Magnetic disk apparatus having an accelerometer for detecting acceleration in the positioning direction of the magnetic head
US6335845B1 · kind B1 · utility
13Cited by
4References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 22, 1998 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Jul 22, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/553
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sector servo type magnetic disk apparatus is provided with, in addition to servo signals, a sensor such as an accelerometer for detecting a state of a magnetic head or a support for the magnetic head at a period shorter than a sampling period of the servo signals. Since an accelerometer mounted on the magnetic head or the support for the magnetic head detects an acceleration, the control performance of a servo control system can be improved, such as reduction of generation of mechanism resonance vibrations of a carriage and improvement on detection precision of a speed signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.