Method and system for pre-contact detection and active damping of air bearing vibrations in a hard disk drive
US7660068B1 · kind B1 · utility
17Cited by
12References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Sep 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6076
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method of pre-contact detection and active damping of air bearing vibrations in a hard disk drive, a slider is isolated from ground. The slider is then capacitively coupled with a hard disk of the hard disk drive via a thermal fly-height control (TFC) heating element. An alternating current (AC) signal is applied to the slider via the TFC heating element to control the amplitude of the slider.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.