Rotary recording apparatus and method of controlling the apparatus
US6831809B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Jan 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59622
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A control arrangement having a feedforward system and a feedback system, a control model for generating reference position data from a feedforward control signal is separated into an original control model and a compensation filter. Gain of the feedforward control signal is compensated by a gain compensation circuit to form a feedforward control signal after compensation. The reference position data is input to a feedback controller, and a feedback control signal and feedforward control signal are input to a control object. Coefficients of the compensation filter and the gain compensation circuit are compensated on the basis of a head position trajectory obtained by actual seek operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.