Time optimal seeks using linear velocity scheduling
US6594105B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1999 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Dec 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for optimizing seeks for a head on an actuator arm of a disc drive is disclosed. The method involves obtaining a distance to the target track and an optimum time to seek over the obtained distance for each velocity sampling point. The target velocity is then computed from the obtained distance and the optimum time and the actual velocity is subtracted to yield an error. The error is then utilized to provide a current to correct the acceleration of the servomechanism attached to the actuator arm. The apparatus includes a memory for storing acceleration and motor time constants; a microprocessor for calculating the obtained distance, the optimum time, the target velocity, the error, and the current value; a servomechanism that swings the actuator arm; a transducer that produces a position signal; and a power amplifier for receiving the current value and driving the servomechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.