Disc head arm position controller using digital velocity...

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

G - Physics

11

B

352/21.33

G11B 21/08 (2006.01) G11B 5/596 (2006.01)

Patent

CA 1161161

ABSTRACT OF THE DISCLOSURE 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 pro- vides a control signal to the linear motor control causing the head arm velocity to follow the preferred velocity profile with excellent precision.

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