Storage apparatus, spindle motor control method, and program

Details Storage apparatus, spindle motor control method, and program Storage apparatus, spindle motor control method, and program

2006-05-16

2008-10-28

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

C360S069000, C369S047380

Reexamination Certificate

active

07443628

ABSTRACT:
A default gain table stores values of loop gain of a spindle motor control unit predetermined for each number of media. A loop gain setting unit detects the number of media, reads out a loop gain corresponding to the detected number of media from the default gain table and sets it in the spindle motor control unit. A loop gain measuring unit measures the loop gain of the spindle motor control unit during a test in the manufacturing process, adjusts it into an optimum loop gain, and stores it as a default lop gain in the apparatus.

REFERENCES:
patent: 5508987 (1996-04-01), Matsunaga et al.
patent: 2007/0076549 (2007-04-01), Morishige
patent: 9-198820 (1997-07-01), None
patent: 2005-135546 (2005-05-01), None

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