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1. 发明授权

US06744591B2 Positioning control method 失效
标题翻译：定位控制方法
公开(公告)号：US06744591B2
公开(公告)日：2004-06-01
申请号：US09742058
申请日：2000-12-22
申请人： Shinsuke Nakagawa , Yuji Hata , Hiromoto Takeda , Kiyotada Ito , Takashi Yamaguchi
发明人： Shinsuke Nakagawa , Yuji Hata , Hiromoto Takeda , Kiyotada Ito , Takashi Yamaguchi
IPC分类号： G11B5596
CPC分类号： G11B5/59627
摘要： A positioning control method of a magnetic disc apparatus is provided which can permit fast and stable settling to a target position without overshoot or undershoot in connection with a moving distance of one track seek to about 16-track seek for which positioning must be determined within a moving time corresponding to a resonance frequency of a mechanical system. Such a method can also generate a position/velocity orbit for reducing power at a specified frequency, provide acceleration feed-forward compensation which can permit a head to accurately reach the target position even when the feedback system does not function under a condition that external disturbance does not act and generate a position orbit corrected by a controlled object model accurately modeling resonance oscillation up to a moving frequency band are used in combination.
摘要翻译：提供了一种磁盘装置的定位控制方法，其可以允许对目标位置的快速和稳定的稳定，而无需过冲或下冲，与一个轨道寻道的移动距离相关联到大约16轨道寻道，其中必须在移动时间对应于机械系统的共振频率。这种方法还可以产生用于降低指定频率的功率的位置/速度轨道，提供加速前馈补偿，即使当反馈系统在外部干扰的条件下不起作用时，其能够准确地达到目标位置不会起作用并产生通过受控对象模型校正的位置轨道，将共振振荡精确地建模到移动频带。

2. 发明授权

US06738218B1 Disk storage device and head positioning method 失效
标题翻译：磁盘存储设备和磁头定位方法
公开(公告)号：US06738218B1
公开(公告)日：2004-05-18
申请号：US09655825
申请日：2000-09-06
申请人： Yosuke Hamada , Iwao Oshimi , Jiro Abe , Kiyotada Ito , Shinsuke Nakagawa
发明人： Yosuke Hamada , Iwao Oshimi , Jiro Abe , Kiyotada Ito , Shinsuke Nakagawa
IPC分类号： G11B5596
CPC分类号： G11B5/5556 , G11B5/5547
摘要： Settling response characteristics after change-over from a speed controller to a position controller is attained. Fluctuations in a time taken until change-over is made from the speed controller to the position controller are reduced to stabilize a moving time and to shorten an access time. To this end, a position controller generates a drive signal of a linear or primary function of time in such a manner that a position deviation signal responds to it with a ternary-order function of time which becomes zero in a desired finite settling time. Further, a feedforward signal generator is provided to reduce a follow-up error to a target position signal as an output of a target position signal generator. Furthermore, a switching judger is provided to start its judging operation after the position deviation signal reaches a predetermine position deviation and to perform switching operation from the speed controller to the position controller when the position deviation signal is not larger than a value corresponding to a proportional multiple of a speed signal.
摘要翻译：实现了从速度控制器到位置控制器的切换后的响应特性。从速度控制器到位置控制器进行转换所花费的时间的波动被减少以稳定移动时间并缩短访问时间。为此，位置控制器产生时间的线性或主要功能的驱动信号，使得位置偏差信号以期望的有限建立时间内变为零的三次时间函数对其进行响应。此外，提供前馈信号发生器以减少作为目标位置信号发生器的输出的目标位置信号的跟踪误差。此外，当位置偏差信号达到预定位置偏差时，提供切换判断器以开始其判断操作，并且当位置偏差信号不大于对应于比例的值时，执行从速度控制器到位置控制器的切换操作多个速度信号。

