Head positioning controller, disk device cooperating same, and head positioning control method

A positioning control and controller technology, which is applied in the configuration/installation of recording heads, driving/moving recording heads, instruments, etc., and can solve problems such as non-tracking, deterioration of positioning accuracy, and resulting position errors.
CN1499511AInactive Publication Date: 2004-05-26PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2004-05-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

A head positioning system includes: a positioning mechanism section 1 for positioning a head 12; a position controller 2 for detecting a head position signal x to output a position control signal Ux; a velocity detector 3 for detecting the relative velocity of the head 12 with respect to a disk 7 based on the head position signal x; a counter electromotive voltage detector 4 for outputting an estimated head velocity signal Ve2 that is obtained by estimating the absolute velocity of the head 12 based on a counter electromotive voltage signal Vs of an actuator 50; an estimated velocity corrector 5 for correcting an estimation error of the estimated head velocity signal Ve2 based on a velocity signal detected from the head position signal x so as to output a corrected estimated velocity signal Ve2'; and an estimation controller 6 for outputting a velocity control signal Uv based on the corrected estimated velocity signal Ve2', wherein the actuator 50 is controlled by a control amount signal U that is obtained by adding at least the velocity control signal Uv to the position control signal Ux.
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Description

technical field

[0001] The present invention relates to a disk device using a disk-shaped information recording medium, such as a magnetic disk device or an optical disk device, a head positioning control device and a head positioning control method thereof. Background technique

[0002] In recent years, along with the development of multimedia, there has been a strong demand in the market for high-recording-density disk devices capable of recording or reproducing large-capacity video information, audio information, character information, and the like at high speed. Among magnetic disk devices, magnetic disk devices in particular are characterized by so-called cheapness, small size, large capacity, and high-speed data transfer. The magnetic disk device is being used not only for personal computers (hereinafter abbreviated as PC), but also in the field of AV (Audio-Visual) and the field of automotive electronics. In addition, the use in so-called mobile fields such as mobile...

Claims

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