公开(公告)号：US07564641B2

公开(公告)日：2009-07-21

申请号：US11590725

申请日：2006-10-31

申请人： Mitsuo Kamimura ,  Fumiya Kudo ,  Yukio Abe ,  Atsushi Suzuki ,  Takeshi Hara

发明人： Mitsuo Kamimura ,  Fumiya Kudo ,  Yukio Abe ,  Atsushi Suzuki ,  Takeshi Hara

IPC分类号： G11B21/02 ,  G11B5/596

CPC分类号： G11B19/20

摘要： When a head is subjected to external vibration while a controller is controlling the head according to a positioning-oriented controller characteristic, the positioning-oriented controller characteristic are changed to a vibration-reducing controller characteristic. Moreover, when the external vibration stop while the controller is controlling the head according to the vibration-reducing controller characteristic, the vibration-reducing controller characteristic are changed to the positioning-oriented controller characteristic.

摘要翻译： 当控制器根据定位导向控制器特性来控制头部时头受到外部振动时，将定位控制器特性改变为减振控制器特性。 此外，当控制器根据减振控制器特性控制头时外部振动停止时，减振控制器特性被改变为面向定位控制器的特性。

公开(公告)号：US07500538B2

公开(公告)日：2009-03-10

申请号：US11587972

申请日：2005-04-15

申请人： Takeshi Hara ,  Shuji Endo

发明人： Takeshi Hara ,  Shuji Endo

IPC分类号： B62D5/00 ,  B62D7/00

CPC分类号： B62D5/049

摘要： It is an object of the present invention to provide a control unit for an electric power steering apparatus for accurately detecting an abnormality of a steering angle sensor without forming the steering angle sensor as a double system or using an expensive position detection sensor. The object is achieved by calculating a relative steering angle by using inexpensive position detection sensors disposed at a motor of the electric power steering apparatus to output binary values and comparing a change amount of an absolute steering angle detected by the steering angle sensor and a change amount of the calculated relative steering angle with each other to thereby detect the abnormality of the steering angle sensor.

摘要翻译： 本发明的目的是提供一种用于电动助力转向装置的控制单元，用于在不形成作为双重系统的转向角传感器或者使用昂贵的位置检测传感器的情况下，精确地检测转向角传感器的异常。 该目的是通过使用设置在电动助力转向装置的电动机上的便宜的位置检测传感器来计算相对转向角来输出二进制值并将由转向角传感器检测的绝对转向角的变化量与变化量 计算出的相对转向角彼此相对，从而检测转向角传感器的异常。

公开(公告)号：US20090059419A1

公开(公告)日：2009-03-05

申请号：US12175130

申请日：2008-07-17

申请人： Takeshi Hara ,  Yoshifumi Obara ,  Shigenori Yanagi

发明人： Takeshi Hara ,  Yoshifumi Obara ,  Shigenori Yanagi

IPC分类号： G11B5/58

CPC分类号： G11B5/5526 ,  G11B5/59633 ,  G11B5/59688

摘要： According to an aspect of an embodiment, an apparatus, includes: a medium having inner and outer edges and including first and second servo regions extending radially, and containing first and second servo information written thereon, respectively, the first servo region extending outwardly from the inner edge to cover tracks, the first and second servo region having positioned adjacently across a circular boundary; a head for reading out said first servo information and said second servo information; and a processor for executing a process comprising: reading out the first or second servo information; and when controlling the track position across the boundary, adjusting the relation of the first and second servo information across the boundary in control the track position.

