Head disk spacing variation suppression via active flying height control

Xinqun Liu Xinqun Liu,W Clegg,Amei Li Amei Li,D Jenkins,P Davey

doi:10.1109/imtc.2001.928205

Head disk spacing variation suppression via active flying height control

Xinqun Liu Xinqun Liu, W Clegg + Show 3 more

https://doi.org/10.1109/imtc.2001.928205

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Publication Date: May 21, 2001

Citations: 12

Affiliation: University of Plymouth

#Spacing Variation #Vibration Conditions + Show 8 more

Abstract
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Abstract

A novel active flying height control method is proposed for the suppression of head-disk spacing variation in hard disk drives under shock or vibration conditions. A thermal signal detection method is used for real-time derivation of spacing variation signal for feedback control. Design details of the servo control system are given. Simulation results are provided to demonstrate the effectiveness of the method.

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