Title :
Head-disk spacing variation suppression via active flying height control
Author :
Liu, Xinqun ; Li, Amei ; Clegg, Warwick ; Jenkins, David F L ; Davey, Paul
Author_Institution :
Centre for Res. in Inf. Storage Technol., Univ. of Plymouth, UK
fDate :
10/1/2002 12:00:00 AM
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. The thermal signal detection method is used for real-time derivation of the 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.
Keywords :
control system analysis; disc drives; feedback; hard discs; magnetic heads; servomechanisms; shock control; signal detection; vibration control; HDD; active flying height control methods; feedback control; hard disk drives; head-disk spacing variation suppression; servo control systems; shock conditions; spacing variation signal real-time derivation; thermal signal detection methods; vibration conditions; Disk recording; Electric shock; Feedback control; Hard disks; Helium; Magnetic heads; Magnetic recording; Servosystems; Signal detection; Vibration control;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2002.807790
