Method and system for rotational velocity-based algorithm...

Details Method and system for rotational velocity-based algorithm... Method and system for rotational velocity-based algorithm...

2005-05-24

2005-05-24

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077030, C360S078110

Reexamination Certificate

active

06898046

ABSTRACT:
A disk drive (HDD) (and method) subject to linear and rotational vibration, includes an independent sensing unit for sensing a rotational velocity component of the rotational vibration in a predetermined frequency range, and an optimal filter combination for receiving an output from the sensing unit.

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Charlie Hernden, “Vibration Cancellation Using Rotational Accelerometer Feedforward in HDDS”, Data Storage, Nov. 2000, 4 Pages Total.
Jinzenji et al., :Acceleration Feedforward Control Against Rotational Disturbance in Hard Disk Drives ,APMRC, Nov. 6-8, 2000, TA6-01-TA6-02, 2 Pages Total.
Jinzenji et al., “Acceleration Feedforward Control Against Rotational Disturbance in Hard Disk Drives”, IEEE 2001, Nov. 22, 2000, 6 Pages Total.

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