3. 发明授权

US06950273B2 Magnetic disk device 失效
标题翻译：磁盘装置
公开(公告)号：US06950273B2
公开(公告)日：2005-09-27
申请号：US10136317
申请日：2002-05-02
申请人： Shinsuke Nakagawa , Kiyotada Ito
发明人： Shinsuke Nakagawa , Kiyotada Ito
IPC分类号： G11B21/10 , G11B5/596
CPC分类号： G11B5/59627 , G11B5/59622
摘要： The position error signal (PES), representing relative position regarding position information (RRO) previously recorded on a magnetic disk and the magnetic head, is averaged in each servo sector by an averaging unit, and a control input is obtained based on the PES by a phase compensator and the control input undergoes an averaging process in each servo sector by another averaging unit. Convolution integration with respect to the signal data processed by those averaging units is carried out by using a transfer characteristic formed by adding 1 to an open-loop transfer characteristic, which is determined by a magnetic head actuator model and a servo control circuit, to obtain a synchronous vibration estimate. This estimate undergoes a high-pass filtering process of a zero phase error characteristic by the filter unit to remove the vibration component of low frequency band and to thereby obtain a synchronous vibration learned value with high precision.
摘要翻译：代表先前记录在磁盘上的位置信息（RRO）和磁头的相对位置的位置误差信号（PES）在每个伺服扇区中通过平均单元进行平均，并且基于PES被获得控制输入相位补偿器和控制输入端通过另一个平均单元在每个伺服扇区中进行平均处理。通过使用由磁头致动器模型和伺服控制电路确定的开环传递特性加1来形成的传递特性来执行与这些平均单元处理的信号数据相关的卷积积分，以获得同步振动估计。该估计通过滤波器单元进行零相位误差特性的高通滤波处理，以去除低频带的振动分量，从而以高精度获得同步振动学习值。

4. 发明授权

US08838257B1 Controller and design support apparatus 有权
标题翻译：控制器和设计支持设备
公开(公告)号：US08838257B1
公开(公告)日：2014-09-16
申请号：US12185026
申请日：2008-08-01
申请人： Kiyotada Ito , Takahiro Inoue
发明人： Kiyotada Ito , Takahiro Inoue
IPC分类号： G05B13/02 , G11B5/596
CPC分类号： G11B19/28 , G05B13/0205
摘要： Methods, systems, and computer program products for compensating unstable linear time-invariant due to input nonlinearities are described. In one implementation, compensating a controlled device may include controlling the controlled device using feedforward control. In another implementation, compensating the controlled device may include controlling the controlled device using feedback control.
摘要翻译：描述了用于补偿由于输入非线性引起的不稳定线性时不变量的方法，系统和计算机程序产品。在一个实现中，补偿受控设备可以包括使用前馈控制来控制受控设备。在另一个实施方案中，补偿受控设备可以包括使用反馈控制来控制受控设备。

5. 发明授权

US08320068B1 Recording medium and recording apparatus for using test data recorded in a blank zone to refine data recording 有权
标题翻译：用于使用记录在空白区域中的测试数据的记录介质和记录装置来细化数据记录
公开(公告)号：US08320068B1
公开(公告)日：2012-11-27
申请号：US13356134
申请日：2012-01-23
申请人： Kiyotada Ito
发明人： Kiyotada Ito
IPC分类号： G11B5/09 , G11B21/02
CPC分类号： G11B5/455 , G11B5/012
摘要： In some implementations, a recording medium includes a plurality of data areas, a plurality of data area separating sections, and one or more blank zones. Each data area is configured to store data. Each data area separating section is disposed between the data areas and extends in parallel with respect to the data areas. Each data area separating section is configured to prevent data from being written into the data area separating section. Each blank zone extends in a direction perpendicular to the data areas and is configured to record written data.
摘要翻译：在一些实施方案中，记录介质包括多个数据区域，多个数据区域分离区段和一个或多个空白区域。每个数据区被配置为存储数据。每个数据区域分离部分设置在数据区域之间并相对于数据区域并行延伸。每个数据区域分离部分被配置为防止数据被写入数据区域分离部分。每个空白区域在垂直于数据区域的方向上延伸，并被配置为记录写入的数据。

