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Journal of Vibration and Control
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A Cost-Effective Scheme to Improve Radial Tracking Performance for Higher-Speed Optical Disk Drives

Yu Zhou

Philips Optical Storage, Singapore, Electrical Innovation Center, Bldg TP4, 5th Floor, 620A, Lorong 1 Toa Payoh, Singapore 319762

Maarten Steinbuch

Department of Mechanical Engineering, Control Systems Technology Group, Eindhoven University of Technology, WH 0. 141, PO Box 513, 5600 MB Eindhoven, the Netherlands

George Leenknegt

Optical Reconding Pre-Development, Building SFJ-1.38, PO Box 80002, 5600 JB Eindhoven, the Netherlands

The periodic disturbances caused by the inherent eccentricity and unbalancing in compact disk systems is one of the prominent radial-tracking problems of high-speed and high-density optical storage systems. To compensate these periodic disturbances, an adaptive feedforward compensation technique is presented and investigated with the aim of having cost-effective optical disk drive manufacturing. Computer simulations and experimental evaluation on a high-speed CD-ROM product show that the proposed adaptive feedforward compensator is very effective and provides a way to significantly improve the radial tracking performance by reducing the radial error by 85%.

Key Words: CD-ROM • periodic disturbance • radial tracking • adaptive feedforward compensation

Journal of Vibration and Control, Vol. 10, No. 6, 795-810 (2004)
DOI: 10.1177/1077546304036233
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