Feed forward control of voice coil motor induced microactuator disturbance
US6778350B2 · kind B2 · utility
2Cited by
52References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2001 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Jul 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is used for moving a transducing head between tracks of a disc in a dual-stage actuation assembly. The dual-stage actuation assembly has a main actuator for coarse positioning of the transducing head and a microactuator for fine positioning of the transducing head. The method comprises accelerating the main actuator during coarse positioning of the transducing head and applying control pulses to the microactuator during coarse positioning by the main actuator to eliminate oscillation of the microactuator during and after coarse positioning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.