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16 条记录 (耗时 0.021 秒)

    Method and apparatus for determining high order polynomials for linearization of position signals
    1.
    发明授权
    Method and apparatus for determining high order polynomials for linearization of position signals 有权
    用于确定位置信号线性化的高阶多项式的方法和装置

    公开(公告)号：US06674607B2

    公开(公告)日：2004-01-06

    申请号：US09873752

    申请日：2001-06-04

    申请人： KianKeong Ooi ,  WingKong Chiang ,  Lincheng Xiu ,  SiokYin Tan ,  YangQuan Chen

    发明人： KianKeong Ooi ,  WingKong Chiang ,  Lincheng Xiu ,  SiokYin Tan ,  YangQuan Chen

    IPC分类号： G11B5596

    CPC分类号： G11B5/59622 ,  G11B5/59627

    摘要： A method and storage device are provided for initializing a polynomial linearizer in the storage device. The linearizer is initialized by identifying the coefficients of the linearizer polynomial. To reduce the computational intensity of this process, orthogonal-type coefficients for at least two orthogonal polynomials are identified, where the linearizer polynomial is formed as the sum of the orthogonal polynomials. The orthogonal-type coefficients are then combined to identify linearizer coefficients for the linearizer polynomial.

    摘要翻译： 提供一种用于在存储装置中初始化多项式线性化装置的方法和存储装置。 通过识别线性化多项式的系数来初始化线性化器。 为了减少该过程的计算强度，识别用于至少两个正交多项式的正交类型系数，其中线性化多项式形成为正交多项式的和。 然后将正交型系数组合以识别线性化多项式的线性化系数。

    Motor control circuit with adaptive controller path selection for different load conditions
    3.
    发明授权
    Motor control circuit with adaptive controller path selection for different load conditions 有权
    电机控制电路，具有自适应控制器路径选择，适用于不同的负载条件

    公开(公告)号：US06744587B2

    公开(公告)日：2004-06-01

    申请号：US10035081

    申请日：2001-12-21

    申请人： Djunaedy Chandra Ang ,  KianKeong Ooi ,  Liang Shen ,  WingKong Chiang

    发明人： Djunaedy Chandra Ang ,  KianKeong Ooi ,  Liang Shen ,  WingKong Chiang

    IPC分类号： G11B1518

    CPC分类号： G11B19/28

    摘要： A motor control circuit for controlling rotation of a motor includes parallel first and second controller paths (gears). Each path includes a proportional and integral (PI) controller and a digital to analog converter (DAC). The DACs operate over different dynamic ranges (gains). The respective PI controllers have different control parameters to provide a common frequency response. The first controller path is used to output motor control signals to control the application of drive current to the motor. The circuit switches to the second controller path once the first controller path operates within a selected tolerance of a minimum or maximum level of the first dynamic range. The final state of the first PI controller is used to configure the initial state of the second PI controller to eliminate transients. The use of different gears allows the circuit to adaptively accommodate large variations in motor current and spindle motor configurations.

    摘要翻译： 用于控制电动机的旋转的电动机控制电路包括平行的第一和第二控制器路径（齿轮）。 每个路径包括比例和积分（PI）控制器和数模转换器（DAC）。 DAC在不同的动态范围（增益）下运行。 相应的PI控制器具有不同的控制参数以提供共同的频率响应。 第一个控制器路径用于输出电机控制信号，以控制对电机的驱动电流的应用。 一旦第一控制器路径在所选择的第一动态范围的最小或最大水平的公差内运行，则电路切换到第二控制器路径。 第一个PI控制器的最终状态用于配置第二个PI控制器的初始状态，以消除瞬变。 使用不同的齿轮允许电路自适应地适应电机电流和主轴电机配置的大变化。

    Electrical phase compensation in BEMF spindle motor control
    5.
    发明授权
    Electrical phase compensation in BEMF spindle motor control 有权
    BEMF主轴电机控制中的电相补偿

    公开(公告)号：US07170249B2

    公开(公告)日：2007-01-30

    申请号：US11312052

    申请日：2005-12-20

    申请人： June Christian Ang ,  KianKeong Ooi ,  WingKong Chiang ,  MingZhong Ding

    发明人： June Christian Ang ,  KianKeong Ooi ,  WingKong Chiang ,  MingZhong Ding

    IPC分类号： G05B11/01 ,  G11B7/00

    CPC分类号： G11B19/28 ,  H02P6/182

    摘要： A method and apparatus for compensating for the asymmetrical phases of a spindle motor in a disc drive are provided. With the apparatus and method, compensation values are learned by sampling speed data during a period of operation of the disc drive where the speed is stable and only one control operation is performed per revolution of the disc. The sampled speed data is used to generate the compensation values for each of the phases of the spindle motor. The compensation values are stored in a compensation mechanism which is used by the spindle motor speed controller to provide compensation for the asymmetrical phases of the spindle motor. During Normal operation, the actual speed output of the spindle motor is measured and is subtracted from a reference speed to generate a difference speed value. Based on the corresponding electrical phase, the correct compensation value is fetched and is subtracted from the difference speed value to obtain a compensated difference speed value. A control signal based on this compensated difference speed value is generated and provided to the spindle motor to thereby control the output speed of the spindle motor.