摘要翻译： 根据实施例的一个方面，一种装置包括：具有内边缘和外边缘并且包括第一和第二伺服区域径向延伸并且分别包含第一和第二伺服信息的介质，所述第一和第二伺服区域分别从其上写入， 内边缘覆盖轨道，第一和第二伺服区域相邻地定位在圆形边界上; 用于读出所述第一伺服信息和所述第二伺服信息的头; 以及用于执行处理的处理器，包括：读出所述第一或第二伺服信息; 并且当控制跨越边界的轨道位置时，在控制轨迹位置时调整跨越边界的第一和第二伺服信息的关系。

公开(公告)号：US07486466B2

公开(公告)日：2009-02-03

申请号：US11584720

申请日：2006-10-20

申请人： Takeshi Hara ,  Yoshifumi Obara

发明人： Takeshi Hara ,  Yoshifumi Obara

IPC分类号： G11B21/02

CPC分类号： G11B5/54 ,  G11B21/12 ,  G11B21/22

摘要： A storage medium (magnetic disk) in a storage device (magnetic disk device) includes a disk that stores therein data, a head that reads and writes data, a voice motor coil (VCM) that controls the head, and a ramp where the head is retracted. The storage device detects a current used for speed control during unloading of the head, and determines whether the current exceeds a predetermined value. The storage device detects a head position where the current exceeds a predetermined value as a ramp position, stores the ramp position, and unloads the head based on the ramp position.

摘要翻译： 存储装置（磁盘装置）中的存储介质（磁盘）包括其中存储有数据的磁盘，读取和写入数据的磁头，控制磁头的语音电机线圈（VCM）以及磁头 被收回。 存储装置检测在头部卸载期间用于速度控制的电流，并且确定电流是否超过预定值。 存储装置检测电流超过预定值的磁头位置作为斜坡位置，存储斜坡位置，并且基于斜坡位置卸载磁头。

公开(公告)号：US07420761B2

公开(公告)日：2008-09-02

申请号：US11586939

申请日：2006-10-26

申请人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi

发明人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B21/12 ,  G11B5/54 ,  G11B19/043

摘要： A falling-time measuring unit measures time for which a fall of a storage device is consecutively detected by a fall detecting sensor. A head-position detecting unit detects a position of the head on a storage medium at a time of starting measuring the time. A moving-time calculating unit calculates necessary time for moving the head from the detected position to a destination position. A first-threshold determining unit determines whether the measured time exceeds a threshold calculated by a threshold calculating unit. A head-movement processing unit moves the head to the destination position when it is determined that the measured time exceeds the first threshold.

摘要翻译： 下降时间测量单元测量由跌倒检测传感器连续检测存储设备的下降的时间。 头位置检测单元在开始测量时间时检测头在存储介质上的位置。 移动时间计算单元计算用于将头从检测位置移动到目的位置的必要时间。 第一阈值确定单元确定所测量的时间是否超过由阈值计算单元计算出的阈值。 当确定测量时间超过第一阈值时，头部移动处理单元将头移动到目的位置。

公开(公告)号：US20070291396A1

公开(公告)日：2007-12-20

申请号：US11586939

申请日：2006-10-26

申请人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi

发明人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B21/12 ,  G11B5/54 ,  G11B19/043

摘要： A falling-time measuring unit measures time for which a fall of a storage device is consecutively detected by a fall detecting sensor. A head-position detecting unit detects a position of the head on a storage medium at a time of starting measuring the time. A moving-time calculating unit calculates necessary time for moving the head from the detected position to a destination position. A first-threshold determining unit determines whether the measured time exceeds a threshold calculated by a threshold calculating unit. A head-movement processing unit moves the head to the destination position when it is determined that the measured time exceeds the first threshold.

摘要翻译： 下降时间测量单元测量由跌倒检测传感器连续检测存储设备的下降的时间。 头位置检测单元在开始测量时间时检测头在存储介质上的位置。 移动时间计算单元计算用于将头从检测位置移动到目的位置的必要时间。 第一阈值确定单元确定所测量的时间是否超过由阈值计算单元计算出的阈值。 当确定测量时间超过第一阈值时，头部移动处理单元将头移动到目的位置。

公开(公告)号：US20070291395A1

公开(公告)日：2007-12-20

申请号：US11586833

申请日：2006-10-26

申请人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi ,  Yukio Abe ,  Takao Abe

发明人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi ,  Yukio Abe ,  Takao Abe

IPC分类号： G11B21/02

CPC分类号： G11B21/12 ,  G11B5/54

摘要： A retraction control unit controls a retraction of a head of a storage device to a retraction position apart from a ramp by a predetermined distance. When the head is retracted from the retraction position to the ramp, a speed control unit controls a speed of the head to ascend the ramp to be constant by outputting a preset control signal.

