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1. 发明授权

US08582230B2 Hard disk drive, method for estimating back electromotive force, and method for controlling velocity of head 有权
标题翻译：硬盘驱动器，用于估计反电动势的方法以及用于控制磁头速度的方法
公开(公告)号：US08582230B2
公开(公告)日：2013-11-12
申请号：US13232253
申请日：2011-09-14
申请人： Shigen Yasunaka , Shinji Takakura , Yoshiyuki Ishihara
发明人： Shigen Yasunaka , Shinji Takakura , Yoshiyuki Ishihara
IPC分类号： G11B21/02
CPC分类号： G11B5/5526 , G11B21/12
摘要： According to one embodiment, a hard disk drive includes a head, a voice coil motor, a driving circuit, an identification unit, a storage unit, and an estimation unit. The head is configured to perform write/read of information to a storage medium. The voice coil motor is configured to move the head. The driving circuit is configured to drive the voice coil motor, based on a command signal. The identification unit is configured to identify at least one parameter of a discrete-time model. The discrete-time model represents a transfer function from the command signal to a voltage drop quantity by an inductance of a coil of the voice coil motor. The storage unit is configured to store the parameter. The estimation unit is configured to estimate a back electromotive force of the coil, based on the discrete-time model including the parameter.
摘要翻译：根据一个实施例，硬盘驱动器包括头，音圈电机，驱动电路，识别单元，存储单元和估计单元。头被配置为执行向存储介质的信息的写入/读取。音圈电机被配置为移动头部。驱动电路被配置为基于命令信号来驱动音圈电机。识别单元被配置为识别离散时间模型的至少一个参数。离散时间模型表示通过音圈电机的线圈的电感从指令信号到电压降量的传递函数。存储单元被配置为存储参数。估计单元被配置为基于包括参数的离散时间模型来估计线圈的反电动势。

2. 发明申请

US20130070368A1 MAGNETIC DISK DEVICE AND CONTROLLING METHOD OF HEAD 审中-公开
标题翻译：磁盘设备及其控制方法
公开(公告)号：US20130070368A1
公开(公告)日：2013-03-21
申请号：US13424576
申请日：2012-03-20
申请人： Shinji Takakura , Shigen Yasunaka , Yoshiyuki Ishihara
发明人： Shinji Takakura , Shigen Yasunaka , Yoshiyuki Ishihara
IPC分类号： G11B21/02
CPC分类号： G11B21/12
摘要： A magnetic disk device includes a head, a coil, a drive circuit, a detector, a first calculation unit, a generation unit, a first estimation unit, and a control unit. The detector detects an inter-terminal voltage across the coil. The first calculation unit calculates a back electromotive force across the coil by the use of the inter-terminal voltage. The generation unit generates a target velocity as a reference value of a velocity of the head. The first estimation unit estimates a first velocity of the head and an error of the first velocity by the use of the back electromotive force. The first estimation unit estimates a second velocity for decreasing the error. The control unit calculates a control instruction to bring the second velocity close to the target velocity.
摘要翻译：磁盘装置包括头，线圈，驱动电路，检测器，第一计算单元，生成单元，第一估计单元和控制单元。检测器检测线圈两端的电压。第一计算单元通过使用端子间电压来计算跨线圈的反电动势。生成单元生成目标速度作为头部的速度的基准值。第一估计单元通过使用反电动势来估计头的第一速度和第一速度的误差。第一估计单元估计用于减小误差的第二速度。控制单元计算使第二速度接近目标速度的控制指令。

