Head driving device with carriage assembly centroid position set

Details Head driving device with carriage assembly centroid position set Head driving device with carriage assembly centroid position set

1994-10-04

1995-08-15

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369220, 369244, 360106, G11B 2102

Patent

active

054426057

ABSTRACT:
In a head driving device having an optical head for erasing, recording and reproducing information, a carriage adapted to move in a radial direction of a disk as an information recording carrier together with the optical head, and voice coils attached to the carriage and imparting a thrust to the carriage in cooperation with a magnetic circuit, wherein tracking for a disk track deflection is performed by only a linear actuator comprising the magnetic circuit and the voice coils, a working center line of forces applied to the voice coils is set as so as to extend on the disk side with respect to the center of gravity of the moving portion. By so doing, a tracking servo system does not become unstable even when the working center line of forces exerted on the voice coils and the center of gravity of the moving portion are deviated from each other.

REFERENCES:
patent: 5016238 (1991-05-01), Shtipelman et al.
patent: 5033037 (1991-07-01), Yanagi
patent: 5130873 (1992-07-01), Yumura et al.

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