摘要翻译： 退避控制单元控制存储装置的头部到远离斜坡的缩回位置缩回预定距离。 当头部从缩回位置缩回到斜坡时，速度控制单元通过输出预设控制信号来控制头部的速度上升到斜坡以恒定。

公开(公告)号：US20070291393A1

公开(公告)日：2007-12-20

申请号：US11583694

申请日：2006-10-18

申请人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi

发明人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B5/54 ,  G11B5/5582

摘要： A head retracting apparatus retracts a head on a storage medium upon detecting a fall. A counter-value calculating unit calculates a counter value that changes with an increase of a falling time and an increase of a non-falling time. A retraction determining unit determines whether to retract the head, based on the calculated counter value.

摘要翻译： 检测到坠落时，头部缩回装置将头部缩回到存储介质上。 计数器计算单元计算随着下降时间的增加和非下降时间的增加而变化的计数器值。 退回确定单元基于所计算的计数器值来确定是否缩回头部。

公开(公告)号：US20070263312A1

公开(公告)日：2007-11-15

申请号：US11880170

申请日：2007-07-20

申请人： Takeshi Hara ,  Hiroshi Oyabu

发明人： Takeshi Hara ,  Hiroshi Oyabu

IPC分类号： G11B19/02 ,  G11B15/18

CPC分类号： G11B5/5556 ,  G11B5/4555 ,  G11B5/59688

摘要： Track pitches of all the tracks of a disk medium provided in a storage apparatus are examined in a manufacturing examination step. First of all, a target position path which varies a target track position so that the position crosses the tracks is generated, and a head actuator is subjected to feedback control so that head detection positions track the target position path. Track pitch abnormality is determined when an error between the target position path and the head detection positions exceeds a predetermined threshold value, and the track number is recorded in a track skip table of the medium. As the target position path, a target position sine-wave path having the amplitude of the width of plural tracks is generated in synchronization with rotation of the medium. As another target position path, a target position straight-line path which passes each track interval in certain time between the outermost and the innermost of the medium is generated.

摘要翻译： 在制造检查步骤中检查设置在存储装置中的盘介质的所有轨道的轨道间距。 首先，产生使目标轨迹位置变化以使得位置越过轨道的目标位置路径，并且对头致动器进行反馈控制，使得头部检测位置跟踪目标位置路径。 当目标位置路径和头部检测位置之间的误差超过预定阈值时确定轨道间距异常，并且轨道号被记录在介质的轨道跳过表中。 作为目标位置路径，与介质的旋转同步地产生具有多个轨道的宽度的幅度的目标位置正弦波路径。 作为另一个目标位置路径，产生在介质的最外侧和最内侧之间的特定时间内通过每个轨迹间隔的目标位置直线路径。

公开(公告)号：US20070233345A1

公开(公告)日：2007-10-04

申请号：US11730226

申请日：2007-03-30

申请人： Shuji Endo ,  Takeshi Hara

发明人： Shuji Endo ,  Takeshi Hara

IPC分类号： B62D6/00

CPC分类号： B62D5/049 ,  B62D15/0215 ,  B62D15/0235 ,  B62D15/0245

摘要： To provide an electric power steering device that can reliably detect the abnormality of a steering angle sensor and prevent the generation of a wrong decision. When both the two differences (|θa−θr |, |θa−θe|) between an absolute steering angle value θa obtained from a steering angle sensor and a relative steering angle value θr estimated from the rotating angle sensor of a motor, and an estimated steering angle value ee estimated from the induced voltage of the motor respectively exceed predetermined values (threshold values), the steering angle sensor is determined to be failed.

摘要翻译： 提供能够可靠地检测转向角传感器的异常并防止产生错误判定的电动助力转向装置。 当从转向角传感器获得的绝对转向角值θa和从电动机的旋转角度传感器估计的相对转向角值之间的两个差异（|θa-thetar |，|θa-θe|）和 根据电机的感应电压估计的估计转向角值ee分别超过预定值（阈值），确定转向角传感器失败。