Disk drive increasing integrator output range to complete seek operation
US8767343B1 · kind B1 · utility
79Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2012 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Sep 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a disk comprising a plurality of data tracks, a head, and control circuitry comprising a servo control system operable to actuate the head over the disk. When an access command is received to access a target data track, a seek operation is initiated to seek the head toward the target data track, wherein the seek operation includes integrating a first state of the servo control system and limiting an output range of the integrating. The output range of the integrating is increased during the seek operation, for example, if an error occurs during the seek operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.