Title :
Parametric uncertainty with perturbations restricted to be real on 12 CD mechanisms
Author :
Vidal, E. ; Stoustrup, J. ; Andersen, P. ; Pedersen, T.S. ; Mikkelsen, H.F.
Author_Institution :
Dept. of Control Eng., Aalborg Univ., Denmark
Abstract :
12 actual CD mechanisms that differ by having worst-case behaviors with respect to various properties are considered. An uncertainty model is based on a parametric description of plants where the perturbations are restricted to be real and μ-theory is applied to design a controller meeting the worst case focus deviations. Satisfactory results were achieved in the 12 CD mechanisms with the synthesized controller after a controller order reduction.
Keywords :
control system synthesis; disc drives; optical disc storage; perturbation techniques; position control; uncertain systems; μ-theory; 12 CD mechanism; controller design; controller order reduction; parametric uncertainty; perturbation; plants parametric description; synthesized controller; worst case focus deviation; Coils; Laser feedback; Laser theory; Lenses; Magnetic fields; Magnetic levitation; Optical control; Optical devices; Permanent magnets; Uncertainty;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1244050
