公开(公告)号：US06961202B2

公开(公告)日：2005-11-01

申请号：US10421447

申请日：2003-04-23

申请人： Gaku Ikedo ,  Mirei Hosono ,  Yoshitaka Kakizaki ,  Naoyuki Kagami

发明人： Gaku Ikedo ,  Mirei Hosono ,  Yoshitaka Kakizaki ,  Naoyuki Kagami

IPC分类号： G11B33/14 ,  G11B21/08 ,  G11B21/10 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  G11B5/596 ,  G11B5/012

CPC分类号： G11B33/121 ,  G11B25/043 ,  G11B33/08

摘要： A data storage device includes an enclosure case and a circuit board attached to an outer surface of the enclosure case, the enclosure case containing a spindle motor and a circular movement actuator, the spindle motor being for rotating a storage medium, the circular movement actuator being for controlling a position of a read and write head for reading data from the storage medium and for writing data to the storage medium, the circuit board having an interface cable connector at one end portion thereof for establishing a connection to a host. The circuit board is located between the interface cable connector and the spindle motor, and is attached to the enclosure case by use of a plurality of fastening members. An acceleration sensor is attached to the circuit board next to the fastening members for detecting vibrations applied to the data storage device in a rotation direction in a plane along the circuit board.

摘要翻译： 数据存储装置包括外壳和附接到外壳的外表面的电路板，外壳包含主轴电机和圆形运动致动器，主轴电机用于旋转存储介质，圆周运动致动器为 用于控制用于从存储介质读取数据并用于将数据写入存储介质的读写头的位置，所述电路板在其一个端部具有用于建立到主机的连接的接口电缆连接器。 电路板位于接口电缆连接器和主轴电机之间，并且通过使用多个紧固件附接到外壳。 加速度传感器附着在紧固部件旁边，用于检测沿着电路板的平面中沿旋转方向施加到数据存储装置的振动。

公开(公告)号：US06937422B2

公开(公告)日：2005-08-30

申请号：US10289603

申请日：2002-11-07

申请人： Hien Phu Dang ,  Mirei Hosono ,  Naoyuki Kagami ,  Kenji Okada ,  Arun Sharma ,  Gordon James Smith ,  Sri M. Sri-Jayantha

发明人： Hien Phu Dang ,  Mirei Hosono ,  Naoyuki Kagami ,  Kenji Okada ,  Arun Sharma ,  Gordon James Smith ,  Sri M. Sri-Jayantha

IPC分类号： G11B21/10 ,  G06F11/07 ,  G11B5/596 ,  G11B19/04 ,  G11B19/28

CPC分类号： G11B5/596 ,  G11B19/04

摘要： An apparatus and method of controlling an actuator of a data storage device detect and/or correct narrowband mechanical excitations such as due to spindle bearing defects through sensing and/or rejecting disturbance frequencies associated with such narrowband mechanical excitations in an actuator control signal generated by a data storage device controller. A narrowband filter may be used to reject, from an actuator control signal generated by a data storage device controller, a disturbance frequency associated with a spindle bearing defect in a data storage device, and disposed in proximity to a zero crossover frequency associated with the data storage device controller. In addition, a peak filter disposed in a control loop of a data storage device controller may be configured to detect a spindle bearing defect in a data storage device by detecting an amplitude of a control signal in the control loop in proximity to a disturbance frequency associated with the spindle bearing defect.

摘要翻译： 控制数据存储设备的致动器的装置和方法通过检测和/或排除与由这样的窄带机械激励相关联的干扰频率来检测和/或校正窄带机械激励，例如由于主轴承载缺陷而导致的致动器控制信号产生的干扰频率 数据存储设备控制器。 窄带滤波器可以用于从数据存储设备控制器产生的致动器控制信号中拒绝与数据存储设备中的主轴承载缺陷相关联的干扰频率，并且设置在与数据相关联的零交叉频率附近 存储设备控制器 此外，布置在数据存储装置控制器的控制环路中的峰值滤波器可以被配置为通过检测控制回路中与干扰频率相关联的控制信号的幅度来检测数据存储装置中的主轴承载缺陷 主轴轴承缺陷。

公开(公告)号：US06411056B1

公开(公告)日：2002-06-25

申请号：US09670770

申请日：2000-09-27

申请人： Gaku Ikedo ,  Naoyuki Kagami ,  Akinori Yuba

发明人： Gaku Ikedo ,  Naoyuki Kagami ,  Akinori Yuba

IPC分类号： G05B1118

CPC分类号： G11B19/28

摘要： A system and method for providing rotation control stability within a disk drive. In accordance with the system of the present invention, a disk storage medium on which information is recorded is driven to rotate by a multiphase-phase DC servomotor. An actuator is utilized for loading and unloading the head to and from the disk storage medium. A load/unload controller commands the actuator to load or unload said head. In order to effectively compensate for an abrupt change in load on the servomotor caused by loading the head onto the disk storage medium, a slew rate switching unit is utilized to alter a slew rate of current supplied to the three-phase DC servomotor, based on a loading start command issued by the load/unload controller.

