using a plurality of bandpass filters, and applying the compensation signals to a servo control signal. Each filter has a center frequency that is set to a problematic resonance frequency. The method may also include identifying the problematic frequencies by, for example, commanding a movement of the actuator arm, collecting data points for the PES that are associated with the movement, and performing a digital fourier transform of the data points to identify resonant frequencies. Other methods of identifying problematic frequencies include analyzing PES zero-crossing data, or using principal component analysis.

摘要翻译： 一种在盘驱动器中处理多个共振频率的方法包括监视致动器臂的位置误差信号（PES），使用多个带通滤波器从PES产生多个前馈补偿信号，并将补偿信号施加到伺服 控制信号。 每个滤波器的中心频率被设置为有问题的共振频率。 该方法还可以包括通过例如指令致动器臂的移动来收集有问题的频率，收集与移动相关联的PES的数据点，以及执行数据点的数字傅里叶变换以识别共振频率。 识别有问题频率的其他方法包括分析PES过零数据，或使用主成分分析。

公开(公告)号：US06574067B2

公开(公告)日：2003-06-03

申请号：US09759754

申请日：2001-01-12

申请人： YangQuan Chen ,  MingZhong Ding ,  LinCheng Xiu ,  KianKeong Ooi ,  LeeLing Tan

发明人： YangQuan Chen ,  MingZhong Ding ,  LinCheng Xiu ,  KianKeong Ooi ,  LeeLing Tan

IPC分类号： G11B5596

CPC分类号： G11B5/59605 ,  G11B5/5521

摘要： A repetitive learning compensator for a servo system of a disc drive includes a memory buffer having a length N/m where N is the number of servo sectors in a track, m is a parsing factor greater than 1 and N/m is an integer. A down sampler supplies servo signals containing error signals to the repetitive learning compensator at a frequency of fs/m, where fs is a sampling frequency based on N and a fundamental frequency f0 of the spindle motor. An up sampler supplies filtered signals from the repetitive learning compensator to the actuator assembly at the sampling frequency fs. One aspect of the disclosure includes tuning the repetitive learning compensator with a phase advance represented by NPA and a cutoff frequency fc, where NPA and fc are selected as a pair to provide the greatest transfer function amplitude at the harmonic frequencies for the repetitive learning compensator.

摘要翻译： 用于盘驱动器的伺服系统的重复学习补偿器包括具有长度N / m的存储器缓冲器，其中N是轨道中的伺服扇区的数量，m是大于1的解析因子，N / m是整数。 下采样器以fs / m的频率向重复学习补偿器提供含有误差信号的伺服信号，其中fs是基于N的采样频率和主轴电机的基频f0。 上采样器以重复学习补偿器将滤波信号以采样频率fs提供给执行器组件。 本公开的一个方面包括用由NPA表示的相位提前和截止频率fc来调整重复学习补偿器，其中NPA和fc被选择为一对以在重复学习补偿器的谐波频率处提供最大的传递函数幅度。