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Abstract

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%.

Keywords

CD-ROM periodic disturbance radial tracking adaptive feedforward compensation

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A Cost-Effective Scheme to Improve Radial Tracking Performance for Higher-Speed Optical Disk Drives

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