Title :
Track-following controller design of MEMS based dual-stage servos in magnetic hard disk drives
Author :
Li, Yunfeng ; Horowitz, Roberto
Author_Institution :
Comput. Mech. Lab., California Univ., Berkeley, CA, USA
Abstract :
A decoupled controller architecture and discrete time pole placement design methodology is proposed for dual-stage servo controller design of magnetic hard disk drives. The methodology was applied to the controller design of a dual-stage servo with a MEMS microactuator (MA) which rotates the slider relative to the gimbal. MIMO and SIMO controllers were designed for cases when the microactuator´s relative position error signal is respectively available and not available to the control system. The effects of MA resonance variations on the stability and performance of the controller were analyzed for both cases
Keywords :
MIMO systems; control system synthesis; disc drives; discrete time systems; electrostatic actuators; hard discs; pole assignment; position control; servomechanisms; MEMS based dual-stage servos; MIMO controllers; SIMO controllers; decoupled controller architecture; discrete time pole placement; magnetic hard disk drives; relative position error signal; track-following controller; Control systems; Design methodology; Error correction; Hard disks; MIMO; Microactuators; Micromechanical devices; Servomechanisms; Signal design; State feedback;
Conference_Titel :
Robotics and Automation, 2000. Proceedings. ICRA '00. IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5886-4
DOI :
10.1109/ROBOT.2000.844171
