Head position control method, head position control device...

Details Head position control method, head position control device... Head position control method, head position control device...

2008-05-13

2008-05-13

Nguyen, Hoa T. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

11603647

ABSTRACT:
In a head position control device having a disturbance suppression function and eccentricity correction function, the interference between the eccentricity correction function and the disturbance suppression function is prevented. An eccentricity correction function and disturbance suppression control function are provided in the head positioning control system, and an interference prevention function, which detects the disturbance suppression frequency and turns OFF the feedback of the eccentricity correction control for the eccentricity correction frequency near the disturbance suppression frequency, or shifts the disturbance suppression frequency from the eccentricity correction frequency, is provided. Therefore the interference between the eccentricity correction and the disturbance suppression can be prevented, and unstable eccentricity correction can be prevented.

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