Fine positioning apparatus for floppy disk drive

Details Fine positioning apparatus for floppy disk drive Fine positioning apparatus for floppy disk drive

1984-06-20

1986-12-16

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 78, 360106, G11B 556

Patent

active

046301453

ABSTRACT:
A positioning system for a magnetic disk storage system. A first and second lead screw connected to their respective stepper motors are mechanically connected by a lever arm that adds these motions. The first stepper motor is controlled by an open loop control circuit and the second stepper motor is controlled by a closed loop circuit that reads servo information off the magnetic disk. The head is constantly repositioned to follow track eccentricities and can accurately read very closely spaced tracks on non-rigid disks.

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