公开(公告)号：US06324890B1

公开(公告)日：2001-12-04

申请号：US09584563

申请日：2000-05-31

申请人： Ricky Wei Watt Yeo ,  KianKeong Ooi ,  Louis Seng Hong Pang ,  MingZhong Ding ,  YangQuan Chen ,  Beng Wee Quak

发明人： Ricky Wei Watt Yeo ,  KianKeong Ooi ,  Louis Seng Hong Pang ,  MingZhong Ding ,  YangQuan Chen ,  Beng Wee Quak

IPC分类号： G01N3312

CPC分类号： G01N19/02

摘要： A method of characterizing and screening a disc drive based on a voice coil motor pivot friction developed during a low velocity seek operation consists of determining estimated drive level bias values required by the voice coil motor to move an actuator arm assembly during a fast seek, then determining a low velocity drive level bias values required by the voice coil motor to move an actuator arm assembly during a slow seek, then computing a difference between the estimate drive level bias values and the low velocity drive level bias values, then determining a hit counter value based on comparing the computed difference with a predetermined threshold value, and then characterizing the disc drive based on the hit counter value.

摘要翻译： 基于在低速搜索操作期间产生的音圈电动机枢转摩擦来表征和筛选磁盘驱动器的方法包括确定音圈电机在快速寻找期间移动致动器臂组件所需的估计的驱动电平偏置值，然后 确定音速电动机在慢速寻找期间移动致动器臂组件所需的低速驱动电平偏置值，然后计算估计驱动电平偏置值和低速驱动电平偏置值之间的差，然后确定命中计数器 基于计算出的差异与预定阈值进行比较，然后基于命中计数器值表征盘驱动器的值。

公开(公告)号：US06636375B1

公开(公告)日：2003-10-21

申请号：US09584261

申请日：2000-05-31

申请人： MingZhong Ding ,  KianKeong Ooi ,  Louis Seng Hong Pang ,  Ricky Wei Watt Yeo ,  YangQuan Chen

发明人： MingZhong Ding ,  KianKeong Ooi ,  Louis Seng Hong Pang ,  Ricky Wei Watt Yeo ,  YangQuan Chen

IPC分类号： G11B5596

CPC分类号： G11B5/5556

摘要： According to one embodiment of the present invention, a disc drive includes a disc and a transducer supported by an actuator assembly that is accelerated by controlling current in a voice coil. The disc drive controls a position of the transducer over a present track on the disc in a track-and-follow mode, generates an estimated bias current to be applied to the voice coil to balance a bias on the actuator assembly when the transducer is over the present track, starts a movement of the transducer toward a target track in a seek mode, enters the estimated bias current into a bias table if an immediately preceding movement of the transducer in the seek mode was longer than a seek length boundary such that nonlinear friction in a pivot in the actuator assembly is less substantial, and applies a bias current to the voice coil calculated based on a bias current entry in the bias table during the seek mode.

摘要翻译： 根据本发明的一个实施例，盘驱动器包括盘和由致动器组件支撑的换能器，其通过控制音圈中的电流来加速。 磁盘驱动器以跟踪和跟随模式控制盘上的当前磁道上的传感器的位置，产生要施加到音圈的估计偏置电流，以在传感器结束时平衡致动器组件上的偏置 当前轨道在寻道模式下开始朝向目标轨迹的移动，如果在寻找模式中的换能器的紧接在前的移动长于搜索长度边界，则将估计的偏置电流输入到偏置表中，使得非线性 在致动器组件中的枢轴中的摩擦较小，并且在寻道模式期间，基于偏置台中的偏置电流入口计算出的偏置电流到音圈。

公开(公告)号：US06674589B2

公开(公告)日：2004-01-06

申请号：US09792654

申请日：2001-02-23

申请人： ShuangQuan Min ,  Ricky Wei Watt Yeo ,  KianKeong Ooi ,  MingZhong Ding ,  YangQuan Chen

发明人： ShuangQuan Min ,  Ricky Wei Watt Yeo ,  KianKeong Ooi ,  MingZhong Ding ,  YangQuan Chen

IPC分类号： G11B2736

CPC分类号： G11B27/36 ,  G11B5/59627 ,  G11B2220/20

摘要： A disc drive device includes a base and a disc rotatably attached to the base. The disc drive also includes an actuator assembly rotatably attached to said base and a device for moving the actuator assembly. The actuator assembly includes an actuator arm and a transducer head in a transducing relationship with respect to the disc. The transducer is attached to the actuator arm. A method of screening disc drives for harmonic resonant frequencies includes sampling the position error signal at a track location in the disc drive, and determining the velocity of the position error signal from the sample of the position error signal. The velocity of the position error signal sample is divided by the position error signal to produce a quotient. The quotient is compared to a selected quotient threshold value to determine the type of a harmonic in the disc drive.

