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1.发明授权公开(公告)号：US08963463B2
公开(公告)日：2015-02-24
申请号：US13614896
申请日：2012-09-13
摘要： Dynamic reconfiguration-switching of motor windings is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting a tape storage drive is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity.
摘要翻译： 电机绕组的动态重新配置切换在绕组配置之间进行了优化。 在检测到磁带存储驱动器处于最佳角速度以切换到最佳的较低转矩常数和电压常数时，加速度被消除以支持更高的速度。 总反向电动势（BEMF）被禁止禁止进一步加速到更高的角速度。
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公开(公告)号：US08749922B2
公开(公告)日：2014-06-10
申请号：US13555850
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
摘要翻译： 磁带驱动系统的磁带移动限制包括可倾斜的带滚子轴承，其具有适于当滚筒旋转时接触和接合带的表面的开槽表面;以及致动器，其适于在致动器为 致动，以控制胶带的横向位置。 在一个实施例中，在一个实施例中，可旋转滚子轴承的滚筒是利用可移动磁体和导磁材料返回路径结构之间的磁吸引力在枢转轴线上被偏置在第一位置。 辊筒通过传导电流通过固定线圈在枢轴上枢转，以产生磁场，该磁场由返回路径结构传导以与磁体的磁场相互作用。 描述和要求保护其他实施例。
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公开(公告)号：US08743508B2
公开(公告)日：2014-06-03
申请号：US13555833
申请日：2012-07-23
申请人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
发明人： Armando Jesus Argumedo , Nhan Xuan Bui , William Marvin Dyer , Reed Alan Hancock , David Howard Flores Harper , Wayne Isami Imaino , Kevin Bruce Judd
IPC分类号： G11B15/60
CPC分类号： G11B15/60
摘要： A tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator is actuated, to control the lateral position of a tape. In operation, in one embodiment, a roller barrel of the tiltable roller bearing is biased in a first position on a pivot axis, using magnetic attraction between a movable magnet and a return path structure of magnetically permeable material. The roller barrel is pivoted on the pivot axis by conducting current through a fixed coil to generate a magnetic field which is conducted by the return path structure to interact with the magnetic field of the magnet. Other embodiments are described and claimed.
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公开(公告)号：US08711511B2
公开(公告)日：2014-04-29
申请号：US13526529
申请日：2012-06-19
申请人： Angeliki Pantazi , Nhan Xuan Bui , Jens Jelitto
发明人： Angeliki Pantazi , Nhan Xuan Bui , Jens Jelitto
CPC分类号： G11B5/584
摘要： A tape drive configured to accurately position a head actuator in the presence of physical disturbances is disclosed. The tape drive includes a track-follow controller to position a head actuator over data tracks on magnetic tape. The tape drive further includes a disturbance observer configured to estimate a vibration disturbance and output a compensation signal to assist the track-follow controller to accurately position the head actuator over the data tracks in the presence of vibration. When estimating the vibration disturbance, the disturbance observer takes into account vibration frequency characteristics, such as frequency characteristics derived from a vibration specification associated with the tape drive, or frequency characteristics derived from known vibration disturbances experienced by the tape drive. A corresponding method is also disclosed.
摘要翻译： 公开了一种配置成在存在物理扰动的情况下精确地定位头致动器的磁带驱动器。 磁带驱动器包括轨道跟随控制器，用于将磁头执行器定位在磁带上的数据轨道上。 磁带驱动器还包括被配置为估计振动干扰并输出补偿信号的扰动观察器，以帮助跟踪跟踪控制器在存在振动的情况下将头致动器精确地定位在数据轨道上。 当估计振动扰动时，扰动观测器考虑振动频率特性，例如从与磁带驱动相关联的振动规格得出的频率特性，或由磁带机所经历的已知振动干扰导出的频率特性。 还公开了相应的方法。
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公开(公告)号：US20140063649A1
公开(公告)日：2014-03-06
申请号：US13596876
申请日：2012-08-28
IPC分类号： G11B5/584
摘要： A maximum velocity is dynamically determined during a tape drive operation to obtain a statistical standard deviation of a position error signal (PES) that yields an amount of stopwrite (SW) operations that avoids backhitching. The tape velocity is adjusted to the maximum velocity.
