Title :
Minimum energy positioning control in optical disk drives
Author :
Kudo, Kazuki ; Yamada, Ichiro ; Katoh, Kikuji
Author_Institution :
NTT Appl. Electron. Lab., Tokyo, Japan
Abstract :
To achieve high-speed positioning in optical disk drives, optimal control and mechanical design are important. From this point of view, the construction of a practical minimum-energy positioning control system based on an optimal regulator is proposed. Calculations show that the proposed control can realize optical head positioning with almost constant positioning accuracy and power consumption per unit time for various positioning times. Experimental and calculated positioning trajectories of the optical head positioner agree well. Repetitive velocity errors are with 5 mm/s, and repetitive positioning errors are within ten tracks, indicating the effectiveness of the proposed control
Keywords :
optical disc storage; optimal control; position control; high-speed positioning; minimum-energy positioning control system; optical disk drives; optical head positioner; optimal control; optimal regulator; repetitive positioning errors; repetitive velocity errors; Control systems; Disk drives; Energy consumption; Error correction; High speed optical techniques; Optical control; Optical design; Optimal control; Regulators; Velocity control;
Conference_Titel :
Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-87942-600-4
DOI :
10.1109/IECON.1990.149108
