-
1.发明授权Method and apparatus for controlling write operations of a data storage system subjected to a shock event 有权用于控制遭受冲击事件的数据存储系统的写入操作的方法和装置公开(公告)号：US06429990B2
公开(公告)日：2002-08-06
申请号：US09428828
申请日：1999-10-28
IPC分类号： G11B1904
CPC分类号： G11B19/04
摘要： A method and apparatus for controlling write operations for a data storage system during and after a shock event is disclosed. A shock sensor measures the magnitude of a shock event and compares the magnitude of the shock event to at least two predetermined thresholds. Write operations are then inhibited based upon the comparison of the magnitude of the shock event and the at least two predetermined thresholds. When the shock event meets a first upper threshold, the write is inhibited until the write is requalified. The write is executed if the measured shock event does not meet a second lower threshold and the write is paused for a predetermined time period when the measured shock event meets the second lower threshold but does not meet the first upper threshold.
摘要翻译： 公开了一种用于在冲击事件期间和之后控制数据存储系统的写入操作的方法和装置。 冲击传感器测量冲击事件的大小并将冲击事件的大小与至少两个预定阈值进行比较。 然后基于冲击事件的大小与至少两个预定阈值的比较来禁止写入操作。 当冲击事件满足第一个上限阈值时，写入被禁止，直到写入被重新验证。 如果测量的冲击事件不满足第二较低阈值并且当测量的冲击事件满足第二较低阈值但不满足第一上限阈值时，写入暂停预定时间段，则执行写入。
-
2.发明授权公开(公告)号：US06577463B1
公开(公告)日：2003-06-10
申请号：US09561253
申请日：2000-04-27
IPC分类号： G11B509
CPC分类号： G11B5/59655
摘要： A system and method for precompensating for tangential misalignment in a direct access storage device adjusts a SID timing window individually for every track or surface of the direct access storage device. The system and method generate a calculation of the tangential misalignment and adjust, in accordance with the calculation of tangential misalignment, a timing window during which the transducer head reads the information located on the storage surface. The calculation of tangential misalignment may be the result of a direct measurement of the tangential misalignment, or may be converted from radial misalignment data. The adjustment of the timing window may comprise opening the timing window an amount depending upon the degree of misalignment of each track, and may comprise shifting the window in time either forward or backward depending upon the nature of the calculated misalignment.
摘要翻译： 在直接存取存储设备中用于预补偿切向不对准的系统和方法针对直接存取存储设备的每个轨迹或表面单独地调整SID定时窗口。 该系统和方法产生切向未对准的计算，并且根据切线未对准的计算调整换能器头读取位于存储表面上的信息的定时窗口。 切向不对准的计算可能是直接测量切线未对准的结果，或者可以从径向未对准数据转换。 定时窗口的调节可以包括根据每个轨道的未对准程度来打开定时窗口，并且可以包括根据所计算的未对准的性质向前或向后移动窗口。
-
3.发明授权Settle time estimator feedback for rotational position reordering in data storage devices 失效数据存储设备中旋转位置重新排序的定时估计器反馈公开(公告)号：US06426843B1
公开(公告)日：2002-07-30
申请号：US09300070
申请日：1999-04-27
IPC分类号： G11B2102
CPC分类号： G11B21/02 , G11B5/5521
摘要： A method, apparatus, and article of manufacture for rotational position reordering of queued commands in a data storage device based on settle time estimator feedback. An initial settle time estimation is programmed into a servo controller for the data storage device. As data operations are performed in the data storage device, an actual settle time is measured for the data operations, generally through the use of a timer in the servo controller. The settle time estimation is then modified based on the actual settle time and the data operations are reordered or scheduled based on the settle time estimation. Specifically, the settle time estimation is adjusted based on a success rate for the data operations, wherein the success rate comprises a comparison of the actual settle time versus the settle time estimation. A first delta value is subtracted from the settle time estimation when the settle time estimation is greater than the actual settle time, and a second delta value is added to the settle time estimation when the settle time estimation is less than the actual settle time. Different settle time estimations may be used depending on various characteristics, i.e., settle time estimations differ for different transducers in the data storage device, according to a type of seek operation, according to a seek direction, according to a track location, and according to seek length.
