Method and apparatus to prevent servo instability due to coupling between voice coil motor and feedforward sensor

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United States of America Patent

PATENT NO 9460744
SERIAL NO

14747413

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Abstract

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A voice coil motor control signal is detected being coupled into a vibration sensor of a hard disk drive. The vibration sensor is used to provide a feedforward signal to a servo control system of the hard disk drive. In response to detecting the coupling, the feedforward signal is modified to prevent instability of the servo control system.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gaub, Stephen Matthew Longmont, US 3 39
Supino, Lou Boulder, US 9 73

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