Magnetic recording disk file servo control system including an actuator model for generating a simulated head position error signal
US4575776A · kind A · utility
39Cited by
3References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 20, 1982 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Dec 20, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59655
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A servo system for a magnetic disk file having a voice coil motor (VCM) actuator generates a position error signal (PES) from servo information recorded on one of the disks. An electrical model of the VCM is employed through which a measure of the VCM electrical current is passed to generate a simulated PES signal which is continuous even if the regular PES is sampled or intermittent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.