Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1996-07-16
1999-01-12
Hindi, Nabil
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7808, 360 7805, 360 7707, 360 7809, G11B 5596
Patent
active
058597425
ABSTRACT:
A feedforward current from a feedforward current setting module, a target location trajectory from a position control module, and a correction value from a correction value setting module are produced for an elapsed time from each seek start time, namely at each sampling timing of a predetermined sample count. In the position control module, the position feedback control in response to an error between a target location and real position is performed in combination with the feedforward current. On a seek distance of one track, a coarse time is set to be 3 samples, for example. By intentionally slipping the target location trajectory from its ideal value, an overshoot and undershoot are restricted.
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Fujitsu Limited
Hindi Nabil
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