6. 发明授权

US08045287B1 Self-servo-write method with repeatable runout compensation 有权
标题翻译：具有可重复跳动补偿的自伺服写入方式
公开(公告)号：US08045287B1
公开(公告)日：2011-10-25
申请号：US12945112
申请日：2010-11-12
申请人： Makoto Horisaki , Kiyotada Ito
发明人： Makoto Horisaki , Kiyotada Ito
IPC分类号： G11B5/596
CPC分类号： G11B5/59633 , G11B5/5534 , G11B5/59627 , G11B5/59666
摘要： A system including a self-servo-write, a position measuring module, and a compensation module. The self-servo-write module is configured to position a head of a hard disk drive to write a first set of servo wedges on a magnetic medium of the hard disk drive. The position measuring module is configured to measure a first position of the head when the head writes the first set of servo wedges on the magnetic medium. The compensation module is configured to generate first data to compensate a repeatable error based on the first position of the head measured by the position measuring module. The first data to compensate the repeatable error is written on the magnetic medium along with the first set of servo wedges.
摘要翻译：一种包括自伺服写入，位置测量模块和补偿模块的系统。自伺服写模块被配置为将硬盘驱动器的头部定位在硬盘驱动器的磁介质上写入第一组伺服楔块。位置测量模块被配置为当磁头将第一组伺服楔形件写入磁介质时，测量磁头的第一位置。补偿模块被配置为生成第一数据，以基于由位置测量模块测量的头部的第一位置来补偿可重复的误差。用于补偿可重复误差的第一数据与第一组伺服楔形件一起写在磁介质上。

7. 发明授权

US08614556B1 Down sampling method for hard disk speed control loop 有权
标题翻译：硬盘速度控制循环的下采样方法
公开(公告)号：US08614556B1
公开(公告)日：2013-12-24
申请号：US13598541
申请日：2012-08-29
申请人： Kiyotada Ito , Takahiro Inoue , Foo Leng Leong
发明人： Kiyotada Ito , Takahiro Inoue , Foo Leng Leong
IPC分类号： H02P6/16 , G05B11/01
CPC分类号： G11B19/28 , H02P6/10 , H02P6/17
摘要： In some implementations, a method includes receiving rotational speed information corresponding to a rotational speed of a spindle motor having a plurality of poles, down sampling the rotational speed information to obtain speed-related information associated with the spindle motor, and adjusting the rotational speed of the spindle motor based on the speed-related information.
摘要翻译：在一些实施方式中，一种方法包括接收与具有多个极的主轴电动机的转速相对应的转速信息，对转速信息进行下采样以获得与主轴电动机相关联的速度相关信息，以及调整转速信息主轴电机基于速度相关信息。

8. 发明授权

US08258729B1 Down sampling method for hard disk speed control loop 有权
标题翻译：硬盘速度控制循环的下采样方法
公开(公告)号：US08258729B1
公开(公告)日：2012-09-04
申请号：US12629575
申请日：2009-12-02
申请人： Kiyotada Ito , Takahiro Inoue , Foo Leng Leong
发明人： Kiyotada Ito , Takahiro Inoue , Foo Leng Leong
IPC分类号： H02P6/16 , G05B11/01
CPC分类号： G11B19/28 , H02P6/10 , H02P6/17
摘要： Systems, methods and computer program products for removing speed adjustment errors attributed by pole asymmetry are described. In some implementations, the spindle motor speed can be down sampled. Down sampling the spindle motor speed can include determining the spindle motor speed every two (or multiple of two) electrical cycles. Determining the spindle motor speed every two electrical cycles can lead to an accurate determination of the actual spindle motor speed, as the timing and position differences between two adjacent poles can be equalized (e.g., timing and position errors associated with the second pole can be used to cancel out the timing and position characteristics errors with the first pole).
摘要翻译：描述了用于消除由杆不对称引起的速度调节误差的系统，方法和计算机程序产品。在一些实施方式中，可以对主轴电机速度进行下采样。主轴电机速度的下降采样可以包括每两（或两个）电循环确定主轴电机速度。由于两相邻极之间的定时和位置差异可以相等（例如，可以使用与第二极相关的定时和位置误差），可以每两个电周期确定主轴电机速度可以准确地确定主轴电机转速以消除第一极的时序和位置特性误差）。

