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16 条记录 (耗时 0.021 秒)

    Electrical phase compensation in BEMF spindle motor control
    1.
    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。

    Head-disc assembly with embedded product identification code
    7.
    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。

    Head polarity detection algorithm and apparatus
    8.
    发明授权
    Head polarity detection algorithm and apparatus 失效
    磁头极性检测算法和装置

    公开(公告)号：US07133227B2

    公开(公告)日：2006-11-07

    申请号：US10761475

    申请日：2004-01-21

    申请人： TaiVie Chiang ,  WingKong Chiang ,  KianKeong Ooi ,  KianSoon Yeo ,  MingZhong Ding

    发明人： TaiVie Chiang ,  WingKong Chiang ,  KianKeong Ooi ,  KianSoon Yeo ,  MingZhong Ding

    IPC分类号： G11B27/36

    CPC分类号： G11B27/36 ,  G11B5/455 ,  G11B20/10009 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2220/20

    摘要： A method of determining and monitoring head polarity of data heads comprises performing a head polarity detection routine. The head polarity detection routine comprises the step of setting a read gate period duration to a first value. The routine also comprises searching for a good address mark signal during a first read gate period with a channel polarity set to a first polarity. The routine further comprises identifying a polarity of a data head based upon the channel polarity when the good address mark is detected.

    摘要翻译： 确定和监视数据头的磁头极性的方法包括执行磁头极性检测程序。 磁头极性检测程序包括将读门限周期设定为第一值的步骤。 该例程还包括在第一读取门限周期期间搜索良好的地址标志信号，其中通道极性被设置为第一极性。 该例程还包括当检测到良好地址标记时，基于信道极性识别数据头的极性。

    Electrical phase compensation in BEMF spindle motor control
    9.
    发明申请
    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：US20060097681A1

    公开(公告)日：2006-05-11

    申请号：US11312052

    申请日：2005-12-20

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

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

    IPC分类号： G05B11/01

    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。