Method and apparatus for minimizing seek time in a disk drive by

Details Method and apparatus for minimizing seek time in a disk drive by Method and apparatus for minimizing seek time in a disk drive by

1996-01-16

1997-11-04

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7806, G11B 555

Patent

active

056846533

ABSTRACT:
A system for minimizing seek time in a disk drive having a power amplifier for controlling a servo actuator. The system includes at least one output terminal of the power amplifier connected to a processor for detecting and calculating a head room voltage for the power amplifier for seek operations, the head room voltage indicative of a margin of power available for controlling seek operations. A preferred method includes calculating a head room voltage for the power amplifier by detecting a saturation value of the amplifier during an acceleration phase in a first seek direction, and detecting an output voltage during a deceleration phase for a second seek operation in an opposite direction. The method further includes adjusting power to the power amplifier on a next seek operation based on the head room voltage calculated, such that at least some of the margin of power available identified by the head room voltage is used on the next seek operation for reducing seek time.

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patent: 5305161 (1994-04-01), Giovanetti et al.
patent: 5329409 (1994-07-01), Hampshire
patent: 5465183 (1995-11-01), Hattori

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