公开(公告)号：US06947249B1

公开(公告)日：2005-09-20

申请号：US10029528

申请日：2001-12-20

申请人： Jim Hargarten ,  Thomas Melrose ,  John Purkett

发明人： Jim Hargarten ,  Thomas Melrose ,  John Purkett

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： A method and apparatus for automatically determining an embedded runout correction threshold for a disk drive are disclosed. In prior systems, embedded runout correction thresholds were set for all disk drives in a production run. The present invention provides a technique for automatically determining an embedded runout correction threshold on a drive-by-drive basis, instead of a production run of drives basis.

摘要翻译： 公开了一种用于自动确定磁盘驱动器的嵌入式跳动校正阈值的方法和装置。 在现有系统中，在生产运行中为所有磁盘驱动器设置了嵌入式跳动校正阈值。 本发明提供了一种用于在逐个驱动的基础上自动确定嵌入式跳动校正阈值的技术，而不是基于驱动器的生产运行。

公开(公告)号：US06549362B1

公开(公告)日：2003-04-15

申请号：US09753969

申请日：2001-01-02

申请人： Thomas Melrose ,  Andy Ottele ,  Jim Hargarten ,  Dave Finamore

发明人： Thomas Melrose ,  Andy Ottele ,  Jim Hargarten ,  Dave Finamore

IPC分类号： G11B5596

CPC分类号： G11B5/59627

摘要： A method and apparatus for the enhancement of embedded runout correction in a disk drive is provided. According to the present invention, embedded runout correction values are obtained by convolving a position error signal due to repeatable runout for a track with an inverse impulse response describing the response of a transducer head servo system to a given input. According to the present invention, the inverse impulse response is determined by introducing an impulse to a transducer head servo system, and measuring the response of the system in the time domain. The response is transformed to the frequency domain to form an error transfer function, the reciprocal is taken, and the function is transformed back into the time domain. The inverse impulse response, according to the present invention, is obtained for at least every transducer head in a disk drive capable of addressing a track for which embedded runout correction is desired. The embedded runout correction values may be calculated without the use of a servo track writer.

摘要翻译： 提供了一种用于增强磁盘驱动器中的嵌入式跳动校正的方法和装置。 根据本发明，通过将具有描述转换器头伺服系统的响应的反冲激响应的轨道的位置误差信号由于可重复的跳动卷积到给定的输入来获得嵌入的跳动校正值。 根据本发明，通过将脉冲引入到换能器头伺服系统，并测量系统在时域中的响应来确定逆脉冲响应。 将响应转换为频域以形成误差传递函数，进行倒数，并将该函数转换回时域。 根据本发明的反冲激响应是针对能够寻址希望嵌入跳动校正的轨道的磁盘驱动器中的至少每个换能器头而获得的。 可以在不使用伺服轨迹写入器的情况下计算嵌入的跳动校正值。

公开(公告)号：US20080218899A1

公开(公告)日：2008-09-11

申请号：US11715861

申请日：2007-03-08

申请人： Doug Frisby ,  Jim Hargarten

发明人： Doug Frisby ,  Jim Hargarten

IPC分类号： G11B5/54

CPC分类号： G11B5/5547

摘要： a seek procedure for a hard disk drive which provides a significant reduction in acoustic noise as well as high performance fast seek times is described. The seek procedure lowers the peak acceleration for short seeks and imparts a smooth transition from a sine seek to an exponential arrival at the target track. The seek procedure provides an error free feedforward signal derived from a single sine table. The procedure which contains a time domain sinusoid acceleration feedforward combined with a phase-plane trajectory controlled velocity which, near seek completion. The procedure is constructed so that the acceleration begins at zero and, in the fashion of a sine, increases to a maximum, decreases to a minimum and then increases again until a computed switchpoint is reached. The switchpoint is determined in-situ, to provide a smooth and continuous velocity transition from sinusoid to exponential. The velocity trajectory is computed from a look-up table. The procedure is implemented using conventional seek controller servo components and commercially available operation software.

