Title :
High-bandwidth control of the head-positioning mechanism in a Winchester disk drive
Author :
Hanselmann, Herbart ; Moritz, Wolfgang
Author_Institution :
University of Paderborn, Paderborn, Germany
fDate :
10/1/1987 12:00:00 AM
Abstract :
Modern disk drives use fast voice coil actuators for the positioning of magnetic heads onto desired tracks and for keeping them on track against various disturbances by closed-loop control. Problems stem from high-desired control bandwidth (∼ 1 kHz) requiring digital signal processing rates above 10 kHz and from complexity due to structural mechanics effects.
Keywords :
Disk recording; Magnetic recording/reading heads; Position measurement and control; Assembly; Coils; Disk drives; Hydraulic actuators; Magnetic field measurement; Magnetic heads; Pneumatic actuators; Target tracking; Vibrations; Winches;
Journal_Title :
Control Systems Magazine, IEEE
DOI :
10.1109/MCS.1987.1105360
