Title :
Dual stage actuator modeling and control in a CD-ROM drive
Author :
Hu, X.P. ; Weerasooriya, S. ; Low, T.S. ; Chen, B.M.
Author_Institution :
Data Storage Inst., Singapore
fDate :
31 Aug-4 Sep 1998
Abstract :
In a CD-ROM drive, track seeking and following are facilitated by a dual stage actuator consisting of a sledge and a radial actuator. This paper presents an H∞ controller based on the performance requirement and the modeling uncertainties of the two actuators. Stability and performance robustness are achieved. Tracking error is reduced to 0.01 μm (1.6 μm track width in present CD-ROM)
Keywords :
CD-ROMs; H∞ control; control system synthesis; disc drives; electric actuators; stability; CD-ROM drive; H∞ controller; dual stage actuator control; dual stage actuator modeling; modeling uncertainties; performance requirement; performance robustness; radial actuator; sledge; stability; track following; track seeking; tracking error; Actuators; CD-ROMs; Equations; Frequency domain analysis; Frequency estimation; Frequency measurement; Frequency response; Least squares approximation; Robust stability; Transfer functions;
Conference_Titel :
Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE
Conference_Location :
Aachen
Print_ISBN :
0-7803-4503-7
DOI :
10.1109/IECON.1998.722855
