Disk drive compensating for rotational vibrations, physical shocks, and thermal popping
AssigneeWestern Digital Technologies, Inc.
InventorsTimothy A. Ferris, Alain Chahwan
Life of this patent
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Abstract
A disk drive is disclosed comprising a disk, and a head actuated radially over the disk. A first linear acceleration signal is generated representing a first acceleration disturbance, a second linear acceleration signal is generated representing a second acceleration disturbance, and a third linear acceleration signal is generated representing a thermal popping disturbance. The first linear acceleration signal is combined with the third linear acceleration signal to generate a fourth linear acceleration signal representing a combined physical shock disturbance and thermal popping disturbance.
Claims17
A disk drive comprising:
- a disk;
- a head actuated radially over the disk;
- and
- control circuitry operable to:
- generate a first linear acceleration signal representing a first acceleration disturbance;
- generate a second linear acceleration signal representing a second acceleration disturbance;
- generate a third linear acceleration signal representing a thermal popping disturbance;
- and
- combine the first linear acceleration signal with the third linear acceleration signal to generate a fourth linear acceleration signal representing a combined physical shock disturbance and thermal popping disturbance.
A method of operating a disk drive, the disk drive comprising a disk, and a head actuated radially over the disk, the method comprising:
- generating a first linear acceleration signal representing a first acceleration disturbance;
- generating a second linear acceleration signal representing a second acceleration disturbance;
- generating a third linear acceleration signal representing a thermal popping disturbance;
- and
- combining the first linear acceleration signal with the third linear acceleration signal to generate a fourth linear acceleration signal representing a combined physical shock disturbance and thermal popping disturbance.
A disk drive comprising:
- a disk;
- a head actuated radially over the disk;
- and
- a means for generating a first linear acceleration signal representing a first acceleration disturbance;
- a means for generating a second linear acceleration signal representing a second acceleration disturbance;
- a means for generating a third linear acceleration signal representing a thermal popping disturbance;
- and
- a means for combining the first linear acceleration signal with the third linear acceleration signal to generate a fourth linear acceleration signal representing a combined physical shock disturbance and thermal popping disturbance.
Dependencies are inferred from the claim text.