Disc head arm position controller using digital velocity sensing

Details Disc head arm position controller using digital velocity sensing Disc head arm position controller using digital velocity sensing

1980-06-30

1982-06-01

Kilgore, Robert M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 2108

Patent

active

043331173

ABSTRACT:
Electronic circuitry for improving the speed and accuracy of shifting the magnetic heads of a disk memory from one to another track cylinder. Head velocity is measured with great accuracy by measuring the servo head transit time between adjacent tracks of the servo disk. A microprocessor controller in conjunction with preferred velocity profile data stored in a read only memory provides a control signal to the linear motor control causing the head arm velocity to follow the preferred velocity profile with excellent precision.

REFERENCES:
patent: 4031443 (1977-06-01), Droux
patent: 4068267 (1978-01-01), Inouye
patent: 4068269 (1978-01-01), Commander
patent: 4103314 (1978-07-01), Case
patent: 4237502 (1980-12-01), Erickson
patent: 4272793 (1981-06-01), Van Landingham

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