3. 发明申请

US20130030743A1 METHOD FOR IDENTIFYING HIGH-SPEED FREQUENCY RESPONSE OF MULTIRATE SYSTEM AND APPARATUS THEREFOR 有权
标题翻译：识别多路复用系统高速响应的方法及其设备
公开(公告)号：US20130030743A1
公开(公告)日：2013-01-31
申请号：US13418460
申请日：2012-03-13
申请人： Yoshiyuki Ishihara , Shinji Takakura
发明人： Yoshiyuki Ishihara , Shinji Takakura
IPC分类号： G01R23/16 , G06F19/00
CPC分类号： G11B20/10009 , G11B5/5521
摘要： There is provided with a method of identifying a frequency response of a controlled object at a sampling period of control input in a multiplexed-input multirate system in which a sampling period of control output is even “P” multiples of the sampling period of control input wherein the control object is represented by FIR filter, an M-series signal corresponding to an acquisition data length Mp×P−1 is generated, the Mp indicates a period of the M-series signal, an impulse response value of the controlled object is estimated based on the M-series signal and output data outputted from the controlled object by inputting the M-series signal thereto, and the frequency response of the controlled object is identified by performing a discrete Fourier transform on the impulse response value.
摘要翻译：提供了一种在多路复用输入多速率系统中的控制输入的采样周期识别受控对象的频率响应的方法，其中控制输出的采样周期甚至控制输入的采样周期的P倍数，其中控制对象由FIR滤波器表示，产生与采集数据长度Mp×P-1对应的M序列信号，Mp表示M系列信号的周期，基于受控对象的脉冲响应值进行估计通过向其输入M系列信号对从M受控对象输出的M序列信号和输出数据，通过对脉冲响应值执行离散付里叶变换来识别受控对象的频率响应。

4. 发明授权

US07929242B2 Magnetic disk apparatus and method for controlling magnetic head 有权
标题翻译：磁盘装置及磁头控制方法
公开(公告)号：US07929242B2
公开(公告)日：2011-04-19
申请号：US12257062
申请日：2008-10-23
申请人： Shinji Takakura
发明人： Shinji Takakura
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/5547
摘要： A magnetic disk apparatus includes: a driving section for moving a magnetic head recoding and reproducing information in a magnetic disk; and a controller for controlling the driving section. The controller includes: a position-error feedback control system having an integrator and a phase lead compensator and obtaining a position command based on difference between target position and detection position of the magnetic head to perform feedback control of the driving section; and a two-freedom-degree control system inputting a target move distance of the magnetic head and outputting a current command to the driving section by using a mathematic model of the driving section. The controller providing the driving section with an output of the integrator and therewith updating the mathematical model by using an output of the phase lead compensator, in each of the times of positioning control and seek of the magnetic head.
摘要翻译：磁盘装置包括：驱动部分，用于使磁头在磁盘中重新编码和再现信息; 以及用于控制所述驱动部的控制器。控制器包括：具有积分器和相位超前补偿器的位置误差反馈控制系统，并且基于目标位置和磁头的检测位置之间的差异获得位置指令，以执行驱动部分的反馈控制; 以及输入磁头的目标移动距离的双自由度控制系统，并通过使用所述驱动部的数学模型向所述驱动部输出电流指令。控制器为驱动部分提供积分器的输出，并且在定位控制和寻找磁头的每一次中通过使用相位超前补偿器的输出来更新数学模型。

5. 发明授权

US07848050B2 Positioning control system and method therefor 有权
标题翻译：定位控制系统及其方法
公开(公告)号：US07848050B2
公开(公告)日：2010-12-07
申请号：US12393260
申请日：2009-02-26
申请人： Yoshiyuki Ishihara , Shinji Takakura
发明人： Yoshiyuki Ishihara , Shinji Takakura
IPC分类号： G11B5/596
CPC分类号： G11B5/59622
摘要： There is provided with a positioning control system which includes: a head moving unit configured to move a head for recording or reproducing information with respect to a disk capable of recording information; a position detecting unit configured to detect a position of the head; an error detecting unit configured to detect a position error signal of a detected head position with respect to a predetermined target position; a compensation controller configured to generate control input by performing phase lead compensation and phase delay compensation for the position error signal and supply the control input to the head moving unit; and a gain controller configured to control at least one of gains the phase lead compensation and the phase delay compensation based on frequency components contained in the position error signal and an amplitude of the position error signal.
摘要翻译：提供了一种定位控制系统，其包括：头部移动单元，被配置为相对于能够记录信息的盘移动用于记录或再现信息的头部; 位置检测单元，被配置为检测头部的位置; 错误检测单元，被配置为检测相对于预定目标位置的检测到的头位置的位置误差信号; 补偿控制器，被配置为通过对位置误差信号执行相位超前补偿和相位延迟补偿来产生控制输入，并将控制输入提供给头部移动单元; 以及增益控制器，被配置为基于位置误差信号中包含的频率分量和位置误差信号的振幅来控制相位超前补偿和相位延迟补偿的增益中的至少一个。

