公开(公告)号：US08059356B2

公开(公告)日：2011-11-15

申请号：US12631729

申请日：2009-12-04

申请人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida ,  Takenori Atsumi

发明人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida ,  Takenori Atsumi

IPC分类号： G11B21/02

CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B5/59622

摘要： A disk drive. The disk drive includes a head, a moving mechanism, a first peak filter, an adaptive peak filter, and a filter controller. The head is configured to read servo data on a disk at sampling frequency. The moving mechanism is configured to move the head in proximity with a recording surface of the disk. The first peak filter has a fixed peak frequency and a variable gain, and is configured to be inserted into a servo loop. The servo loop is configured to position the head with position error signals between servo data read by the head and a target position. The adaptive peak filter has a variable peak frequency and a variable gain, and is configured to be inserted into the servo loop. The filter controller is configured to control the gain of the adaptive peak filter according to the gain of the first peak filter.

摘要翻译： 磁盘驱动器 磁盘驱动器包括磁头，移动机构，第一峰值滤波器，自适应峰值滤波器和滤波器控制器。 磁头被配置为以采样频率读取磁盘上的伺服数据。 移动机构被配置为使磁头靠近磁盘的记录表面移动。 第一峰值滤波器具有固定的峰值频率和可变增益，并被配置为插入到伺服环路中。 伺服回路被配置为在头部读取的伺服数据与目标位置之间定位头部位置误差信号。 自适应峰值滤波器具有可变的峰值频率和可变增益，并被配置为插入到伺服环路中。 滤波器控制器被配置为根据第一峰值滤波器的增益来控制自适应峰值滤波器的增益。

公开(公告)号：US20100142082A1

公开(公告)日：2010-06-10

申请号：US12631729

申请日：2009-12-04

申请人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida

发明人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida

IPC分类号： G11B21/02

CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B5/59622

摘要： A disk drive. The disk drive includes a head, a moving mechanism, a first peak filter, an adaptive peak filter, and a filter controller. The head is configured to read servo data on a disk at sampling frequency. The moving mechanism is configured to move the head in proximity with a recording surface of the disk. The first peak filter has a fixed peak frequency and a variable gain, and is configured to be inserted into a servo loop. The servo loop is configured to position the head with position error signals between servo data read by the head and a target position. The adaptive peak filter has a variable peak frequency and a variable gain, and is configured to be inserted into the servo loop. The filter controller is configured to control the gain of the adaptive peak filter according to the gain of the first peak filter.

摘要翻译： 磁盘驱动器 磁盘驱动器包括磁头，移动机构，第一峰值滤波器，自适应峰值滤波器和滤波器控制器。 磁头被配置为以采样频率读取磁盘上的伺服数据。 移动机构被配置为使磁头靠近磁盘的记录表面移动。 第一峰值滤波器具有固定的峰值频率和可变增益，并被配置为插入到伺服环路中。 伺服回路被配置为在头部读取的伺服数据与目标位置之间定位头部位置误差信号。 自适应峰值滤波器具有可变的峰值频率和可变增益，并被配置为插入到伺服环路中。 滤波器控制器被配置为根据第一峰值滤波器的增益来控制自适应峰值滤波器的增益。

公开(公告)号：US08737010B2

公开(公告)日：2014-05-27

申请号：US12876802

申请日：2010-09-07

申请人： Hiroshi Uchida ,  Isao Yoneda ,  Chikako Sakagami ,  Kazuhisa Shishida

发明人： Hiroshi Uchida ,  Isao Yoneda ,  Chikako Sakagami ,  Kazuhisa Shishida

IPC分类号： G11B5/596

CPC分类号： G11B5/59622

摘要： A disk drive comprising a head for accessing a disk, an actuator for moving the head in the radial direction of the disk and a controller. The controller for servo control of the actuator based on servo data read out from the disk by the head. The controller is configured for maintaining a width of the adaptive chasing notch filter below a specified value in servo system control and estimating an oscillation frequency of the actuator.

