Method for reducing the rotation speed of an automatic ball...

Details Method for reducing the rotation speed of an automatic ball... Method for reducing the rotation speed of an automatic ball...

2006-04-11

2006-04-11

Davis, David (Department: 2652)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Optical storage medium support

Reexamination Certificate

active

07028320

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 wsthat is between the unstable critical rotation speed wcof 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.

REFERENCES:
patent: 6155134 (2000-12-01), Ikuta et al.
patent: 6333912 (2001-12-01), Sohn
patent: 6348747 (2002-02-01), Liao et al.

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