Diffuser for reducing fluid velocity near disk surfaces in a rotating storage device
    1.
    发明授权
    Diffuser for reducing fluid velocity near disk surfaces in a rotating storage device 失效
    用于降低旋转存储设备中盘表面附近流体速度的扩散器

    公开(公告)号:US06788493B1

    公开(公告)日:2004-09-07

    申请号:US10316417

    申请日:2002-12-10

    IPC分类号: G11B1702

    摘要: A disk drive includes a drive housing, one or more rotating storage disks, each having a storage surface, and a fluid diffuser. The fluid diffuser includes one or more stationary diffuser wings, each having a wing surface positioned near the storage surface. One or more of the diffuser wings can extend between two of the storage disks. The diffuser wing includes a surface deviation that disrupts the fluid flow over the wing surface that is caused by the rotating storage disk. The surface deviation can include an indentation in the wing surface or can extend from the wing surface toward the storage surface. In still another embodiment, the surface deviation includes an aperture that extends through the diffuser wing. Further, the fluid diffuser can include a plurality of surface deviations that are positioned along the wing surface. Further, a portion of the surface deviation can form an angle with the wing surface that is greater than approximately 0 degrees and less than approximately 180 degrees. With this design, the fluid diffuser decreases fluid velocity near the data transducers and/or the rotating storage disks.

    摘要翻译: 磁盘驱动器包括驱动器壳体,一个或多个旋转存储盘,每个具有存储表面和流体扩散器。 流体扩散器包括一个或多个固定的扩散器翼,每个具有靠近储存表面定位的翼表面。 一个或多个扩散器翼可以在两个存储盘之间延伸。 扩散器翼包括破坏由旋转存储盘引起的机翼表面上的流体流动的表面偏差。 表面偏差可以包括机翼表面中的压痕,或者可以从机翼表面向储存表面延伸。 在另一个实施例中,表面偏差包括延伸穿过扩散器翼的孔。 此外,流体扩散器可以包括沿翼面定位的多个表面偏差。 此外,表面偏差的一部分可以与机翼表面形成大于大约0度且小于大约180度的角度。 通过这种设计,流体扩散器减少数据传感器和/或旋转存储盘附近的流体速度。

    Stability margins and error recovery in servo control systems
    2.
    发明授权
    Stability margins and error recovery in servo control systems 失效
    伺服控制系统的稳定裕度和误差恢复

    公开(公告)号:US07602572B2

    公开(公告)日:2009-10-13

    申请号:US11709184

    申请日:2007-02-21

    IPC分类号: G11B5/596 G11B21/02

    CPC分类号: G11B5/59688

    摘要: Adjusting a servo control system includes identifying a gain crossover frequency for the servo control system, generating a sensitivity function for the servo control system, measuring a sensitivity peak in the sensitivity function, comparing a frequency of the sensitivity peak to the gain crossover frequency, and adjusting the servo control system in response to the comparison of the frequency of the sensitivity peak to the gain crossover frequency.

    摘要翻译: 调整伺服控制系统包括识别伺服控制系统的增益交叉频率,产生伺服控制系统的灵敏度功能,测量灵敏度函数中的灵敏度峰值,将灵敏度峰值的频率与增益交叉频率进行比较,以及 响应于灵敏度峰值的频率与增益交叉频率的比较来调整伺服控制系统。

    High-order hybrid actuator controller
    3.
    发明授权
    High-order hybrid actuator controller 有权
    高阶混合执行器控制器

    公开(公告)号:US07489472B2

    公开(公告)日:2009-02-10

    申请号:US11657161

    申请日:2007-01-24

    IPC分类号: G11B5/596

    CPC分类号: G11B5/59616 G11B5/5521

    摘要: A method of providing a control output by selecting a controller to an actuator is discussed. A first controller having an estimator-compensator architecture is selected if the actuator is in a settle stage. A second controller having an architecture other than that of the first controller is selected when the actuator is in a track follow stage. The control output is provided from the selected controller to the actuator. The control output is indicative of the control signal.

    摘要翻译: 讨论了通过向致动器选择控制器来提供控制输出的方法。 如果执行器处于结算阶段,则选择具有估计器 - 补偿器架构的第一控制器。 当致动器处于跟踪阶段时,选择具有不同于第一控制器的结构的第二控制器。 控制输出从所选择的控制器提供给致动器。 控制输出表示控制信号。

    High-order hybrid actuator controller
    4.
    发明申请
    High-order hybrid actuator controller 有权
    高阶混合执行器控制器

    公开(公告)号:US20080174900A1

    公开(公告)日:2008-07-24

    申请号:US11657161

    申请日:2007-01-24

    IPC分类号: G11B15/18

    CPC分类号: G11B5/59616 G11B5/5521

    摘要: A method of providing a control output by selecting a controller to an actuator is discussed. A first controller having an estimator-compensator architecture is selected if the actuator is in a settle stage. A second controller having an architecture other than that of the first controller is selected when the actuator is in a track follow stage. The control output is provided from the selected controller to the actuator. The control output is indicative of the control signal.