摘要翻译： 描述了提供显着降低声学噪声以及高性能快速寻道时间的硬盘驱动器的寻道过程。 寻道过程降低了短寻迹的峰值加速度，并且从正弦搜索平稳过渡到目标轨迹上的指数到达。 寻道程序提供从单个正弦表导出的无误差前馈信号。 包含时域正弦加速度前馈以及相位平面轨迹控制速度的程序，近似寻求完成。 该过程被构造成使得加速度从零开始，并且以正弦的方式增加到最大值，减小到最小，然后再次增加直到达到计算的切换点。 切换点是原位确定的，以提供从正弦曲线到指数的平滑和连续的速度转换。 从查找表中计算速度轨迹。 该程序使用传统的寻道控制器伺服组件和市售操作软件来实现。

公开(公告)号：US07660070B2

公开(公告)日：2010-02-09

申请号：US11715861

申请日：2007-03-08

申请人： Doug Frisby ,  Jim Hargarten

发明人： Doug Frisby ,  Jim Hargarten

IPC分类号： G11B5/55

CPC分类号： G11B5/5547

摘要： a seek procedure for a hard disk drive which provides a significant reduction in acoustic noise as well as high performance fast seek times is described. The seek procedure lowers the peak acceleration for short seeks and imparts a smooth transition from a sine seek to an exponential arrival at the target track. The seek procedure provides an error free feedforward signal derived from a single sine table. The procedure which contains a time domain sinusoid acceleration feedforward combined with a phase-plane trajectory controlled velocity which, near seek completion. The procedure is constructed so that the acceleration begins at zero and, in the fashion of a sine, increases to a maximum, decreases to a minimum and then increases again until a computed switchpoint is reached. The switchpoint is determined in-situ, to provide a smooth and continuous velocity transition from sinusoid to exponential. The velocity trajectory is computed from a look-up table. The procedure is implemented using conventional seek controller servo components and commercially available operation software.

摘要翻译： 描述了提供显着降低声学噪声以及高性能快速寻道时间的硬盘驱动器的寻道过程。 寻道过程降低了短寻迹的峰值加速度，并且从正弦搜索平稳过渡到目标轨迹上的指数到达。 寻道程序提供从单个正弦表导出的无误差前馈信号。 包含时域正弦加速度前馈以及相位平面轨迹控制速度的程序，近似寻求完成。 该过程被构造成使得加速度从零开始，并且以正弦的方式增加到最大值，减小到最小，然后再次增加直到达到计算的切换点。 切换点是原位确定的，以提供从正弦曲线到指数的平滑和连续的速度转换。 从查找表中计算速度轨迹。 该程序使用传统的寻道控制器伺服组件和市售操作软件来实现。

公开(公告)号：US5206570A

公开(公告)日：1993-04-27

申请号：US671500

申请日：1991-03-19

申请人： Jim Hargarten ,  Gary Counts ,  Scott Chase

发明人： Jim Hargarten ,  Gary Counts ,  Scott Chase

IPC分类号： G11B21/10 ,  G11B5/55

CPC分类号： G11B5/5547

摘要： An actuator control loop for controlling head position in a rotating media data storage system. The invention applies the compensation zero to the PES prior to summing it with the integrator. This scheme reduces transients caused by the integrator initialization step because the zero does not "see" the integrator initialization step. Transients that can result from coupling the integrator initialization to the zero can cause overshoot and ringing in the actuator, increasing settling time and reducing system performance. The present invention also provides a first sample velocity compensation scheme that removes the velocity correction factor from the PES signal in the first sample after a seek. This significantly reduces settling time and improves system performance. In one embodiment, the microprocessor of the present invention calculates a velocity compensation factor based on the PES signal. This signal is then superimposed on the integrator output. In another embodiment, the zero is moved during the first sample after a seek, so that no velocity correction is undertaken. In subsequent sample periods, the zero is returned to its desired frequency.

摘要翻译： 用于控制旋转介质数据存储系统中的打印头位置的致动器控制回路。 本发明在将积分器求和之前将补偿零值应用于PES。 该方案减少了由积分器初始化步骤引起的瞬变，因为零不会“看到”积分器初始化步骤。 通过将积分器初始化耦合到零可导致的瞬态可能会导致执行器中的过冲和振铃，增加稳定时间并降低系统性能。 本发明还提供了第一采样速度补偿方案，其在搜索之后从第一样本中的PES信号中去除速度校正因子。 这显着减少了建立时间并提高了系统性能。 在一个实施例中，本发明的微处理器基于PES信号计算速度补偿因子。 然后将该信号叠加在积分器输出上。 在另一个实施例中，在搜索之后，在第一采样期间零被移动，使得不进行速度校正。 在随后的采样周期中，零返回到其所需的频率。