Sinusoidal feed-forward seek with adaptive acoustic level constraint
US6762571B2 · kind B2 · utility
8Cited by
18References
11Claims
0Family size
Assignee
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Key dates
| Filing date | May 10, 2002 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | May 10, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5521
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for controlling acoustic noise generated by a seek operation in a disc drive by using a feedback control system to control the seek operation. The feedback control system is excited by a feed-forward signal during execution of the seek operation. An acoustic factor, which defines a seek operation noise level, is selected. The feed-forward signal is generated based, at least in part, upon the selected acoustic factor. The feed-forward signal has a first derivative having a maximum value. The selected acoustic factor is used to select the maximum value of the first derivative of the feed-forward signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.