In the track following problem of HDD, there are many disturbances such as windage, pivot friction, bias torque from flex cable, RRO, and noise. Especially, the windage is one of the major sources, and its magnitude increases drastically as the disk rotation speed increases. In this paper, a method to attenuate the influence of input torque disturbances is proposed by the use of an accelerometer. The disturbances are estimated from the accelerometer attached at the carriage of VCM actuator, and are feedbacked into the control input in order to attenuate its effect to PES in the multi-rate control framework. Experiment shows that the proposed method effectively decreases the influence of the windage in the low frequency range without increasing the control bandwidth.
|Title of host publication||Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||2|
|ISBN (Electronic)||0780387171, 9780780387171|
|Publication status||Published - 2004|
|Event||2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 - Seoul, Korea, Republic of|
Duration: 2004 Aug 16 → 2004 Aug 19
|Name||Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004|
|Other||2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004|
|Country/Territory||Korea, Republic of|
|Period||04/8/16 → 04/8/19|
Bibliographical notePublisher Copyright:
© 2004 IEEE.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering