公开(公告)号：US07010653B2

公开(公告)日：2006-03-07

申请号：US10405523

申请日：2003-04-02

申请人： Hiroshi Uchida ,  Tetsuo Semba ,  Tomoyuki Oyama

发明人： Hiroshi Uchida ,  Tetsuo Semba ,  Tomoyuki Oyama

IPC分类号： G06F13/14

CPC分类号： G06F3/0659 ,  G06F1/32 ,  G06F3/0625 ,  G06F3/0676 ,  Y02D10/154

摘要： A method and system to provide a command queue re-ordering method that can make the power save and reduction in acoustic noise. The command queue re-ordering method involves calculating the value of an evaluation function, Ev=A×T+(1−A)×Fun(L) (A is any number from 0 to 1, T is a latency required to execute a write command and/or read command, and Fun(L) is an evaluation function with a seek distance L) for the write command and/or read command, and selecting the write command and/or read command having the minimum value as a next command to be execute.

公开(公告)号：US07126784B2

公开(公告)日：2006-10-24

申请号：US11012460

申请日：2004-12-14

申请人： Tetsuya Tamura ,  Tetsuo Semba ,  Hiroshi Uchida

发明人： Tetsuya Tamura ,  Tetsuo Semba ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547

摘要： In conventional magnetic disk drives where stream data are treated, seek operations are performed at unnecessarily high speeds. This put the magnetic disk drives at a disadvantage in suppressing noise, reducing power consumption, and lowering the costs of actuator components. In one embodiment of the invention, a magnetic disk drive comprises a magnetic disk medium; a magnetic head; a head actuator to move the magnetic head relative to the magnetic disk medium; and a controller configured to control the head actuator to move the magnetic head to record data to and reproduce data from the magnetic disk medium. The controller is configured to control the magnetic head to record stream data on the magnetic disk medium in such a manner that the stream data is recognizable as stream data. The controller is configured to detect a situation in which two or more stream data are to be recorded or reproduced concurrently so as to set a slower seek operation mode.

摘要翻译： 在处理流数据的常规磁盘驱动器中，以不必要的高速执行查找操作。 这使得磁盘驱动器处于抑制噪声，降低功耗和降低致动器部件成本的缺点。 在本发明的一个实施例中，磁盘驱动器包括磁盘介质; 磁头; 头致动器，用于相对于磁盘介质移动磁头; 以及控制器，被配置为控制头致动器以移动磁头以将数据记录到磁盘介质并从其再现数据。 控制器被配置为控制磁头以将流数据识别为流数据的方式在磁盘介质上记录流数据。 控制器被配置为检测要同时记录或再现两个或多个流数据以便设置较慢的寻道操作模式的情况。

公开(公告)号：US20060114601A1

公开(公告)日：2006-06-01

申请号：US11000680

申请日：2004-11-30

申请人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547

摘要： Embodiments of the present invention provide a method and a system for generating optimal feedforward signal for the seek control to suppress the RTV (Random Transient Vibrations) and the seek acoustic noise. One aspect is directed to a method of providing a revised feedforward signal using an adaptive filter in a feedforward control system for controlling an actuator to move a head to seek a track and settle on the track of a disk in a disk drive apparatus. The method comprises performing a seek operation of the head using an initial feedforward signal; obtaining an error signal at settling after performing the seek operation; determining filter characteristics of the adaptive filter to minimize the error signal; and implementing the adaptive filter having the determined filter characteristics in the feedforward control system to produce a revised feedforward signal for controlling the actuator for moving the head in the disk drive apparatus.