    摘要翻译: 讨论了通过向致动器选择控制器来提供控制输出的方法。 如果执行器处于结算阶段,则选择具有估计器 - 补偿器架构的第一控制器。 当致动器处于跟踪阶段时,选择具有不同于第一控制器的结构的第二控制器。 控制输出从所选择的控制器提供给致动器。 控制输出表示控制信号。

    Method of making branched polysilanes
    5.
    发明申请
    Method of making branched polysilanes 审中-公开
    制备支化聚硅烷的方法

    公开(公告)号:US20070167596A1

    公开(公告)日:2007-07-19

    申请号:US11578630

    申请日:2005-05-10

    IPC分类号: C08G77/00

    CPC分类号: C08G77/60

    摘要: In a first method, branched polysilanes are prepared via a Wurtz-type coupling reaction by reacting a mixture of a dihalosilanes and a trihalosilanes with an alkali metal coupling agent in an organic liquid medium. The reaction mixture is free of tetrahalosilanes. The branched polysilanes are recovered from the reaction mixture. In a second method, capped-branched polysilanes are prepared via the same Wurtz-type coupling reaction noted above, with the addition of a capping agent to the reaction mixture. The capping agent can be a monohalosilane, monoalkoxysilane, or trialkoxysilane. Capped-branched polysilanes are re-covered from the reaction mixture. The branched polysilanes are soluble in organic liquid mediums.

    摘要翻译: 在第一种方法中,支链聚硅烷通过Wurtz型偶联反应通过使二卤硅烷和三卤代硅烷的混合物与碱金属偶联剂在有机液体介质中反应来制备。 反应混合物不含四卤代硅烷。 从反应混合物中回收支化聚硅烷。 在第二种方法中,通过与上述相同的Wurtz型偶联反应制备封端支化的聚硅烷,向反应混合物中加入封端剂。 封端剂可以是单卤硅烷,单烷氧基硅烷或三烷氧基硅烷。 从反应混合物中重新覆盖带支链的聚硅烷。 支化聚硅烷可溶于有机液体介质中。

    Method of Making Branched Polysilane Copolymers
    6.
    发明申请
    Method of Making Branched Polysilane Copolymers 审中-公开
    支链聚硅烷共聚物的制备方法

    公开(公告)号:US20090124781A1

    公开(公告)日:2009-05-14

    申请号:US11884611

    申请日:2006-03-29

    IPC分类号: C08G77/00

    CPC分类号: C08G77/60

    摘要: Branched polysilane copolymers are prepared via a Wurtz-type coupling reaction by reacting a mixture of two different dihalosilanes and a single trihalosilane with an alkali metal coupling agent in an organic liquid medium. The branched polysilane copolymers are recovered from the reaction mixture. Capped branched polysilane copolymers are prepared via the same Wurtz-type coupling reaction with addition of a capping agent to the reaction mixture. The capping agent is a monohalosilane, monoalkoxysilane, dialkoxysilane, or trialkoxysilane. The branched polysilane copolymers and the capped branched polysilane copolymers are soluble in organic liquid medium.

    摘要翻译: 支化聚硅烷共聚物是通过Wurtz型偶合反应制备的,通过使两种不同的二卤代硅烷和单一的三卤代硅烷的混合物与碱金属偶联剂在有机液体介质中反应。 从反应混合物中回收支化聚硅烷共聚物。 通过在反应混合物中加入封端剂通过相同的Wurtz型偶联反应制备包覆的支化聚硅烷共聚物。 封端剂是单卤硅烷,单烷氧基硅烷,二烷氧基硅烷或三烷氧基硅烷。 支化聚硅烷共聚物和封端的支化聚硅烷共聚物可溶于有机液体介质。

    Stability Margins and error recovery in servo control systems
    7.
    发明申请
    Stability Margins and error recovery in servo control systems 失效
    伺服控制系统的稳定性裕度和误差恢复

    公开(公告)号:US20070268797A1

    公开(公告)日:2007-11-22

    申请号:US11709184

    申请日:2007-02-21

    IPC分类号: G11B7/00

    CPC分类号: G11B5/59688

    摘要: Adjusting a servo control system includes identifying a gain crossover frequency for the servo control system, generating a sensitivity function for the servo control system, measuring a sensitivity peak in the sensitivity function, comparing a frequency of the sensitivity peak to the gain crossover frequency, and adjusting the servo control system in response to the comparison of the frequency of the sensitivity peak to the gain crossover frequency.

    摘要翻译: 调整伺服控制系统包括识别伺服控制系统的增益交叉频率,产生伺服控制系统的灵敏度功能,测量灵敏度函数中的灵敏度峰值,将灵敏度峰值的频率与增益交叉频率进行比较,以及 响应于灵敏度峰值的频率与增益交叉频率的比较来调整伺服控制系统。