摘要翻译： 基于结算时间估计器反馈的数据存储装置中的排队命令的旋转位置重新排序的方法，装置和制品。 初始定时估计被编程到用于数据存储设备的伺服控制器中。 由于在数据存储装置中执行数据操作，因此通常通过在伺服控制器中使用定时器来测量数据操作的实际结算时间。 然后，基于实际的结算时间来修改定时时间估计，并且基于确定时间估计重新排序或调度数据操作。 具体地，基于数据操作的成功率来调整结算时间估计，其中成功率包括实际结算时间与结算时间估计的比较。 当结算时间估计大于实际结算时间时，从结算时间估计中减去第一Δ值，并且当结算时间估计小于实际结算时间时，将第二增量值加到结算时间估计中。 可以根据各种特征使用不同的结算时间估计，即，根据搜索方式，根据搜索方向，根据轨道位置，并且根据搜索方式，根据搜索操作的类型，数据存储设备中的不同换能器的安息时间估计不同 寻求长度。
-
公开(公告)号：US06342985B1
公开(公告)日：2002-01-29
申请号：US09153504
申请日：1998-09-15
IPC分类号： G11B2102
CPC分类号： G11B21/083
摘要： A system and method for compensation for variation in a voice coil motor's torque factor due to changes in temperature to improve the seek performance of a disk drive. The method uses the numerical relationship between change in torque factor and change in temperature (G) for the voice coil motor, combined with torque factor KT and temperature at/near the voice coil motor measured at a first time (for example during the initial start-up of the disk drive during the automatic recalibrations that is performed during a start-up, (KT RECAL) and (TRECAL) respectively). These KRECAL and TRECAL can be stored in memory. At some later predetermined interval or event, the temperature at or near the voice coil motor is again measured (TEVENT). From these known temperature and torque factor parameters, in combination with the known relationship between temperature and torque factor for the voice coil motor, the KT at the future time/event (KT EVENT) can be calculated. This new KT EVENT has been adjusted for temperature and can now be used in the seek algorithm in place of the original KT RECAL which results in more optimal seek performance.
摘要翻译： 一种用于补偿由于温度变化引起的音圈电机扭矩因素变化的系统和方法，以改善磁盘驱动器的寻道性能。 该方法使用音圈电机的转矩因数变化和温度变化（G）之间的数值关系，结合扭矩因子KT和第一次测量的音圈电机/附近的温度（例如初始开始时） 在启动期间（KT RECAL）和（TRECAL）期间执行的自动重新校准期间的磁盘驱动器的-up。 这些KRECAL和TRECAL可以存储在内存中。 在稍后的预定间隔或事件处，再次测量音圈电机处或附近的温度（TEVENT）。 根据这些已知的温度和转矩因数参数，结合音圈电机的温度和转矩系数之间已知的关系，可以计算未来时间/事件（KT EVENT）下的KT。 这个新的KT EVENT已经调整了温度，现在可以在寻找算法中使用，代替原始的KT RECAL，这样可以获得更优化的搜索性能。
-
5.发明授权System and method for determining when hard disk drive power amplifier is saturated 失效确定何时硬盘驱动器功率放大器饱和的系统和方法
公开(公告)号：US6088188A
公开(公告)日：2000-07-11
申请号：US798529
申请日：1997-02-10
CPC分类号： G11B21/083 , G11B5/5534 , G11B5/5547
摘要： In a hard disk drive, a head actuator periodically is caused to undertake a calibration seek such that the power amplifier that energizes the head actuator is saturated. The predicted distance moved by the head during the calibration seek is compared to the actual distance moved, and the ratio of the two distances is then used to determine the saturation current of the power amplifier. For a subsequent seek, if the saturation current is less than the current requested for the subsequent seek, the saturation current is input into the head position prediction model. Otherwise, the requested current is used.
摘要翻译： 在硬盘驱动器中，周期性地引导头致动器进行校准寻求，使得激励头致动器的功率放大器饱和。 将在校准寻找期间头部移动的预测距离与移动的实际距离进行比较，然后使用两个距离的比率来确定功率放大器的饱和电流。 对于随后的寻找，如果饱和电流小于随后寻找所请求的电流，则饱和电流被输入到头部位置预测模型中。 否则，使用请求的电流。
-
6.发明授权Servo-free velocity estimator for coil driven actuator arm in a data storage drive 失效数据存储驱动器中线圈驱动执行器臂的无伺服速度估计器
公开(公告)号：US5963393A
公开(公告)日：1999-10-05
申请号：US32286
申请日：1998-02-26
CPC分类号： G11B5/5547 , G11B21/081 , G11B21/083 , G11B5/5534 , G11B33/10
摘要： A system and method for determining the velocity and/or position of a coil driven actuator arm without the aid of servo signals. A sample-hold unit is used to measure no-motion coil voltage in the voice motor coil while applying a predetermined coil current. Then, while the same magnitude (opposite direction) current is applied to move the actuator arm, the coil voltage is measured. The coil voltage is reduced by the measured no-motion coil voltage, producing a measurement of back-emf. The back-emf may be amplified by a predetermined factor to yield an estimation of velocity, and this amount may be integrated to provide a gauge of relative actuator arm position.
