Estimator positioning system and method
US5182684A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1990 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Nov 6, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5547
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method for controlling the movement of a member, particularly the heads of a disk file, to a specified position in a predetermined path, makes use of an electromagnetic responsive to control signals and to position reference information and a transducing means for reading such information to produce a position signal. The position signal is sampled regularly and, together with the actuator control signal, used to update a velocity estimator. During the deceleration phase of the movement, a new actuator control signal is generated at each sample time from the square of the estimated velocity divided by the computed distance-to-go to the specified position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.