Disc drive fine servo velocity control and method for head...

Details Disc drive fine servo velocity control and method for head... Disc drive fine servo velocity control and method for head...

G - Physics

11

B

352/21.32, 352/2

G11B 21/08 (2006.01) G11B 21/10 (2006.01)

Patent

CA 1319980

DISC DRIVE FINE SERVO VELOCITY CONTROL AND METHOD FOR HEAD POSITIONING RELATIVE TO A DISC Inventors: Robert F. Couse Patrick G. Mercer Abstract A disc drive 24 having a head 26 actuated by an actuator 32 for seeking out a destination track 30 includes servo velocity control circuitry 51 and servo position control circuitry 41. The servo velocity control circuitry 51 seeks out the destination track and places the head within the boundaries of that track while the servo position control circuitry 41 using servo information places the head on the centerline of the destination track. The fine servo control circuitry 20 is provided for communicating the information generated by the servo position control circuitry 41 to the servo velocity circuitry 51 when the head 26 is several tracks from the destination track in order to allow the actuator 32 to smoothly and quickly cause the head to seek within the boundaries of the destination track without overshooting that track. S2:12 SYQU6399/SRM

590284

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