Title:
多重サイン波形のシークサーボでのトルク定数の補正方法及びディスクドライブ
Document Type and Number:
Japanese Patent JP4807498
Kind Code:
B2
Abstract:
A disk drive control method and apparatus. In particular, a torque constant correction method and apparatus in a disk drive using a multiple sinusoidal seek servo scheme. The torque constant correction method includes: performing a test seek routine for torque constant correction by using a multiple sinusoidal seek scheme; storing a seek driving current trajectory value for driving a voice coil motor, the seek driving current trajectory value being generated from the test seek routine; calculating a primary harmonic sinusoidal coefficient by performing a discrete Fourier transformation on the driving current trajectory value; calculating a primary harmonic sinusoidal coefficient from a multiple-sinusoidal-seek design current trajectory applied to the test seek; and defining a torque constant correction value as a ratio of the primary harmonic sinusoidal coefficient calculated by performing the discrete Fourier transformation to the primary harmonic sinusoidal coefficient calculated from a multiple-sinusoidal-seek design current trajectory.
Inventors:
Lee Nakaho
Chung Huang
Chung Huang
Application Number:
JP2006007862A
Publication Date:
November 02, 2011
Filing Date:
January 16, 2006
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
G11B21/08
Domestic Patent References:
JP10188502A | ||||
JP2005174537A |
Attorney, Agent or Firm:
IPD International Patent Business Corporation
Miaki Kametani
Tetsuo Kanamoto
Miaki Kametani
Tetsuo Kanamoto