摘要翻译： 一种用于在盘驱动器内提供旋转控制稳定性的系统和方法。 根据本发明的系统，通过多相DC伺服电动机驱动记录有信息的盘存储介质。 致动器用于将磁头装载到磁盘存储介质和从磁盘存储介质卸载磁头。 加载/卸载控制器命令执行器加载或卸载所述头。 为了有效地补偿将磁头装载到磁盘存储介质上而导致的伺服电机的负载突然变化，使用压摆率切换单元来改变提供给三相直流伺服电动机的电流的转换速率，基于 由加载/卸载控制器发出的加载启动命令。

公开(公告)号：US07035034B2

公开(公告)日：2006-04-25

申请号：US10442803

申请日：2003-05-21

申请人： Tetsuo Semba ,  Naoyuki Kagami ,  Akira Tokizono ,  Gaku Ikedo

发明人： Tetsuo Semba ,  Naoyuki Kagami ,  Akira Tokizono ,  Gaku Ikedo

IPC分类号： G11B5/596

CPC分类号： G11B5/5526 ,  G11B5/5582

摘要： A hard disk device includes a servo control unit that constitutes a servo loop for a head seek for performing read/write of data from/to a recording medium, a correction signal generation unit for generating a correction signal for correcting a control by the servo control unit based on an output of a predetermined sensor, and a correction signal control unit for estimating an effect of supplying the correction signal to the servo loop and for controlling whether or not the correction signal is to be supplied to the servo loop in response to a result of the estimation. Moreover, the gain of the sensor is dynamically controlled in response to the above estimation result.

公开(公告)号：US06614613B1

公开(公告)日：2003-09-02

申请号：US09526261

申请日：2000-03-16

申请人： Fu-Ying Huang ,  Naoyuki Kagami ,  Tetsuo Semba ,  Eiji Soga ,  Shingo Tsuda

发明人： Fu-Ying Huang ,  Naoyuki Kagami ,  Tetsuo Semba ,  Eiji Soga ,  Shingo Tsuda

IPC分类号： G11B2110

CPC分类号： G05D19/02 ,  G11B5/10 ,  G11B5/5582 ,  G11B5/59627

摘要： An active control mechanism and method for stabilizing a servo-controlled actuator system such as an actuator system in a data recording disk drive by compensating the vibrational modes of the actuator's arm assembly. The control mechanism has a sensing arrangement which can include one or more individual sensors attached to the actuator at locations where they generate signals in phase with the vibrational modes, and especially with all the low-frequency major vibrational modes, of the arm assembly. A control mechanism derives from the signals an adjustment signal consisting of three corrective terms—a stiffening correction, an active damping correction, and an inertia correction by a phase correction. Furthermore, high-frequency out-of-phase modes can be stabilized by appropriately shifting the phase of the signals. The adjustment signal is used in the feedback control loop to stabilize the actuator system.

摘要翻译： 一种主动控制机构和方法，用于通过补偿致动器臂组件的振动模式来稳定伺服控制致动器系统，例如数据记录盘驱动器中的致动器系统。 控制机构具有感测装置，其可以包括一个或多个单独的传感器，其附接到致动器的位置，在那里它们与臂组件的振动模式，特别是与所有低频主要振动模式相同地产生信号。 控制机构从信号中获得由三个校正项组成的调整信号 - 加强校正，主动阻尼校正和通过相位校正的惯性校正。 此外，可以通过适当地移位信号的相位来稳定高频异相模式。 调节信号用于反馈控制回路以稳定执行器系统。

公开(公告)号：US06529344B1

公开(公告)日：2003-03-04

申请号：US09426425

申请日：1999-10-25

申请人： Naoyuki Kagami ,  Akira Tokizono

发明人： Naoyuki Kagami ,  Akira Tokizono

IPC分类号： G11B5596

CPC分类号： G11B5/59605

摘要： A method and system for compensating head positioning servo in a storage device. In accordance with the method and apparatus of the present invention, an open-loop gain of a head positioning servo is calculated when the head positioning servo causes a head to follow a predetermined position of a target track of a storage media surface by generating a position detecting signal utilizing a position detecting signal gain. A compensated position detecting signal gain is generated by compensating the position detecting signal gain according to a difference between a first predetermined value and the open-loop gain of the head positioning servo, such that variability of the position detecting signal and the open-loop gain is reduced to achieve stability in a head positioning servo.