摘要翻译： 本发明的实施例提供了一种用于产生用于搜索控制以抑制RTV（随机瞬态振荡）和寻呼声学噪声的最佳前馈信号的方法和系统。 一个方面涉及一种在前馈控制系统中使用自适应滤波器来提供修正的前馈信号的方法，用于控制致动器移动磁头以寻找磁道并将其稳定在盘驱动装置中的盘的轨道上。 该方法包括使用初始前馈信号来执行头的寻道操作; 在执行寻道操作之后获得沉降中的误差信号; 确定自适应滤波器的滤波器特性以最小化误差信号; 并且在前馈控制系统中实现具有确定的滤波器特性的自适应滤波器，以产生用于控制用于在盘驱动装置中移动磁头的致动器的修正前馈信号。

公开(公告)号：US20060158773A1

公开(公告)日：2006-07-20

申请号：US11335849

申请日：2006-01-18

申请人： Tetsuo Semba ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/5586

摘要： In seek control for a head of a rotary recorder/reproducer, the seek time is reduced with noise reduced while utilizing a driving force of an actuator effectively. In one embodiment, when a microprocessor generates a control signal for a drive current given to an actuator for head seek, a signal generator generates a prespecified acceleration allowing for the allowable maximum acceleration when the actuator is accelerated, a prespecified deceleration signal allowing for the allowable maximum deceleration when the actuator is decelerated, and a zero level signal when the actuator is settled. Switching from deceleration to settling is performed at a point of time computed by the microprocessor as a time point when settling is to be started so that the head may reach a target position within the shortest period of time.

摘要翻译： 在用于旋转记录器/再现器的头部的寻道控制中，在有效地利用致动器的驱动力的同时，寻求时间减少，噪声降低。 在一个实施例中，当微处理器产生用于头部寻道的致动器的驱动电流的控制信号时，信号发生器产生预先指定的加速度，允许致动器加速时允许的最大加速度，预定的减速信号允许允许 执行器减速时的最大减速度，执行机构稳定时为零电平信号。 从减速到稳定的切换是在由微处理器计算的时间点作为开始建立的时间点执行的，以便头部可以在最短时间内到达目标位置。

公开(公告)号：US06831809B2

公开(公告)日：2004-12-14

申请号：US10086204

申请日：2002-02-27

申请人： Naoyuki Kagami ,  Kenji Okada ,  Tetsuo Semba ,  Akira Tokizono ,  Hiroshi Uchida ,  Akinori Yuba

发明人： Naoyuki Kagami ,  Kenji Okada ,  Tetsuo Semba ,  Akira Tokizono ,  Hiroshi Uchida ,  Akinori Yuba

IPC分类号： G11B5596

CPC分类号： G11B5/59622

摘要： A control arrangement having a feedforward system and a feedback system, a control model for generating reference position data from a feedforward control signal is separated into an original control model and a compensation filter. Gain of the feedforward control signal is compensated by a gain compensation circuit to form a feedforward control signal after compensation. The reference position data is input to a feedback controller, and a feedback control signal and feedforward control signal are input to a control object. Coefficients of the compensation filter and the gain compensation circuit are compensated on the basis of a head position trajectory obtained by actual seek operation.

摘要翻译： 具有前馈系统和反馈系统的控制装置，用于从前馈控制信号产生参考位置数据的控制模型被分离成原始控制模型和补偿滤波器。 前馈控制信号的增益由增益补偿电路补偿，以在补偿后形成前馈控制信号。 参考位置数据被输入到反馈控制器，反馈控制信号和前馈控制信号被输入到控制对象。 补偿滤波器和增益补偿电路的系数基于通过实际寻道操作获得的磁头位置轨迹进行补偿。

公开(公告)号：US07457076B2

公开(公告)日：2008-11-25

申请号：US11335849

申请日：2006-01-18

申请人： Tetsuo Semba ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Hiroshi Uchida

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/5586

摘要： In seek control for a head of a rotary recorder/reproducer, the seek time is reduced with noise reduced while utilizing a driving force of an actuator effectively. In one embodiment, when a microprocessor generates a control signal for a drive current given to an actuator for head seek, a signal generator generates a prespecified acceleration allowing for the allowable maximum acceleration when the actuator is accelerated, a prespecified deceleration signal allowing for the allowable maximum deceleration when the actuator is decelerated, and a zero level signal when the actuator is settled. Switching from deceleration to settling is performed at a point of time computed by the microprocessor as a time point when settling is to be started so that the head may reach a target position within the shortest period of time.

