Selecting servo controller based on predicted position error signal spectrum
US9460742B1 · kind B1 · utility
2Cited by
7References
20Claims
0Family size
Assignee
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Key dates
| Filing date | May 13, 2015 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | May 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5582
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A discrete Fourier transform (DFT) of a position error signal (PES) of a read/write head controlled by a currently-used controller is determined. A plurality of predicted PES spectra are determined based on the DFT of the PES and a plurality of sensitivity functions associated with a plurality of controllers. One of the plurality of controllers is selected based on respective deviation metrics of the plurality of PES spectra. Servo control of the read/write head changes to use the selected controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.