Method for reducing the rotation speed of an automatic ball balancing system of an optical disk reading device
US7028320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2003 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Sep 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for reducing the stable rotation speed of an automatic ball balancing system is used with an automatic ball balancing system that has a rotor that has an annular track, with at least one ball provided for rotation inside the track. First, an optimum rotation speed ws that is between the unstable critical rotation speed wc of a ball and a working rotation speed w is first determined. In the next step, the rotor is accelerated to the optimum rotation speed ws. Next, the acceleration of the rotor is reduced until the balls are stationary relative to the track, and then the rotor is accelerated to the working rotation speed w.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.