    摘要翻译： 提供了用于补偿磁盘驱动器中的主轴电动机的非对称相位的方法和装置。 利用该装置和方法，在速度稳定的盘驱动器的操作周期期间通过采样速度数据来学习补偿值，并且每一周只执行一次控制操作。 采样速度数据用于产生主轴电机各相的补偿值。 补偿值存储在主轴电机转速控制器使用的补偿机构中，为主轴电机的非对称相提供补偿。 在正常运行期间，主轴电机的实际速度输出被测量，并从参考速度中减去以产生差速值。 基于对应的电相，取出正确的补偿值，并从差速值中减去以获得补偿差速值。 产生基于该补偿差速值的控制信号，并提供给主轴电动机，从而控制主轴电动机的输出速度。

    Track closure error cancellation for a disc drive
    8.
    发明授权
    Track closure error cancellation for a disc drive 失效
    磁盘驱动器的跟踪闭合错误消除

    公开(公告)号：US06882497B2

    公开(公告)日：2005-04-19

    申请号：US10090875

    申请日：2002-03-04

    申请人： ShuangQuan Min ,  KianKeong Ooi ,  WeiSung Lee ,  WingKong Chiang

    发明人： ShuangQuan Min ,  KianKeong Ooi ,  WeiSung Lee ,  WingKong Chiang

    IPC分类号： G11B5/596

    CPC分类号： G11B5/59633 ,  G11B5/59655

    摘要： Track closure errors written into servo sectors of an information track of a disc of a disc drive are resolved from a position control signal generated by a servo control circuit of a data storage device by steps comprising: determining a value for the track closure error from a position error signal, establishing a track closure profile based on the value of the track closure error, and injecting the track profile into the servo control circuit as a feed forward compensation input for the position error signal to resolve the track closure error from the position control signal.

    摘要翻译： 通过以下步骤由数据存储装置的伺服控制电路产生的位置控制信号来解析写入盘驱动器的盘的信息轨道的伺服扇区的跟踪闭合误差，包括：从一个 位置误差信号，基于轨道闭合误差的值建立​​轨道闭合轮廓，以及将轨道轮廓注入伺服控制电路作为用于位置误差信号的前馈补偿输入，以从位置控制中解决轨道闭合误差 信号。

    Head-disc assembly with embedded product identification code
    10.
    发明授权
    Head-disc assembly with embedded product identification code 失效
    头盘组件带有嵌入式产品识别码

    公开(公告)号：US06731444B2

    公开(公告)日：2004-05-04

    申请号：US09872945

    申请日：2001-06-01

    申请人： JackMing Teng ,  BaoHong Liu ,  KianKeong Ooi ,  WingKong Chiang ,  Mingzhong Ding ,  BengWee Quak ,  Djunaedy Chandra Ang

    发明人： JackMing Teng ,  BaoHong Liu ,  KianKeong Ooi ,  WingKong Chiang ,  Mingzhong Ding ,  BengWee Quak ,  Djunaedy Chandra Ang

    IPC分类号： G11B509

    CPC分类号： G11B27/3027 ,  G11B5/012 ,  G11B2220/20

    摘要： An apparatus and method for writing a product information code (PIC) to a head-disc assembly (HDA) of a disc drive data handling system to facilitate subsequent identification of the HDA. The PIC is configured as a sequence of n multi-bit encoded words. Servo data are written to a disc of the HDA as a number of p angularly spaced apart servo data fields, the servo data used by a servo control circuit to effect head positional control. The n encoded words are distributed across a subset n of the p servo data fields so that the n encoded words replace at least a portion of the servo data in the n servo data fields. Preferably, the n encoded words are written to Gray code (track address) fields of the n servo data fields and are provided with error detection and correction capabilities.

    摘要翻译： 一种用于将产品信息代码（PIC）写入到盘驱动器数据处理系统的头盘组件（HDA）中以便于随后识别HDA的装置和方法。 PIC被配置为n个多位编码字的序列。 将伺服数据作为多个p个角度间隔开的伺服数据字段写入HDA的盘，伺服数据由伺服控制电路用于实现头部位置控制。 n个编码字分布在p个伺服数据字段的子集n上，使得n个编码字替代n个伺服数据字段中的伺服数据的至少一部分。 优选地，将n个编码字写入n个伺服数据字段的格雷码（轨道地址）字段，并提供错误检测和校正能力。