US Patent 7440225 Disk drive employing pivot friction compensation

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Edits on 17 Sep, 2023

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edited on 17 Sep, 2023

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Patent Inventor Names

Min Chen0

Zhi Wang0

Edits on 15 Sep, 2023

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Golden AI

edited on 15 Sep, 2023

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Patent abstract

A disk drive is disclosed including a disk having a plurality of servo tracks, wherein each servo track comprises a plurality of servo sectors forming N servo wedges, and a wedge time period (WTP) occurs between each servo wedge. A VCM control signal is generated by generating an estimated WTP by detecting the servo sectors, estimating a pivot velocity in response to the estimated WTP, the pivot velocity representing a velocity of an actuator arm about a pivot, generating a pivot friction compensation in response to the estimated pivot velocity, and generating the VCM control signal in response to the pivot friction compensation.

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edited on 22 Jul, 2023

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https://pdfpiw.uspto.gov/.piw?Docid=07440225

Edits on 21 May, 2023

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