Title :
Dual-stage track-following servo design for hard disk drives
Author :
Hernandez, Daniel ; Park, Sung-Su ; Horowitz, Roberto ; Packard, Andrew K.
Author_Institution :
Dept. of Mech. Eng., California Univ., Berkeley, CA, USA
Abstract :
Discrete time, 25 KTPI track-following servos were designed for magnetic hard disk drive dual stage actuators using the μ-synthesis methodology. The design methodology was tested on two microactuator models. The first is a model of a piezoelectrically actuated suspension, under development by Hutchinson Technology Incorporated. The second is a model of an electrostatically actuated MEMS microactuator, under development by the IBM Almaden Research Center. Low order controllers were successfully designed for both models, which achieved the prescribed robustness and performance requirements
Keywords :
control system synthesis; disc drives; hard discs; microactuators; micropositioning; robust control; servomechanisms; μ-synthesis methodology; Hutchinson Technology Incorporated; IBM Almaden Research Center; dual-stage track-following servo design; electrostatically actuated MEMS; hard disk drives; low order controllers; microactuator models; performance requirements; piezoelectrically actuated suspension; robustness; Coils; Electrostatic actuators; Fabrication; Hard disks; Magnetic levitation; Microactuators; Micromechanical devices; Micromotors; Servomechanisms; Voltage;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786319