摘要翻译： 在用于旋转记录器/再现器的头部的寻道控制中，在有效地利用致动器的驱动力的同时，寻求时间减少，噪声降低。 在一个实施例中，当微处理器产生用于头部寻道的致动器的驱动电流的控制信号时，信号发生器产生预先指定的加速度，允许执行器被加速时允许的最大加速度，预定的减速信号允许允许 执行器减速时的最大减速度，执行机构稳定时为零电平信号。 从减速到稳定的切换是在由微处理器计算的时间点作为开始建立的时间点执行的，以便头部可以在最短时间内到达目标位置。

公开(公告)号：US07206162B2

公开(公告)日：2007-04-17

申请号：US11000680

申请日：2004-11-30

申请人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

发明人： Tetsuo Semba ,  Matthew White ,  Hiroshi Uchida

IPC分类号： G11B5/596 ,  G11B5/58 ,  G11B5/55

CPC分类号： G11B5/5547

摘要： Embodiments of the present invention provide a method and a system for generating optimal feedforward signal for the seek control to suppress the RTV (Random Transient Vibrations) and the seek acoustic noise. One aspect is directed to a method of providing a revised feedforward signal using an adaptive filter in a feedforward control system for controlling an actuator to move a head to seek a track and settle on the track of a disk in a disk drive apparatus. The method comprises performing a seek operation of the head using an initial feedforward signal; obtaining an error signal at settling after performing the seek operation; determining filter characteristics of the adaptive filter to minimize the error signal; and implementing the adaptive filter having the determined filter characteristics in the feedforward control system to produce a revised feedforward signal for controlling the actuator for moving the head in the disk drive apparatus.

摘要翻译： 本发明的实施例提供了一种用于产生用于搜索控制以抑制RTV（随机瞬态振荡）和寻呼声学噪声的最佳前馈信号的方法和系统。 一个方面涉及一种在前馈控制系统中使用自适应滤波器来提供修正的前馈信号的方法，用于控制致动器移动磁头以寻找磁道并将其稳定在盘驱动装置中的盘的轨道上。 该方法包括使用初始前馈信号来执行头的寻道操作; 在执行寻道操作之后获得沉降中的误差信号; 确定自适应滤波器的滤波器特性以最小化误差信号; 并且在前馈控制系统中实现具有确定的滤波器特性的自适应滤波器，以产生用于控制用于在盘驱动装置中移动磁头的致动器的修正前馈信号。

公开(公告)号：US08724248B2

公开(公告)日：2014-05-13

申请号：US13306736

申请日：2011-11-29

申请人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba ,  Zvonimir Z. Bandic

发明人： Abhishek Dhanda ,  Toshiki Hirano ,  Tetsuo Semba ,  Zvonimir Z. Bandic

IPC分类号： G11B21/02

CPC分类号： G11B5/59627 ,  G11B5/59694 ,  G11B20/1217 ,  G11B2020/1228 ,  G11B2020/1238 ,  G11B2220/2516

摘要： A method, apparatus and a data storage device are provided for implementing data track pitch adjustment for data written on a recordable surface of a storage device under operational vibration conditions. An operational vibration disturbance spectrum is detected during a write operation and the data track pitch is selectively adjusted based on the detected operational vibration disturbance spectrum. The adjusted track pitch information is saved and used during a read operation.

