Disk drive employing data-based basis function expansion for tuning seek servo loop
US7839600B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2009 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | May 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59627
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of tuning a seek operation of a disk drive is disclosed, the disk drive comprising a disk, an actuator arm, a head coupled to a distal end of the actuator arm, a voice coil motor (VCM) for rotating the actuator arm about a pivot, and a closed loop servo system for generating a VCM control signal applied to the VCM. A function h is applied to the closed loop servo system and a corresponding output g of the closed loop servo system is measured. A reference signal is generated in response to a summation of a plurality of the function h, wherein each of the plurality of the function h is shifted by an offset and scaled by a coefficient, and the coefficients are generated in response to the measured output g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.