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    • 3. 发明授权
    • Closed loop lubrication system for moving magnetic media
    • 用于移动磁性介质的闭环润滑系统
    • US06914739B2
    • 2005-07-05
    • US10295442
    • 2002-11-14
    • Norbert A. FelissDonald Ray GillisThomas A. GregorySylvia Lui Lee
    • Norbert A. FelissDonald Ray GillisThomas A. GregorySylvia Lui Lee
    • G11B5/00G11B5/012G11B23/50G11B33/14G11B15/18
    • G11B5/012G11B5/00G11B23/507G11B33/148G11B2005/001
    • A data storage system is described with a system for controlling the amount of lubricant being dispensed from the reservoir using a feedback loop that includes at least one sensor output for a physical parameter inside device such as temperature, humidity and fly-height. In one embodiment the lubricant reservoir housing is equipped with a movable shutter over an aperture in the lubricant reservoir housing. The area of the aperture through which the lubricant vapor can pass is controlled by moving the shutter. In another embodiment the lubricant reservoir housing is supplied with a lubricant diffusion packet such as an effusion cell or diffusion tube containing liquid lubricant. An energy source for the lubricant diffusion packet allows the temperature of the lubricant and, therefore, its vapor pressure, to be increased when the need for additional lubricant is sensed. In a preferred embodiment the output from a Quartz Crystal Microbalance (QCM) with an overcoat similar to that used on a disk is used to measure the degree of lubricant saturation inside the drive by sensing the change in the frequency of a crystal oscillator due to the lubricant adsorbing on a surface of the QCM.
    • 使用一个系统来描述数据存储系统,该系统使用反馈回路来控制从贮存器分配的润滑剂的量,所述反馈回路包括至少一个用于诸如温度,湿度和飞行高度的设备内的物理参数的传感器输出。 在一个实施例中,润滑剂储存器壳体在润滑剂储存器壳体中的孔的上方配备有活动快门。 通过移动快门来控制润滑剂蒸汽可以通过的孔的面积。 在另一个实施例中,润滑剂储存器壳体被供应润滑剂扩散包,例如含有液体润滑剂的渗出池或扩散管。 润滑剂扩散包的能量源允许当检测到需要额外的润滑剂时,润滑剂的温度以及因此的蒸汽压力增加。 在优选实施例中,具有类似于盘上使用的外罩的石英晶体微量天平(QCM)的输出用于通过感测晶体振荡器的频率的变化来测量驱动器内部的润滑剂饱和度,这是由于 润滑剂吸附在QCM的表面上。
    • 9. 发明授权
    • Glide height test signal processor and method using increased high
frequency components
    • 滑行高度测试信号处理器和方法使用增加的高频分量
    • US6092412A
    • 2000-07-25
    • US72946
    • 1998-05-05
    • Karl Arthur FlechsigDonald Edward HorneSylvia Lui LeeWalter Gerald Woodworth
    • Karl Arthur FlechsigDonald Edward HorneSylvia Lui LeeWalter Gerald Woodworth
    • G11B5/82G11B19/04G11B33/10B23K26/00
    • G11B19/04G11B33/10G11B5/82
    • A glide height test signal processor and method using increased high frequency components is disclosed. The processor is more sensitive to smaller asperities, maintains the positive characteristics of being monotonic and can be easily calibrated. The system includes a circuit for converting asperity contact to an electrical signal, a first bandpass circuit coupled to the first circuit, the first bandpass circuit having a first amplifier for amplifying the electrical signal by a first gain to generate a first amplified signal and a first filter for filtering the first amplified signal at a high frequency to generate a first filtered signal, wherein the first gain is selected for detection of asperities having a diameter of less than or equal to five microns and a processing circuit, coupled to the first bandpass circuit, for processing the first filtered signal to generate an indication of contact with an asperity having a diameter of less than or equal to five microns. A second bandpass circuit may be coupled to the first circuit, wherein the second bandpass circuit has a second amplifier for amplifying the electrical signal by a second gain to generate a second amplified signal and a second filter for filtering the second amplified signal at a low frequency to generate a second filtered signal, wherein the ratio of the first gain and the second gain is substantially at least thirty to one.
    • 公开了一种使用增加的高频分量的滑行高度测试信号处理器和方法。 处理器对较小的凹凸更敏感,保持单调的正面特征,并且可以轻松校准。 该系统包括用于将粗糙度接触转换为电信号的电路,耦合到第一电路的第一带通电路,第一带通电路具有用于通过第一增益放大电信号以产生第一放大信号的第一放大器和第一 滤波器,用于以高频率对第一放大信号进行滤波以产生第一滤波信号,其中选择第一增益用于检测直径小于或等于5微米的粗糙度,以及耦合到第一带通电路的处理电路 ,用于处理第一滤波信号以产生与直径小于或等于5微米的粗糙度接触的指示。 第二带通电路可以耦合到第一电路,其中第二带通电路具有用于通过第二增益放大电信号的第二放大器以产生第二放大信号,以及用于以低频率滤波第二放大信号的第二滤波器 以产生第二滤波信号,其中第一增益和第二增益的比率基本上至少为三十比一。