摘要翻译： 盘驱动装置包括基座和可旋转地附接到基座的盘。 盘驱动器还包括可旋转地附接到所述基座的致动器组件和用于移动致动器组件的装置。 致动器组件包括致动器臂和相对于盘的换能关系的换能器头。 传感器连接到执行器臂。 筛选用于谐波谐振频率的盘驱动器的方法包括对盘驱动器中的轨道位置处的位置误差信号进行采样，以及从位置误差信号的样本确定位置误差信号的速度。 位置误差信号采样的速度被位置误差信号除以产生商。 将商与所选商门限值进行比较，以确定盘驱动器中谐波的类型。

公开(公告)号：US06704159B2

公开(公告)日：2004-03-09

申请号：US09810337

申请日：2001-03-16

申请人： MingZhong Ding ,  KianKeong Ooi ,  YangQuan Chen ,  Jack Ming Teng ,  ShuangQuan Min ,  Beng Wee Quak

发明人： MingZhong Ding ,  KianKeong Ooi ,  YangQuan Chen ,  Jack Ming Teng ,  ShuangQuan Min ,  Beng Wee Quak

IPC分类号： G11B5596

CPC分类号： G11B21/02 ,  G11B19/28

摘要： A method of implementing an automatic acoustic management feature for a disc drive includes receiving an acoustic/performance compromising factor from a host, tuning disc drive performance by applying the factor to a control parameter to generate a modified control parameter, and executing a loop for controlling a disc drive operation using the modified control parameter. In another embodiment, a disc drive has a base, a rotatable disc, an actuator assembly with an arm for carrying a head in transducing relation to the disc in response to a control signal, a receiver for receiving an acoustic/performance compromising factor, and a controller that monitors the position of the arm and generates the control signal. The controller executes a seeking control loop having a control parameter modified by applying a compromising factor to the parameter to tune the acoustic performance of the drive.

摘要翻译： 实现用于盘驱动器的自动声学管理特征的方法包括从主机接收声学/性能损害因子，通过将因子应用于控制参数来产生修改的控制参数来调谐盘驱动器性能，以及执行用于控制的循环 使用修改的控制参数的盘驱动器操作。 在另一个实施例中，盘驱动器具有底座，可旋转盘，具有臂的致动器组件，用于响应于控制信号而承载头与盘转换的关系，接收器用于接收声学/性能损害因子，以及 监控臂的位置并产生控制信号的控制器。 控制器执行寻道控制回路，其具有通过对参数应用折中因子而修正的控制参数，以调节驱动器的声学性能。

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。

公开(公告)号：US06751036B2

公开(公告)日：2004-06-15

申请号：US09902428

申请日：2001-07-10

申请人： Beng Wee Quak ,  KokHoe Chia ,  Kwee Teck Say ,  KianKeong Ooi ,  Soon Wah Leow ,  Song Wee Teo

发明人： Beng Wee Quak ,  KokHoe Chia ,  Kwee Teck Say ,  KianKeong Ooi ,  Soon Wah Leow ,  Song Wee Teo

IPC分类号： G11B509

CPC分类号： G11B27/36 ,  G11B5/012 ,  G11B20/1816 ,  G11B33/10 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2220/20

摘要： A data storage device has a plurality of head/surface combinations with different data track densities on at least two surfaces. A minimum head quality is established for the data storage apparatus. Head quality is identified for each of the heads at each of a plurality of track densities. A tuned track density is selected for each surface based on the track density that corresponds to a head quality.

摘要翻译： 数据存储装置具有在至少两个表面上具有不同数据磁道密度的多个头/表面组合。 为数据存储装置建立最小的头部质量。 在多个磁道密度中的每一个处识别每个磁头的磁头质量。 基于对应于头部质量的轨道密度，为每个表面选择调谐轨道密度。

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：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：US06995946B2

公开(公告)日：2006-02-07

申请号：US10608046

申请日：2003-06-27

申请人： Mingzhong Ding ,  KianSoon Yeo ,  JianYi Wang ,  KianKeong Ooi ,  BengWee Quak

发明人： Mingzhong Ding ,  KianSoon Yeo ,  JianYi Wang ,  KianKeong Ooi ,  BengWee Quak

IPC分类号： G11B5/55

CPC分类号： G11B5/5582 ,  G11B5/5547 ,  G11B5/5565

摘要： Methods relating to compensating a pre-defined seek profile for use in a data storage device, such as a disc drive, to manage the internal temperature of the device are disclosed. One embodiment disclosed is related to determining a seek profile compensation value that can be used to compensate the pre-defined seek profile for temperature. Another embodiment is a method of using a seek profile compensation value during device operation to maintain the data storage device operating temperature below an operating temperature threshold. Yet another embodiment of the present invention may be thought of as a controller for a data storage device. The controller comprises a microprocessor having a pre-determined seek profile and a means for compensating the pre-determined seek profile based on a current operating temperature.

摘要翻译： 公开了关于补偿用于诸如盘驱动器的数据存储设备中的预定义搜索简档以管理设备的内部温度的方法。 所公开的一个实施例涉及确定可以用于补偿温度的预定义搜索曲线的寻道曲线补偿值。 另一实施例是在设备操作期间使用寻道配置文件补偿值来将数据存储设备工作温度维持在低于工作温度阈值的方法。 本发明的另一个实施例可以被认为是用于数据存储设备的控制器。 控制器包括具有预定寻找简档的微处理器和用于基于当前工作温度补偿预定寻找简档的装置。