Repeatable runout compensation using iterative learning control in a disc storage system
    1.
    发明授权
    Repeatable runout compensation using iterative learning control in a disc storage system 有权
    在盘存储系统中使用迭代学习控制可重复的跳动补偿

    公开(公告)号:US06563663B1

    公开(公告)日:2003-05-13

    申请号:US09474277

    申请日:1999-12-29

    IPC分类号: G11B5596

    CPC分类号: G11B5/59627 G11B5/596

    摘要: A disc storage system is provided which includes a servo control loop for compensating for repeatable runout. Repeatable runout is compensated using table entries of the form Comp Value(k+1)=Comp Value(k)+K&PHgr;(z)RRO(k), where K is a learning rate; k is iteration number &PHgr;(z) is a filter and RRO(k) is the repeatable runout error. Further, &rgr;(j&ohgr;)=|1−K&PHgr;(j&ohgr;)/(1+PC(j&ohgr;)|

    摘要翻译: 提供了一种盘存储系统,其包括用于补偿可重复跳动的伺服控制回路。 可重复跳动使用Comp Value(k + 1)= Comp Value(k)+ KPHI(z)RRO(k)形式的表条目进行补偿,其中K是学习速率; k是迭代次数PHI(z)是滤波器,RRO(k)是可重复的跳动误差。 此外,需要满足rho(jomega)= | 1-KPHI(jomega)/(1 + PC(jomega)| <1),其中PC(jomega)是伺服环路的开环频率响应,滤波器可以包括 订单过滤器

    Repeatable runout compensation using a learning algorithm with scheduled parameters
    2.
    发明授权
    Repeatable runout compensation using a learning algorithm with scheduled parameters 有权
    使用具有调度参数的学习算法可重复的跳动补偿

    公开(公告)号:US06437936B1

    公开(公告)日:2002-08-20

    申请号:US09489532

    申请日:2000-01-21

    IPC分类号: G11B5596

    CPC分类号: G11B5/59627

    摘要: A method and apparatus for compensating for written-in repeatable runout in a disc drive is provided. Compensation values are determined through an iterative learning process in which parameters of the learning process such as learning gain, servo loop gain, etc. are functions of the iteration number. The learning process also employs a nominal double integrator model of an actuator of the disc storage system. The learning process is also a function of a zero-phase low-pass filter.

    摘要翻译: 提供了用于补偿盘驱动器中的可写入可重复跳动的方法和装置。 通过迭代学习过程来确定补偿值,其中诸如学习增益,伺服循环增益等学习过程的参数是迭代次数的函数。 学习过程还采用盘存储系统的执行器的标称双积分器模型。 学习过程也是零相位低通滤波器的一个功能。

    TEMPERATURE INDUCED HEAD SKEW
    5.
    发明申请
    TEMPERATURE INDUCED HEAD SKEW 审中-公开
    温度感应头盔

    公开(公告)号:US20120044593A1

    公开(公告)日:2012-02-23

    申请号:US12860585

    申请日:2010-08-20

    IPC分类号: G11B27/36

    摘要: One way to minimize full DC head-skew re-calibrations rendered necessary by changes in storage media drive operating temperature is to compensate for temperature-induced DC head-skew using a known relationship between temperature-induced DC head-skew and storage media operating temperature. More specifically, a first DC head-skew is measured at a first arbitrary temperature of the storage media drive. A second DC head-skew is measured at a second arbitrary temperature of the storage media drive. A DC head-skew correction factor is calculated using the first and second DC head-skews at the first and second arbitrary temperatures. When a multi-head storage media drive is powered-up for operation, a temperature sensor located in the storage media drive assembly measures the current storage media drive temperature. The head-skew correction factor is applied based on the measured temperature to correct the DC head-skew.

    摘要翻译: 通过存储介质驱动器工作温度的变化使必要的全直流磁头偏移重新校准最小化的一种方法是使用温度引起的直流磁头偏移和存储介质工作温度之间的已知关系来补偿温度引起的直流磁头偏移 。 更具体地,在存储介质驱动器的第一任意温度下测量第一DC头偏移。 在存储介质驱动器的第二任意温度下测量第二DC头偏移。 使用第一和第二任意温度下的第一和第二DC头偏差来计算直流偏移校正系数。 当多头存储介质驱动器上电运行时,位于存储介质驱动器组件中的温度传感器测量当前的存储介质驱动器温度。 基于测量的温度应用头偏斜校正因子以校正DC头偏移。

    Data storage medium with optimized servo format
    6.
    发明申请
    Data storage medium with optimized servo format 有权
    具有优化伺服格式的数据存储介质

    公开(公告)号:US20070064325A1

    公开(公告)日:2007-03-22

    申请号:US11231960

    申请日:2005-09-21

    IPC分类号: G11B5/09 G11B5/596

    CPC分类号: G11B5/59655

    摘要: A data storage medium and data storage system with improved efficiency of formatting are provided. One illustrative embodiment of the present invention pertains to a data storage medium. The data storage medium includes a first zone having servo information written with a first frequency, a second zone having servo information written with a second frequency, and a guard band disposed between the first zone and the second zone. The use of different frequencies in different zones contributes to optimizing the properties of the data storage medium, and the guard band contributes to optimizing the usage of the different zones.