摘要翻译： 用于通过伺服信号确定线圈驱动的致动器臂的速度和/或位置的系统和方法。 采样保持单元用于在施加预定的线圈电流的同时测量语音电机线圈中的不动作线圈电压。 然后，当施加相同的幅度（相反方向）电流来移动致动器臂时，测量线圈电压。 线圈电压通过测量的无运动线圈电压降低，产生反电动势的测量。 反电动势可以通过预定的因子放大以产生速度的估计，并且该量可以被积分以提供相对致动器臂位置的量规。
-
7.发明授权Employing off-track capability in data access operations in a direct access storage device 失效在直接访问存储设备中采用数据访问操作的偏离能力公开(公告)号：US06788489B1
公开(公告)日：2004-09-07
申请号：US09567473
申请日：2000-05-09
IPC分类号： G11B5596
CPC分类号： G11B21/083 , G11B5/5547
摘要： A direct access storage device (DASD) employs head-specific off-track read capability (OTRC) in data access operations. A method of operation of the DASD involves providing within the DASD a rotating data storage medium and one or more read heads positionable for interaction with the data storage medium. The OTRC particular to each read head is determined and then applied in accessing data from the data storage medium. One manner of applying the OTRC to access data is to use the OTRC in scheduling random queued seeks. The OTRC for a head is referenced within buffer memory and applied to determine which target data can be accessed most quickly. The seeks are scheduled accordingly. A single table with a nominal seek time can be used for all heads, with a custom adder being added for each particular head. The OTRC can also be applied to alter the seek algorithm. That is, a given seek operation can be conducted more aggressively where the head involved has more favorable OTRC and less aggressively where a head with a less favorable OTRC is involved.
摘要翻译： 直接访问存储设备（DASD）在数据访问操作中使用头专用的远程读取能力（OTRC）。 DASD的操作方法涉及在DASD内提供旋转数据存储介质和可定位用于与数据存储介质交互的一个或多个读取头。 确定每个读取头特定的OTRC，然后应用于从数据存储介质访问数据。 应用OTRC访问数据的一种方式是使用OTRC调度随机排队的查询。 用于头的OTRC在缓冲存储器中引用，并应用于确定哪些目标数据可以被最快地访问。 寻求的安排是相应的。 具有标称搜索时间的单个表格可以用于所有头部，并为每个特定头部添加一个自定义加法器。 OTRC也可以应用于改变搜索算法。 也就是说，如果涉及的头部具有更好的OTRC，并且在涉及不太有利的OTRC的头部的情况下，可以更积极地进行给定的寻求操作。
-
8.发明授权Adaptive servo estimator and compensator for coil and carriage deformation in voice coil motor driven hard disk drive 失效音圈电机驱动硬盘驱动器中线圈和滑架变形的自适应伺服估计器和补偿器公开(公告)号：US06594106B1
公开(公告)日：2003-07-15
申请号：US09429865
申请日：1999-10-29
IPC分类号： G11B5596
CPC分类号： G11B5/5556
摘要： A system and method for adaptively compensating for real-time variations in mechanical dynamics of a head-positioning assembly during track follow and seek operations. The head-positioning assembly includes a voice coil actuator that positions a read/write head utilizing a coil and carriage in conformity with an actuator control signal. Variations in resonant mode characteristics are anticipated in real-time in accordance with measured temperature variations. These parametric variations are translated in real-time by a state space model to determine a secondary velocity and displacement of the read/write head during track follow and seek operations. In response to this secondary velocity and displacement determination, the actuator control signal is dynamically adjusted to compensate for the determined secondary head velocity and displacement, thereby improving head positioning accuracy and increasing servo bandwidth.
