Title :
Digital control of repetitive errors in disk drive systems
Author :
Chew, Kok Kia ; Tomizuka, Masayoshi
Author_Institution :
Dept. of Mech. Eng., California Univ., Berkeley, CA, USA
Abstract :
Tracking errors in disk drive systems have a significant repetitive component that is not explicitly taken into account in conventional servo controllers. A modified prototype repetitive controller is applied as a plug-in module to a Winchester disk drive with a preexisting analog feedback controller to demonstrate its efficacy in the reduction of this periodic component. A review of the Winchester disk drive system is included.<>
Keywords :
digital control; electric drives; hard discs; position control; Winchester disk drive; digital control; disk drive systems; repetitive errors; tracking errors; Control systems; Digital control; Disk drives; Error correction; Industrial control; Magnetic heads; Open loop systems; Prototypes; Servomechanisms; Tracking;
Journal_Title :
Control Systems Magazine, IEEE