摘要翻译： 一种用于补偿存储装置中的头部定位伺服的方法和系统。 根据本发明的方法和装置，当磁头定位伺服机构通过产生一个位置使磁头跟随存储介质表面的目标磁道的预定位置时，计算磁头定位伺服的开环增益 利用位置检测信号增益来检测信号。 通过根据第一预定值和头定位伺服的开环增益之间的差补偿位置检测信号增益来产生补偿位置检测信号增益，使得位置检测信号和开环增益的变化 减少了在头部定位伺服中的稳定性。

公开(公告)号：US06219196B1

公开(公告)日：2001-04-17

申请号：US09153199

申请日：1998-09-14

申请人： Tetsuo Semba ,  Naoyuki Kagami ,  Akira Tokizono

发明人： Tetsuo Semba ,  Naoyuki Kagami ,  Akira Tokizono

IPC分类号： G11B2102

CPC分类号： G11B5/596

摘要： The present invention teaches the realization of a stable feedback control by selecting an optimal notch filter in an apparatus, such as a hard disk drive, that employs a positioning apparatus, such as an actuator, for positioning an object. The present invention further teaches the derivation of a frequency characteristic of a control loop excluding a notch filter by employing a method that does not damage a positioning apparatus. The present invention further teaches the method of adjusting a notch filter in accordance with a change of the resonant frequency of an actuator caused by the temperature fluctuations to prevent any deterioration of a feedback control performance.

摘要翻译： 本发明教导了通过在诸如硬盘驱动器的装置中选择最佳陷波滤波器来实现稳定的反馈控制，该设备采用诸如致动器的定位装置来定位物体。 本发明还通过采用不损坏定位装置的方法来教导除了陷波滤波器之外的控制回路的频率特性的推导。 本发明进一步教导了根据由温度波动引起的致动器的谐振频率的变化来调整陷波滤波器的方法，以防止反馈控制性能的任何劣化。

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：US06707634B2

公开(公告)日：2004-03-16

申请号：US09950465

申请日：2001-09-10

申请人： Naoyuki Kagami ,  Masayuki Kanamaru ,  Shunichiroh Ohta ,  Akira Tokizono ,  Toshihiko Tsunokawa

发明人： Naoyuki Kagami ,  Masayuki Kanamaru ,  Shunichiroh Ohta ,  Akira Tokizono ,  Toshihiko Tsunokawa

IPC分类号： G11B3314

CPC分类号： G11B5/012 ,  G11B5/41 ,  G11B5/54 ,  G11B21/22 ,  G11B33/14 ,  G11B33/1446

摘要： A method and apparatus for use with a rotating storage device. The rotating storage device includes a storage medium driven to rotate, a head for reading and writing information on the storage medium and a ramped loading mechanism in which the head is stored. In accordance with the method of the present invention, the head is loaded from the ramped loading mechanism onto the storage medium. Next, location information stored in the storage medium via the head is read. A location of the head is then retained for a predetermined period above a track of a region other than a valid storage region of the storage medium after successfully reading the location information.

摘要翻译： 一种与旋转存储装置一起使用的方法和装置。 旋转存储装置包括被驱动旋转的存储介质，用于在存储介质上读取和写入信息的磁头以及其中存储磁头的倾斜加载机构。 根据本发明的方法，将头从斜坡加载机构装载到存储介质上。 接下来，读取通过头部存储在存储介质中的位置信息。 在成功读取位置信息之后，头部的位置被保持在存储介质的有效存储区域以外的区域的轨道上方的预定时段。

公开(公告)号：US06549349B2

公开(公告)日：2003-04-15

申请号：US09955391

申请日：2001-09-18

申请人： Sri Muthuthamby Sri-Jayantha ,  Arun Sharma ,  Hien Phu Dang ,  Naoyuki Kagami ,  Yuzo Nakagawa ,  Akira Tokizono ,  Isao Yoneda

发明人： Sri Muthuthamby Sri-Jayantha ,  Arun Sharma ,  Hien Phu Dang ,  Naoyuki Kagami ,  Yuzo Nakagawa ,  Akira Tokizono ,  Isao Yoneda

IPC分类号： G11B2736

CPC分类号： G11B21/106 ,  G11B5/59611

摘要： Methods and systems for detecting and correcting for undesirable vibrations impacting the servo systems in data storage devices. A detection technique is provided wherein a detection filter is configured to scan a position signal of the servo system across a range of frequencies, and, at each respective scanned frequency, record an amplitude associated therewith. The recorded amplitudes are examined to determine whether any exceed a threshold, thereby locating a peak frequency of the vibration. Using the detected peak frequency of the vibration, a corrective filter is configured to operate about the peak frequency of vibration, thereby reducing its impact on the position signal in the servo system. Optimum detection and correction filter structures are disclosed, as are techniques for addressing filter state vectors as initial conditions as the corrective filters are repeatedly engaged during successive settle-out and track follow cycles (between seeks), as are continuous adaptation techniques for changing vibration environments.

摘要翻译： 用于检测和校正影响数据存储设备中的伺服系统的不期望的振动的方法和系统。 提供了一种检测技术，其中检测滤波器被配置为扫描频率范围内的伺服系统的位置信号，并且在每个相应的扫描频率处记录与之相关联的振幅。 检查记录的振幅以确定是否有超过阈值，从而定位振动的峰值频率。 使用检测到的振动峰值频率，校正滤波器被配置为围绕振动的峰值频率运行，从而减小其对伺服系统中位置信号的影响。 公开了最佳检测和校正滤波器结构，作为用于将滤波器状态向量寻址作为初始条件的技术，校正滤波器在连续的稳定和跟踪周期（寻找之间）期间重复接合），以及用于改变振动环境的连续自适应技术 。