摘要翻译： 一种系统和方法，用于在轨道跟踪和寻道操作期间自动补偿头部定位组件的机械动力学实时变化。 头部定位组件包括音圈致动器，该音圈致动器使用符合致动器控制信号的线圈和滑架来定位读/写头。 根据测量的温度变化，可以实时预测谐振模式特性的变化。 通过状态空间模型实时地转换这些参数变化，以确定跟踪跟踪操作期间读/写头的二次速度和位移。 响应于该二次速度和位移确定，致动器控制信号被动态地调节以补偿确定的次级头部速度和位移，从而提高头部定位精度并增加伺服带宽。
-
9.发明授权Linearity compensation for a position error signal based on repeatable and non-repeatable run out in a disk drive 有权基于磁盘驱动器中可重复且不可重复的位置误差信号的线性补偿公开(公告)号：US06421198B1
公开(公告)日：2002-07-16
申请号：US09300026
申请日：1999-04-27
IPC分类号： G11B5596
CPC分类号： G11B5/59627
摘要： Linearity compensation is provided for a position error signal based on repeatable and non-repeatable run out in a data storage device. The run out is measured on a track of the data storage device at a plurality of points, such as a track center and one or more points offset from the track center. The run out is typically measured using either an unstitched primary position error signal or an unstitched quadrature position error signal. The offsets are usually stitch points for the position error signal. A component of the run out is extracted at the points, wherein the component generally comprises one or more characteristics of the run out, such as a frequency, a set of frequencies, a root mean square, or some other characteristic of the run out. The linearizing equation to be used for the position error signal is identified based on the measured run out and generally comprises a polynomial function. The coefficients of the linearizing equation are adjusted so that the run out and the component of the run out are substantially similar at the points. These steps are repeated until a satisfactory fit is achieved in the linearizing equation. Once a satisfactory fit is achieved, the coefficients for the linearizing equation are stored in the data storage device, so that they can be accessed by a servo controller during operation of the data storage device. The servo controller uses the linearizing equation to generate a linearized position error signal that is used to improve a track following capability of the data storage device.
摘要翻译： 基于在数据存储装置中可重复且不可重复的耗尽的位置误差信号提供线性补偿。 在轨道中心和偏离轨道中心的一个或多个点的多个点处在数据存储设备的轨道上测量跑出。 通常使用未缝合的初始位置误差信号或非缝合正交位置误差信号来测量跑出。 偏移量通常是位置误差信号的针迹点。 在点处提取跑步的分量，其中分量通常包括跑出的一个或多个特性，例如频率，一组频率，均方根或者跑出的其他一些特征。 用于位置误差信号的线性化方程式是基于测量的输出而被识别的，并且通常包括多项式函数。 调整线性化方程式的系数，使得耗尽量和耗尽量的分量在这些点上基本相似。 重复这些步骤，直到线性化方程式达到令人满意的拟合。 一旦实现令人满意的拟合，线性化方程的系数被存储在数据存储装置中，使得它们可以在数据存储装置的操作期间由伺服控制器访问。 伺服控制器使用线性化方程来产生线性化位置误差信号，该信号用于提高数据存储设备的跟踪能力。
-
10.发明授权State estimator alteration for odd sample times in a disk drive servo control system 失效磁盘驱动器伺服控制系统中奇数采样时间的状态估计器更改公开(公告)号：US06219198B1
公开(公告)日：2001-04-17
申请号：US09115484
申请日：1998-07-14
IPC分类号： G11B5596
CPC分类号： G11B21/106 , G11B5/5534 , G11B5/5547
摘要： A direct access storage device (DASD) servo control system includes a servo controller that makes an estimate of disk actuator arm position and velocity as for a regular, expected PES signal sample time, and then alters the estimate for an odd sample time using a simplified estimation function. The altered estimate is generated after determining the amount of time by which the odd sample time is longer than the regular sample time. An odd sample time event is recognized and the odd sample time is forced longer than the regular sample time by skipping a disk control signal computation interval. In this way, the estimated position and velocity of the disk arm is improved for odd sample times, even where the change in one PES sample time may be unrelated to the change in any subsequent PES sample times.
摘要翻译： 直接存取存储装置（DASD）伺服控制系统包括一个伺服控制器，用于对常规预期的PES信号采样时间作出估计的磁盘致动器臂位置和速度，然后使用简化的 估计函数。 在确定奇数采样时间比常规采样时间长的时间量之后产生改变的估计。 通过跳过磁盘控制信号计算间隔，识别奇数采样时间事件并且奇数采样时间被强制为长于正常采样时间。 以这种方式，即使在一个PES采样时间的变化可能与随后的PES采样次数的变化无关的情况下，对于奇数采样时间，盘臂的估计位置和速度也得到改善。
-
-
-
-
-
-
-
-
-
搜索结果
40 条记录 (耗时 0.022 秒)
