Title :
Improved TMR budget through a frequency shaped servo design
Author :
Chang, J-K. ; Weerasooriya, S. ; Ho, Hai T.
Author_Institution :
Data Storage Inst., Singapore
Abstract :
This paper introduces a method of establishing disturbances and measurement noise power spectra from the position error signal (PES) and presents a discrete-time linear-quadratic Gaussian/loop-transfer recovery (LQG/LTR) design technique for a disk drive track following servo system. Having the knowledge of these noise power spectra, a controller can be designed to minimize the energy corresponding to the actual read/write (R/W) head position
Keywords :
control system synthesis; discrete time systems; linear quadratic Gaussian control; magnetic disc storage; position control; servomechanisms; discrete-time linear-quadratic Gaussian/loop-transfer recovery control; disk drive track following servo system; disturbance power spectra; frequency-shaped servo design; measurement noise power spectra; position error signal; read/write head position; track misregistration; Disk drives; Frequency; Gaussian noise; Noise measurement; Noise shaping; Position measurement; Power measurement; Servomechanisms; Signal design; Tracking loops;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1997. IECON 97. 23rd International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-3932-0
DOI :
10.1109/IECON.1997.671019
