Hard disk drive vibration cancellation using adaptive filter
US7486470B1 · kind B1 · utility
14Cited by
16References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5565
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of reducing the effect of vibrations associated with seek operations is disclosed. A feedforward filter is adjusted. A cancellation signal is then generated utilizing an adjusted feedforward filter, wherein the cancellation signal models a resonance of a vibration mode. The cancellation signal is provided at an actuator control signal, thereby inducing a force applied to an actuator such that the force holds the actuator at a track center position while vibrations occur during hard disk drive operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.