Low acoustic noise head actuator
US4956831A · kind A · utility
41Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1988 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Sep 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/083
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive system has a closed loop servo control system which is specially tuned for optimal deceleration during performance of a track access operation. The servo control system is returned in response to a track jump signal to perform a track jump operation at a lesser deceleration and thereby reduce low frequency acoustic noise produced by physical vibrations of the disk drive system. The returning of the servo control system is advantageously achieved by reducing the gain-bandwidth product of the closed loop within the servo control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.