6. 发明申请

US20100079910A1 MAGNETIC DISK APPARATUS AND INFORMATION REPRODUCING METHOD 有权
标题翻译：磁盘设备和信息再现方法
公开(公告)号：US20100079910A1
公开(公告)日：2010-04-01
申请号：US12542100
申请日：2009-08-17
申请人： Yasushi Tomizawa , Kohsuke Harada , Hiroaki Nakamura , Yoshiyuki Ishihara , Shinji Takakura
发明人： Yasushi Tomizawa , Kohsuke Harada , Hiroaki Nakamura , Yoshiyuki Ishihara , Shinji Takakura
IPC分类号： G11B5/127 , G11B5/82
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/02 , G11B5/743 , G11B5/746 , G11B2005/0005
摘要： A magnetic disk apparatus includes a magnetic disk that includes a plurality of zones in which a plurality of tracks are arranged for each of circumferences of a spiral, and gaps that are arranged between the zones to have a width a predetermined number of times larger than a track width and that are regions without providing recording bits; and a reproducing element that simultaneously makes an access to the recording bits contained in the tracks, reading information stored in the recording bits, wherein the number of the tracks is one or larger and a sum of one and the predetermined number or smaller in one of the zones.
摘要翻译：磁盘装置包括磁盘，该磁盘包括多个区域，其中为每个螺旋周期布置多个轨道，以及布置在该区域之间的间隙，其宽度大于一个轨道宽度，并且是不提供记录位的区域; 以及再现元件，其同时访问包含在轨道中的记录位，读取存储在记录位中的信息，其中轨道的数量是一个或者更多，并且一个和一个之和的和之和小于区域。

7. 发明授权

US07646560B2 Positioning control system and positioning control method 有权
标题翻译：定位控制系统和定位控制方法
公开(公告)号：US07646560B2
公开(公告)日：2010-01-12
申请号：US12206105
申请日：2008-09-08
申请人： Yoshiyuki Ishihara , Shinji Takakura
发明人： Yoshiyuki Ishihara , Shinji Takakura
IPC分类号： G11B5/596
CPC分类号： G11B5/5547
摘要： There is provided with a positioning control system including: a head moving unit; a position detecting unit detecting a head position at predetermined time intervals; an error detecting unit detecting a position error of the head for a target position; a disturbance detecting unit detecting a non-periodic disturbance; a modifying unit modifying a first position error signal corresponding to a first head position detected in a first rotation period based on a second position error signal corresponding to a second head position detected one period length before; and a feedback controller, wherein the modifying unit modifies the first signal after reducing an amplitude of the second position error signal when a detected timing of the second head position is included in a predetermined time range with respect to a detected timing of the non-periodic disturbance detected in a second rotation period which is one period before the first rotation period.
摘要翻译：提供了一种定位控制系统，包括：头移动单元; 位置检测单元，以预定的时间间隔检测头部位置; 检测针对目标位置的头部的位置误差的误差检测单元; 检测非周期性扰动的扰动检测单元; 修改单元，基于与检测到的一个周期长度之前的第二头部位置相对应的第二位置误差信号，修改与在第一旋转周期中检测到的第一头位置对应的第一位置误差信号; 以及反馈控制器，其中当相对于非周期性的检测到的定时在预定时间范围内包括检测到的第二头位置的定时时，修改单元在减小第二位置误差信号的幅度之后修改第一信号在第一旋转周期之前的一个周期的第二旋转周期中检测到干扰。