摘要翻译： 提供了一种方法，装置和数据存储装置，用于在操作的振动条件下为存储装置的可记录表面上写入的数据实现数据轨道间距调整。 在写入操作期间检测到操作的振动干扰频谱，并且基于检测到的操作振动干扰谱选择性地调整数据轨道间距。 调整后的音高信息在读取操作期间被保存和使用。

公开(公告)号：US08379342B2

公开(公告)日：2013-02-19

申请号：US12211569

申请日：2008-09-16

申请人： Fu-Ying Huang ,  Tetsuo Semba ,  Xiaotian Sun

发明人： Fu-Ying Huang ,  Tetsuo Semba ,  Xiaotian Sun

IPC分类号： G11B21/02

CPC分类号： G11B5/5582 ,  G11B5/59627

摘要： A disk drive and a method for operating the disk drive compensates for rotational vibration (RV) by adaptively modifying the gains of two separate linear vibration sensors so the sensor gains are optimal under any given condition. The two sensors provide two signals S1, S2, respectively, to the disk drive's servo control processor that generates the control signal to the voice coil motor (VCM) actuator that controls the positioning of the read/write head. The processor uses S1, S2 and the head position error signal (PES) as inputs to run an adaptive RV feedforward (RVFF) algorithm. The adaptive RVFF algorithm takes the PES and sensor outputs S1 and S2 as inputs, mathematically determines the required correction to the sensor gain factors k1 and k2, respectively, and then adjusts the gain factors k1 and k2 accordingly. Each signal S1, S2 is then modified by its adjusted gain factor k1, k2, respectively. The difference in the modified S1, S2 signals is the RVFF signal that is summed with the control signal to generate the RV-compensated control signal to the VCM actuator.

摘要翻译： 磁盘驱动器和用于操作磁盘驱动器的方法通过自适应地修改两个单独的线性振动传感器的增益来补偿旋转振动（RV），使得传感器增益在任何给定条件下是最佳的。 两个传感器分别向磁盘驱动器的伺服控制处理器提供两个信号S1，S2，该伺服控制处理器产生对控制读/写头定位的音圈电机（VCM）致动器的控制信号。 处理器使用S1，S2和头位置误差信号（PES）作为输入来运行自适应RV前馈（RVFF）算法。 自适应RVFF算法将PES和传感器输出S1和S2作为输入，分别在传感器增益因子k1和k2上数学确定所需的校正，然后相应地调整增益因子k1和k2。 然后，通过其调整的增益因子k1，k2来修改每个信号S1，S2。 修改后的S1，S2信号的差异是将RVFF信号与控制信号相加，以产生向VCM致动器的RV补偿的控制信号。

公开(公告)号：US20060072392A1

公开(公告)日：2006-04-06

申请号：US10956972

申请日：2004-09-30

申请人： Tetsuo Semba ,  Matthew White ,  Eric Baugh

发明人： Tetsuo Semba ,  Matthew White ,  Eric Baugh

IPC分类号： G11B7/00

CPC分类号： G11B5/59627 ,  G11B5/5582

摘要： Embodiments of the present invention provide a way to modify the controller of a HDD head actuator to increase the error rejection capability and suppress the wideband vibration that affects the head motion. In one embodiment, a system to suppress influence of an external disturbance to an actuator comprises a controller providing a controller output as an actuator input to drive an actuator; a feedback loop to feed a head signal at an output of the actuator back as an input to the controller to produce an error signal; and a plurality of peak filters coupled to the controller and having different peak frequencies. Each peak filter has a peak filter input including the error signal, and has a peak filter output. A supervisor module is coupled with the peak filters to selectively add or delete the peak filter output of each peak filter to the actuator input to drive the actuator.

摘要翻译： 本发明的实施例提供了一种修改HDD头致动器的控制器以增加误差抑制能力并抑制影响头部运动的宽带振动的方法。 在一个实施例中，抑制对致动器的外部干扰的影响的系统包括控制器，其提供控制器输出作为致动器输入以驱动致动器; 反馈回路，用于将致动器的输出端的头信号馈送到控制器，以产生误差信号; 以及耦合到控制器并具有不同峰值频率的多个峰值滤波器。 每个峰值滤波器都具有包括误差信号的峰值滤波器输入，并具有峰值滤波器输出。 主管模块与峰值滤波器耦合，以选择性地将每个峰值滤波器的峰值滤波器输出添加或删除到致动器输入以驱动致动器。