Disk drive apparatus, head position control method, and hard...

Details Disk drive apparatus, head position control method, and hard... Disk drive apparatus, head position control method, and hard...

2005-05-10

2005-05-10

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078040, C360S061000

Reexamination Certificate

active

06891692

ABSTRACT:
A position control system for a magnetic head improves servo tracking characteristics in a low frequency range without impairing the stability of seek operations. The position control system is equipped with two integrators: a first integrator43and second integrator45.The gain K3′ of the second integrator45is set larger than the gain K3of the first integrator43.The first integrator43plays the role of offsetting the bias force acting on the magnetic head while the second integrator45plays the role of improving the servo tracking characteristics in the low frequency range.

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