Title :
Linear quadratic controller with fault detection in compact disk players
Author :
Vidal, E. ; Hansen, K.G. ; Andersen, R.S. ; Poulsen, K.B. ; Stoustrup, J. ; Andersen, P. ; Pedersen, T.S.
Author_Institution :
Dept. of Control, Aalborg Univ., Denmark
Abstract :
The design of the positioning controllers in optical disk drives are today subjected to a trade off between an acceptable suppression of external disturbances and an acceptable immunity against surfaces defects. In this paper an algorithm is suggested to detect defects of the disk surface combined with an observer and a linear quadratic regulator. As a result, the mentioned trade off is minimized and the playability of the tested compact disk player is considerably enhanced
Keywords :
Hi-Fi equipment; control system synthesis; fault location; linear quadratic control; CD players; LQ controller; compact disk players; external disturbance suppression; fault detection; linear quadratic controller; linear quadratic regulator; optical disk drives; playability; positioning controller design; surface defect immunity; trade-off minimization; Bandwidth; CD recording; Coils; Disk drives; Fault detection; Lenses; Optical control; Optical feedback; Regulators; Tracking loops;
Conference_Titel :
Control Applications, 2001. (CCA '01). Proceedings of the 2001 IEEE International Conference on
Conference_Location :
Mexico City
Print_ISBN :
0-7803-6733-2
DOI :
10.1109/CCA.2001.973841
