Title :
Multirate control of an HDD servo system with intersample ripple free
Author :
Jia, Qing-Wei ; Ooi, Kian-Keong ; Wu, Dao-Wei
Author_Institution :
Servo Dept., Seagate Technol. Int., Singapore, Singapore
fDate :
9/1/2002 12:00:00 AM
Abstract :
Discusses the intersample ripple problem in multirate control design of a hard disk drive (HDD) servo system. An intersample ripple-free multirate control scheme is presented. Based on the conventional multirate approach, a constraint on the controller parameters is introduced in the new scheme. The constraint is to force the multirate control inputs to converge to the same constant level so as to eliminate the intersample ripple in the system output.
Keywords :
closed loop systems; disc drives; hard discs; microactuators; servomechanisms; HDD servo system; constraint; controller parameters; hard disk drive; intersample ripple free; multirate control design; same constant level; system output; Control design; Control systems; Disk drives; Force control; Hard disks; Poles and zeros; Process control; Servomechanisms; Signal processing; Signal sampling;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.801863