9. 发明授权

US08077421B1 Pole mismatch compensation via feedback control approach 有权
标题翻译：通过反馈控制方式进行极点失配补偿
公开(公告)号：US08077421B1
公开(公告)日：2011-12-13
申请号：US12353441
申请日：2009-01-14
申请人： Kiyotada Ito , Takahiro Inoue
发明人： Kiyotada Ito , Takahiro Inoue
IPC分类号： G11B15/46 , H02P5/00 , H02P6/00 , H02P6/16
CPC分类号： H02P6/16 , G11B19/28 , G11B20/24 , G11B2220/2516
摘要： A system including an error signal generating module to generate an error signal based on (i) back electromotive force sensed from a motor and (ii) a predetermined speed of the motor. The error signal includes noise due to mismatched poles of the motor. A noise elimination module eliminates components of the noise having frequencies N times a frequency of rotation of the motor from the error signal and generates a corrected error signal, where N is an integer greater than or equal to zero. A control module generates a first control signal based on components of the corrected error signal, generates a second control signal based on components of the error signal, and rotates the motor at the predetermined speed based on (i) the first control signal and (ii) the second control signal. The components of the corrected error signal have higher frequencies than the components of the error signal.
摘要翻译：一种包括误差信号产生模块的系统，用于基于（i）从电动机感测的反电动势和（ii）电动机的预定速度来产生误差信号。误差信号包括由于电动机不匹配的极点引起的噪声。噪声消除模块从误差信号中消除频率为电动机旋转频率N倍的噪声的分量，并产生校正误差信号，其中N是大于或等于零的整数。控制模块基于校正的误差信号的分量产生第一控制信号，基于误差信号的分量产生第二控制信号，并且基于（i）第一控制信号以及（i）第一控制信号以预定速度旋转电机）第二控制信号。校正误差信号的分量具有比误差信号的分量更高的频率。

10. 发明授权

US08000055B2 Control system and method for loading actuator arm of rotating storage device 有权
标题翻译：旋转储存装置执行机构臂的控制系统及方法
公开(公告)号：US08000055B2
公开(公告)日：2011-08-16
申请号：US12983593
申请日：2011-01-03
申请人： Kiyotada Ito
发明人： Kiyotada Ito
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/54 , G11B21/12
摘要： A system includes a control module configured to generate a first signal to control a speed of an actuator arm of a rotating storage device. An estimating module includes a first filter configured to generate a first filtered output based on the first signal. A second filter is configured to generate a second filtered output based on the speed of the actuator arm. The estimating module is configured to estimate a force to move the actuator arm based on (i) the first filtered output and (ii) the second filtered output. The first filter and the second filter include infinite impulse response (IIR) filters of Pth order, where P is an integer greater than 1.
摘要翻译：一种系统包括：控制模块，被配置为产生第一信号以控制旋转存储装置的致动器臂的速度。估计模块包括被配置为基于第一信号产生第一滤波输出的第一滤波器。第二过滤器被配置为基于致动器臂的速度生成第二过滤输出。估计模块被配置为基于（i）第一滤波输出和（ii）第二滤波输出来估计移动致动器臂的力。第一滤波器和第二滤波器包括P阶的无限脉冲响应（IIR）滤波器，其中P是大于1的整数。

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