Title :
Optimal track following control for hard disk drives
Author :
Lin, Chen ; Guo, Guoxiao ; Chen, Ben M. ; Ko, Chi-Chung
Author_Institution :
Data Storage Inst., Singapore
Abstract :
This paper presents an optimal track following control design procedure for hard disk drives (HDD) to reach higher track densities given the disturbance and noise model in the HDD and the actuator bandwidth limitation. The linear-quadratic Gaussian/loop-transfer recovery (LQG/LTR) technique is used to design a family of controllers that minimize the position error variance due to disturbance and measurement noise during track following. An optimal controller is obtained by selecting the LQG/LTR controller that achieves the minimal position error signal (PES) tracking errors given the open-loop limitation.
Keywords :
actuators; control system synthesis; disc drives; hard discs; linear quadratic Gaussian control; minimisation; tracking; HDD; LQG control; LTR technique; actuator bandwidth limitation; disturbance; disturbance model; hard disk drives; linear-quadratic Gaussian technique; loop-transfer recovery technique; measurement noise; minimal PES tracking errors; noise model; open-loop limitation; optimal track following control design; position error variance minimization; track density; track following;
Conference_Titel :
Advanced Motion Control, 2000. Proceedings. 6th International Workshop on
Conference_Location :
Nagoya, Japan
Print_ISBN :
0-7803-5976-3
DOI :
10.1109/AMC.2000.862924
