Disk drive detecting defective microactuator
US8547657B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2010 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Feb 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/048
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a disk surface comprising a plurality of tracks, each track comprising a plurality of servo sectors. The disk drive further comprises a head coupled to a distal end of an actuator arm, and a voice coil motor (VCM) and a microactuator operable to actuate the head over the disk surface. The head is first servoed in response to the servo sectors, and after first servoing the head, a manufacturing procedure is executed by controlling the VCM and the microactuator to servo the head while accessing the disk surface. After executing the manufacturing procedure, the head is second servoed in response to the servo sectors, and the microactuator is evaluated in response to the first and second servoing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.