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Magnetic Head Stiction Detection

IP.com Disclosure Number: IPCOM000041623D
Original Publication Date: 1984-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Heinrich, V: AUTHOR [+5]

Abstract

The tangential movement of a magnetic head relative to a rotating disk can be measured by reading a reference signal stored on the disk and analyzing the modulation of this signal and/or its frequency characteristics. The proposed method provides for a reference signal of usually 500 Hz to be recorded on the disk by the head when the disk is started. At the normal rotating speed, this reference signal is read and analyzed, thus detecting any irregularities. Especially by counting the pulses written when the disk is started, any stiction can be reliably detected, as some pulses will be missing.

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Magnetic Head Stiction Detection

The tangential movement of a magnetic head relative to a rotating disk can be measured by reading a reference signal stored on the disk and analyzing the modulation of this signal and/or its frequency characteristics. The proposed method provides for a reference signal of usually 500 Hz to be recorded on the disk by the head when the disk is started. At the normal rotating speed, this reference signal is read and analyzed, thus detecting any irregularities. Especially by counting the pulses written when the disk is started, any stiction can be reliably detected, as some pulses will be missing.

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