Title :
Track-following and seek/settle control schemes for high density disk drives with dual-stage actuators
Author :
Guo, Lin ; Chang, JyeKai ; Hu, Xiaoping
Author_Institution :
Adv. Technol. Group, Maxtor Corp., Milpitas, CA, USA
Abstract :
Advanced track following and seek/settle schemes for high density hard disk drives with dual-stage actuators are presented. A decoupled master-slave loop structure has been designed for a dual loop system with suspension based piezoelectric microactuators. Experiments show significant performance improvements of the dual-actuator system over the conventional single loop servo system. A new settle scheme for dual-stage servo system is also designed using a dual-loop initial value compensation (DIVC) scheme. Experimental results shown dramatic improvement of settle time using this new scheme
Keywords :
actuators; compensation; disc drives; hard discs; initial value problems; microactuators; piezoelectric actuators; DIVC scheme; decoupled master-slave loop structure; dual loop system; dual-loop initial value compensation scheme; dual-stage actuators; dual-stage servo system; high-density hard disk drives; seek/settle control schemes; single loop servo system; suspension based piezoelectric microactuators; track following; Actuators; Design methodology; Disk drives; Hard disks; Manufacturing; Master-slave; Microactuators; Modems; Servomechanisms; Transfer functions;
Conference_Titel :
Advanced Intelligent Mechatronics, 2001. Proceedings. 2001 IEEE/ASME International Conference on
Conference_Location :
Como
Print_ISBN :
0-7803-6736-7
DOI :
10.1109/AIM.2001.936862
