Data storage device employing spindle motor driving profile during seek to improve power performance
US9424868B1 · kind B1 · utility
5Cited by
336References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2015 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Jun 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising a spindle motor configured to rotate a disk, wherein the spindle motor comprises a plurality of windings, and a head actuated over the disk. The windings of the spindle motor are commutated based on a commutation sequence while applying a periodic driving voltage to each winding. During a seek operation to seek the head a seek length, an amplitude of the periodic driving voltage is adjusted according to a driving profile corresponding to the seek length, wherein the driving profile compensates for a power disturbance during the seek operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.