摘要翻译： 在磁带驱动操作期间动态地确定最大速度，以获得产生避免反向干扰的停止写（SW）操作量的位置误差信号（PES）的统计标准偏差。 磁带速度被调整到最大速度。
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公开(公告)号：US08405926B2
公开(公告)日：2013-03-26
申请号：US12842938
申请日：2010-07-23
申请人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
摘要： In accordance with the present invention, a method of operating a magnetic tape drive, a magnetic tape drive and a servo control system are provided for obtaining and maintaining velocity control in a magnetic tape drive. In one embodiment, a method is provided for operating a magnetic tape drive. The tape drive includes a plurality of DC motors, and each DC motor has a plurality of Hall sensors. The DC motors are under the control of a servo system which is configured to read location information from the magnetic tape, and compute a primary tape velocity from the location information, and sense a secondary and tertiary velocity signal and compute a tape velocity based on one of the sensed secondary velocity signal and tertiary velocity. The method includes detecting if the primary velocity location information is available. In response to detecting that the primary velocity location information is available the primary velocity is employed to control the servo system. In response to detecting the primary velocity location information is unavailable then one of a secondary or a tertiary velocity signal is employed. The secondary velocity signal is employed when an absolute value of a term related to tape velocity is less than a predetermined value. The tertiary velocity signal is employed when the absolute value of the term related to tape velocity is greater than the predetermined value.
摘要翻译： 根据本发明，提供了一种操作磁带驱动器，磁带驱动器和伺服控制系统的方法，用于获得和维持磁带驱动器中的速度控制。 在一个实施例中，提供了一种用于操作磁带驱动器的方法。 磁带驱动器包括多个DC电动机，并且每个DC电动机具有多个霍尔传感器。 直流电动机处于伺服系统的控制之下，伺服系统被配置为从磁带读取位置信息，并从位置信息计算主带速度，并感测二次和三次速度信号，并基于一个速度信号计算磁带速度 的感测二次速度信号和三次速度。 该方法包括检测主速度位置信息是否可用。 响应于检测到主速度位置信息可用，主速度被用于控制伺服系统。 响应于检测到主速度位置信息不可用，则采用次速或三速信号中的一个。 当与磁带速度相关的项的绝对值小于预定值时，采用二次速度信号。 当与磁带速度相关的项的绝对值大于预定值时，采用三次速度信号。
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7.发明申请公开(公告)号：US20130003218A1
公开(公告)日：2013-01-03
申请号：US13614896
申请日：2012-09-13
IPC分类号： G11B15/48
摘要： Dynamic reconfiguration-switching of motor windings is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity upon detecting a tape storage drive is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity.
摘要翻译： 电机绕组的动态重新配置切换在绕组配置之间进行了优化。 在检测到磁带存储驱动器处于最佳角速度以切换到最佳的较低转矩常数和电压常数时，加速度被消除以支持更高的速度。 总反向电动势（BEMF）被禁止禁止进一步加速到更高的角速度。
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8.发明申请Method and Apparatus to Position a Head Module Comprising Servo Elements and Plurality of Data Elements 有权用于定位包括伺服元件和多个数据元素的头模块的方法和装置公开(公告)号：US20120212853A1
公开(公告)日：2012-08-23
申请号：US13460614
申请日：2012-04-30
IPC分类号： G11B21/02
CPC分类号： G11B5/5552
摘要： A method to position a head module, where the head module comprises at least one servo element and a plurality of data elements, where the servo element and each of the plurality of data elements can detect a servo signal, wherein the method includes moving a sequential information storage medium having a servo band encoded therein across the head module and detecting the servo band using the at least one servo element or any one of the plurality of data elements.
