公开(公告)号：JP2003346439A

公开(公告)日：2003-12-05

申请号：JP2002156406

申请日：2002-05-29

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーション

Inventor： SENBA TETSUO ,  KAGAMI NAOYUKI ,  TOKIZONO AKIRA ,  IKEDO MANABU

IPC: G11B21/10 ,  G11B5/55

CPC classification number: G11B5/5526 ,  G11B5/5582

Abstract: PROBLEM TO BE SOLVED: To effectively prevent erroneous operation in the correcting operation based on the sensor output by dynamically controlling a gain of a sensor.
SOLUTION: The device is furnished with a servo control part 10 constituting a servo loop for the seek of a head for reading and writing data with respect to a recording medium, a correction signal generation part 20 for generating the correction signal to correct the control by this servo control part 10 on the basis of the output of the specified sensor, and a correction signal control part 30 for predicting the effect obtained when this correction signal is injected to the servo loop and controlling whether this corrected signal is injected to the servo loop or not in accordance with the predicted result. Also, the gain of the sensor is dynamically controlled in accordance with the above predicted result.
COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：通过动态地控制传感器的增益，有效地防止基于传感器输出的校正操作中的错误操作。 解决方案：该装置配有一个伺服控制部件10，该伺服控制部件10构成一个伺服回路，用于寻找一个相对于记录介质读取和写入数据的头部;校正信号产生部分20，用于产生校正信号以校正 该伺服控制部10基于指定的传感器的输出进行的控制，以及校正信号控制部30，用于预测当将该校正信号注入伺服回路时获得的效果，并控制是否将该校正信号注入到 伺服回路或不符合预测结果。 此外，传感器的增益根据上述预测结果动态地控制。 版权所有（C）2004，JPO

公开(公告)号：JP2003317465A

公开(公告)日：2003-11-07

申请号：JP2002121350

申请日：2002-04-23

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーション

Inventor： IKEDO MANABU ,  HOSONO YOSHITAMA ,  KAKIZAKI YOSHITAKA ,  KAGAMI NAOYUKI

IPC: G11B33/14 ,  G11B21/08 ,  G11B21/10 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12

CPC classification number: G11B33/121 ,  G11B25/043 ,  G11B33/08

Abstract: PROBLEM TO BE SOLVED: To improve detection accuracy for vibration in the direction of rotation by eliminating influence in the direction of thickness of a HDD1.
SOLUTION: Acceleration sensors 20a, 20d are arranged in a region formed by connecting screws 22a-22d attaching a circuit substrate 12 to a base 2 and arranged near the screws 22c and 22d.
COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：通过消除HDD1的厚度方向的影响来提高旋转方向的振动的检测精度。 解决方案：加速度传感器20a，20d布置在通过将电路基板12连接到基座2并布置在螺钉22c和22d附近的螺钉22a-22d形成的区域中。 版权所有（C）2004，JPO

公开(公告)号：JP2001101784A

公开(公告)日：2001-04-13

申请号：JP27332799

申请日：1999-09-27

Applicant: IBM

Inventor： IKEDO MANABU ,  YUZUBA AKINORI ,  KAGAMI NAOYUKI

IPC: G11B21/12 ,  G11B19/28

Abstract: PROBLEM TO BE SOLVED: To provide a load/unload type disk driver that can control motor revolution with high accuracy after a head is loaded in the load/unload type disk driver. SOLUTION: Since a slew rate is switched in cross-reference with loading/ unloading of the head, the operating noise sound of the motor can be reduced at a steady-state rotation and the rotational speed can be controlled with high accuracy on the occurrence of a load fluctuation of the spindle motor due to loading of the head.