    摘要翻译: 提供了提供格式化效率的数据存储介质和数据存储系统。 本发明的一个说明性实施例涉及数据存储介质。 数据存储介质包括具有以第一频率写入的伺服信息的第一区,具有以第二频率写入的伺服信息的第二区和设置在第一区和第二区之间的保护带。 在不同区域中使用不同的频率有助于优化数据存储介质的属性,并且保护带有助于优化不同区域的使用。

    Adaptive anti-windup method and apparatus for disc drive servo control
    9.
    发明授权
    Adaptive anti-windup method and apparatus for disc drive servo control 失效
    盘式驱动伺服控制的自适应防缠结方法及装置

    公开(公告)号:US06465981B2

    公开(公告)日:2002-10-15

    申请号:US09861794

    申请日:2001-05-21

    IPC分类号: G05B1101

    摘要: A method and apparatus are provided for positioning a head over a disc in a disc drive while maintaining servo loop stability. The apparatus includes an actuator-head assembly having a large-scale actuator and a micro-actuator that are both able to move the head over the disc. A saturation adjustment component detects when a micro-actuator controller is producing a micro-actuator control value that will saturate the micro-actuator. Using the micro-actuator control value, the saturation adjustment component generates a saturation error value. An adaptive anti-windup circuit transfers control to the large-scale actuator when the saturation error value is generated by the saturation adjustment component.

    摘要翻译: 提供了一种方法和装置,用于将磁头定位在磁盘驱动器中的磁盘上,同时保持伺服环路的稳定性。 该装置包括具有能够将头部移动到盘上的大型致动器和微致动器的致动器头组件。 饱和度调节组件检测微致动器控制器何时产生将使微致动器饱和的微致动器控制值。 使用微执行器控制值,饱和度调整组件产生饱和误差值。 当饱和度调节组件产生饱和误差值时,自适应防饱和电路将控制传递给大规模执行器。

    Energy-saving control system of rubber-tyred container gantry crane
    10.
    发明申请
    Energy-saving control system of rubber-tyred container gantry crane 审中-公开
    橡胶集装箱门式起重机节能控制系统

    公开(公告)号:US20070176490A1

    公开(公告)日:2007-08-02

    申请号:US11512733

    申请日:2006-08-30

    IPC分类号: B60L1/00

    摘要: An energy-saving control system of rubber-tyred container gantry crane, wherein the diesel engine-electric generator set is controlled to stop when the crane is idle, and a storage device is utilized to supply power to an auxiliary system of the crane, the system comprises: a monitor unit, a charger, a super capacitor, a capacitor monitor module and an inverter. A charge signal is transmitted by the monitor unit when the crane being at an idle state is decided, the charge signal is received by the capacitor monitor module thereby a charge start signal is transmitted to control the charging of the super capacitor by the charger; the diesel engine-electric generator set is controlled to stop or to slow down when the super capacitor has been fully charged being detected by the monitor unit, the super capacitor is used for supplying the power to the auxiliary system of the crane, the direct current of the super capacitor is converted by the inverter to alternating current for supplying the auxiliary system. The energy-saving control system allows RTG to turn off the diesel engine-electric generator set and to implement the operation intermittently, the oil-saving rate of the entire RTG can reach above 40%.

    摘要翻译: 一种橡胶容器龙门起重机的节能控制系统,其中柴油机 - 发电机组在起重机空转时被控制停止,并且使用存储装置向起重机的辅助系统供电, 系统包括:监视器单元,充电器,超级电容器,电容器监视模块和逆变器。 当确定起重机处于怠速状态时,由监控单元发送充电信号,由电容器监视模块接收充电信号,由此发送充电开始信号,以控制充电器对超级电容器的充电; 当监控单元检测出超级电容器充满电时,柴油发电机组被控制停止或减速,超级电容器用于向起重机的辅助系统供电,直流电 的超级电容器由逆变器转换成用于供给辅助系统的交流电。 节能控制系统允许RTG关闭柴油机 - 发电机组并间歇地实施运行,整个RTG的节油率可以达到40%以上。