System and apparatus for reducing off-track gain for a disk drive actuator
US7239486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Jul 29, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The dynamics of a disk drive actuator are enhanced by redistributing the mass and stiffness of the structure. The two nodal points of the second primary bending mode of the actuator are relocated to positions that are both radially outboard of their original positions. One nodal point is positioned as close to the read-write head as possible at one end of the actuator, and the other nodal point is positioned at the center of the active legs of the VCM coil at the other end of the actuator. This is done to reduce the off-track displacement associated with this fundamental resonance to near zero, allowing higher track densities to be supported.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.