8. 发明授权

US07477477B2 Hard disk drive and command execution method 有权
标题翻译：硬盘驱动器和命令执行方法
公开(公告)号：US07477477B2
公开(公告)日：2009-01-13
申请号：US11858354
申请日：2007-09-20
申请人： Kohei Maruchi , Shinji Takakura , Mitsunobu Yoshida , Toshikatsu Akiba , Hiroaki Nakamura
发明人： Kohei Maruchi , Shinji Takakura , Mitsunobu Yoshida , Toshikatsu Akiba , Hiroaki Nakamura
IPC分类号： G11B5/596 , G06F12/00 , G06F7/04
CPC分类号： G11B5/5521 , G06F3/0613 , G06F3/0619 , G06F3/0659 , G06F3/068
摘要： There is provided with command execution method, including; detecting a use situation of a non-volatile memory; selecting, when the use situation is low, the command which enables the disk head to be located at a start position of writing or reading most rapidly from among the write commands and the read commands assuming that the disk head performs the fast seek for the write command and the slow seek for the read command; selecting, when the use situation of the non-volatile memory is high, the command which enables the disk head to be located at the start position of writing or reading most rapidly from among the write commands and the read commands assuming that the disk head performs the slow seek.
摘要翻译：提供了命令执行方法，包括检测非易失性存储器的使用情况; 当使用情况低时，选择使得盘头位于从写入命令和读取命令中最快速地写入或读取的开始位置的命令，假定磁盘头执行用于写入的快速寻道命令和缓慢寻找读命令; 当非易失性存储器的使用状况很高时，选择使得盘头位于写入命令和读取命令之中的最快速写入或读取的开始位置的命令，假定磁盘头执行缓慢寻求。

9. 发明申请

US20080068743A1 Information recording/reproducing device 失效
标题翻译：信息记录/再现装置
公开(公告)号：US20080068743A1
公开(公告)日：2008-03-20
申请号：US11895378
申请日：2007-08-24
申请人： Koichi Kubo , Takahira Hirai , Shinya Aoki , Akihiro Koga , Junichi Akiyama , Shinji Takakura , Hiroaki Nakamura
发明人： Koichi Kubo , Takahira Hirai , Shinya Aoki , Akihiro Koga , Junichi Akiyama , Shinji Takakura , Hiroaki Nakamura
IPC分类号： G11B5/596
CPC分类号： G11B9/02 , B82Y10/00 , G11B9/1481
摘要： An information recording/reproducing device according to an example of the present invention includes first and second heads, a recording medium having a data area from which recording data is read by the first head and a servo burst area from which a servo burst signal is read by the second head, a driver which performs positioning of the second head based on the servo burst signal, and a resistor which covers a surface of the servo burst area and does not cover a surface of the data area. The recording data and the servo burst signal are recorded by a pulse signal.
摘要翻译：根据本发明的示例的信息记录/再现装置包括第一和第二磁头，具有数据区的记录介质，由第一磁头读取记录数据和读取伺服脉冲信号的伺服脉冲串区域通过第二头，基于伺服突发信号执行第二头的定位的驱动器，以及覆盖伺服突发区域的表面并且不覆盖数据区域的表面的电阻器。记录数据和伺服脉冲信号由脉冲信号记录。

10. 发明申请

US20070265714A1 MAGNETIC DISK DEVICE AND HEAD-POSITION CONTROL METHOD 有权
标题翻译：磁盘设备和头位控制方法
公开(公告)号：US20070265714A1
公开(公告)日：2007-11-15
申请号：US11687706
申请日：2007-03-19
申请人： Shinji Takakura
发明人： Shinji Takakura
IPC分类号： G05B13/02
CPC分类号： G05B13/041
摘要： A feedback controller performs a feedback control based on an error between a target position and an actual position of a head. A model controller obtains a control command, a model position to be output as a command for the target position to the feedback controller, and a model velocity for the head to follow a target velocity, by using a preset control equation model, and obtains the control command and the model position with the target position as an input, based on a differential value of the target velocity corresponding to a remaining distance from the model position to the target position.
摘要翻译：反馈控制器基于目标位置与头部的实际位置之间的误差执行反馈控制。模型控制器通过使用预设的控制方程模型获得控制命令，要作为目标位置的命令输出到反馈控制器的模型位置以及头部跟随目标速度的模型速度，并获得基于与从模型位置到目标位置的剩余距离对应的目标速度的差分值，将目标位置作为输入的控制命令和模型位置。

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