Disk drive correcting position error signal based on velocity of head
US8077428B1 · kind B1 · utility
116Cited by
37References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2010 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Jun 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59627
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of servo sectors that define a plurality of servo tracks. A position error signal (PES) is generated in response to the servo sectors, and a head velocity is estimated relative to the servo tracks. A correction value is generated as a function of the head velocity and the PES, and the PES is adjusted using the correction value to generate an adjusted PES. The head is positioned over the disk in response to the adjusted PES.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.