摘要翻译： 一种磁盘驱动器，包括用于访问磁盘的磁头，用于沿磁盘的径向移动磁头的致动器和控制器。 伺服控制器，用于伺服控制，基于从磁盘读出的伺服数据。 控制器被配置为在伺服系统控制中将自适应追赶陷波滤波器的宽度保持在指定值以下，并且估计致动器的振荡频率。

公开(公告)号：US20110058276A1

公开(公告)日：2011-03-10

申请号：US12876802

申请日：2010-09-07

申请人： Hiroshi Uchida ,  Isao Yoneda ,  Chikako Sakagami ,  Kazuhisa Shishida

发明人： Hiroshi Uchida ,  Isao Yoneda ,  Chikako Sakagami ,  Kazuhisa Shishida

IPC分类号： G11B5/596

CPC分类号： G11B5/59622

摘要： A disk drive comprising a head for accessing a disk, an actuator for moving the head in the radial direction of the disk and a controller. The controller for servo control of the actuator based on servo data read out from the disk by the head. The controller is configured for maintaining a width of the adaptive chasing notch filter below a specified value in servo system control and estimating an oscillation frequency of the actuator.

摘要翻译： 一种磁盘驱动器，包括用于访问磁盘的磁头，用于沿磁盘的径向移动磁头的致动器和控制器。 伺服控制器，用于伺服控制，基于从磁盘读出的伺服数据。 控制器被配置为在伺服系统控制中将自适应追赶陷波滤波器的宽度保持在指定值以下，并且估计致动器的振荡频率。

公开(公告)号：US08553348B2

公开(公告)日：2013-10-08

申请号：US12824160

申请日：2010-06-26

申请人： Isao Yoneda ,  Kazuhisa Shishida ,  Chikako Sakagami ,  Katsuhiko Ohta ,  Kenji Okada

发明人： Isao Yoneda ,  Kazuhisa Shishida ,  Chikako Sakagami ,  Katsuhiko Ohta ,  Kenji Okada

IPC分类号： G11B21/02

CPC分类号： G11B5/59622

摘要： A disk drive. The disk drive includes a head, an actuator, and a controller. The head accesses a disk. The actuator is configured to support the head and to move the head by action of a voice-coil motor in a substantially radial direction of the disk. The controller is also configured to perform servo control of the actuator by using servo data read out by the head. The controller includes at least one of a plurality of notch filters having a fixed center frequency inserted in a servo-control loop. The controller is configured to increase an attenuation rate by at least one of the plurality of notch filters having the fixed center frequency at a designated frequency, when a target position of the head is at a position selected from the group consisting of a position outside of a specified region and a position within the specified region.

摘要翻译： 磁盘驱动器 磁盘驱动器包括磁头，致动器和控制器。 磁头访问磁盘。 致动器被构造成支撑头部并且通过音圈电动机在盘的大致径向方向上的动作来移动头部。 控制器还被配置为通过使用由头读出的伺服数据来执行致动器的伺服控制。 控制器包括插入伺服控制回路中的具有固定的中心频率的多个陷波滤波器中的至少一个。 控制器被配置为当头部的目标位置处于从包括位于外部位置之外的位置的位置时，以具有指定频率的固定中心频率的多个陷波滤波器中的至少一个增加衰减率 指定区域和指定区域内的位置。

公开(公告)号：US20100328810A1

公开(公告)日：2010-12-30

申请号：US12824160

申请日：2010-06-26

申请人： Isao Yoneda ,  Kazuhisa Shishida ,  Chikako Sakagami ,  Katsuhiko Ohta ,  Kenji Okada

发明人： Isao Yoneda ,  Kazuhisa Shishida ,  Chikako Sakagami ,  Katsuhiko Ohta ,  Kenji Okada

IPC分类号： G11B21/02

CPC分类号： G11B5/59622

摘要： A disk drive. The disk drive includes a head, an actuator, and a controller. The head accesses a disk. The actuator is configured to support the head and to move the head by action of a voice-coil motor in a substantially radial direction of the disk. The controller is also configured to perform servo control of the actuator by using servo data read out by the head. The controller includes at least one of a plurality of notch filters having a fixed center frequency inserted in a servo-control loop. The controller is configured to increase an attenuation rate by at least one of the plurality of notch filters having the fixed center frequency at a designated frequency, when a target position of the head is at a position selected from the group consisting of a position outside of a specified region and a position within the specified region.

摘要翻译： 磁盘驱动器 磁盘驱动器包括磁头，致动器和控制器。 磁头访问磁盘。 致动器被构造成支撑头部并且通过音圈电动机在盘的大致径向方向上的动作来移动头部。 控制器还被配置为通过使用由头读出的伺服数据来执行致动器的伺服控制。 控制器包括插入伺服控制回路中的具有固定的中心频率的多个陷波滤波器中的至少一个。 控制器被配置为当头部的目标位置处于从包括位于外部位置之外的位置的位置时，以具有指定频率的固定中心频率的多个陷波滤波器中的至少一个增加衰减率 指定区域和指定区域内的位置。