Adaptive velocity profile for disk actuator control
US4899234A · kind A · utility
35Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Apr 4, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/083
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microprocessor is used to measure the performance of a disk drive during each seek operation. By measuring track crossings per unit time of acceleration the deceleration of the servo arm can be delayed as long as possible to minimize unproductive access time. A performance ratio is calculated for each seek and the look-up table values of worst case performance are modified to fit measured actual performance values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.