Disk head driving device using linear activator with multipolar

Details Disk head driving device using linear activator with multipolar Disk head driving device using linear activator with multipolar

1994-12-06

1996-12-24

Young, W. R.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7703, 360 7811, 310 12, G11B 5596

Patent

active

055878520

ABSTRACT:
The head driving apparatus of the present invention is composed of the following units. A head-provided carriage which moves in a straight line; a plurality of coils fixed on the carriage; a multipolar magnet whose polarities are alternated along the passage for the coils; a ferromagnetic stator yoke for fixing the magnet; a position sensor for detecting a position of the carriage, and a driving circuit for generating a function signal for each coil which corresponds to a detected carriage position, based on the distribution of the magnetic flux to be formed by the multipolar magnet, and then supplies the current to the coils based on the function signal.

REFERENCES:
patent: 5075583 (1991-12-01), Sakagami et al.
patent: 5130583 (1992-07-01), Andoh
patent: 5175455 (1992-12-01), Penicaut
patent: 5191270 (1993-03-01), McCormack
patent: 5231549 (1993-07-01), Morehouse et al.
patent: 5245232 (1993-09-01), Nihel et al.
patent: 5262907 (1993-11-01), Duffy et al.
patent: 5270886 (1993-12-01), Nigam
patent: 5289088 (1994-02-01), Andoh
patent: 5359245 (1994-10-01), Takel

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