摘要翻译： 一种定位头模块的方法，其中头模块包括至少一个伺服元件和多个数据元件，其中伺服元件和多个数据元素中的每一个可以检测伺服信号，其中该方法包括移动顺序 信息存储介质，其中跨越所述头模块编码了伺服频带，并且使用所述至少一个伺服单元或所述多个数据单元中的任何一个来检测所述伺服频带。
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9.发明授权公开(公告)号：US08134797B2
公开(公告)日：2012-03-13
申请号：US12716956
申请日：2010-03-03
申请人： Nhan Xuan Bui , Randy Clark Inch , Eiji Ogura
发明人： Nhan Xuan Bui , Randy Clark Inch , Eiji Ogura
CPC分类号： G11B5/584
摘要： The method employs a servo system for positioning a head laterally to follow lateral motion of a longitudinal tape having longitudinal defined servo track(s), the servo system comprising a servo element configured to sense lateral position of the head with respect to an acquired servo track, a fine actuator configured to translate the head laterally with respect to the longitudinal tape, and a position error signal loop to operate the fine actuator to translate the head laterally to reduce position error. If the servo element is positioned away from the defined servo track(s), a continuous position error offset signal is applied to the fine actuator in a direction towards the defined servo track(s), whereby the fine actuator translates the head in accordance with the continuous position error offset signal; and, in response to the servo system acquiring the defined servo track(s), the continuous position error offset signal is discontinued.
摘要翻译： 该方法采用伺服系统来横向定位头部以跟随具有纵向限定的伺服轨道的纵向带的侧向运动，该伺服系统包括伺服元件，该伺服元件被配置为感测头部相对于所获取的伺服轨道的横向位置 ，精细致动器，被配置为相对于纵向带横向地平移头部;以及位置误差信号回路，用于操作精细致动器以横向平移头部以减少位置误差。 如果伺服元件远离定义的伺服轨道定位，则连续的位置误差偏移信号在朝向所定义的伺服轨道的方向上被施加到精细致动器，由此精细致动器根据 连续位置误差偏移信号; 并且响应于伺服系统获取所定义的伺服轨迹，连续位置误差偏移信号被停止。
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公开(公告)号：US20120019953A1
公开(公告)日：2012-01-26
申请号：US12842938
申请日：2010-07-23
申请人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Reed Alan Hancock , Randy Clark Inch , Shuhei Nadehara , Eiji Ogura , Kazuhiro Tsuruta
IPC分类号： G11B19/02
摘要： In accordance with the present invention, a method of operating a magnetic tape drive, a magnetic tape drive and a servo control system are provided for obtaining and maintaining velocity control in a magnetic tape drive. In one embodiment, a method is provided for operating a magnetic tape drive. The tape drive includes a plurality of DC motors, and each DC motor has a plurality of Hall sensors. The DC motors are under the control of a servo system which is configured to read location information from the magnetic tape, and compute a primary tape velocity from the location information, and sense a secondary and tertiary velocity signal and compute a tape velocity based on one of the sensed secondary velocity signal and tertiary velocity. The method includes detecting if the primary velocity location information is available. In response to detecting that the primary velocity location information is available the primary velocity is employed to control the servo system. In response to detecting the primary velocity location information is unavailable then one of a secondary or a tertiary velocity signal is employed. The secondary velocity signal is employed when an absolute value of a term related to tape velocity is less than a predetermined value. The tertiary velocity signal is employed when the absolute value of the term related to tape velocity is greater than the predetermined value.
摘要翻译： 根据本发明，提供了一种操作磁带驱动器，磁带驱动器和伺服控制系统的方法，用于获得和维持磁带驱动器中的速度控制。 在一个实施例中，提供了一种用于操作磁带驱动器的方法。 磁带驱动器包括多个DC电动机，并且每个DC电动机具有多个霍尔传感器。 直流电动机处于伺服系统的控制之下，伺服系统被配置为从磁带读取位置信息，并从位置信息计算主带速度，并感测二次和三次速度信号，并基于一个速度信号计算磁带速度 的感测二次速度信号和三次速度。 该方法包括检测主速度位置信息是否可用。 响应于检测到主速度位置信息可用，主速度被用于控制伺服系统。 响应于检测到主速度位置信息不可用，则采用次速或三速信号中的一个。 当与磁带速度相关的项的绝对值小于预定值时，采用二次速度信号。 当与磁带速度相关的项的绝对值大于预定值时，采用三次速度信号。
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