Effects of the high gain servo controller and the initial value compensation on optical disk drives

Y. Urakawa; Y. Suzuki

doi:10.1117/12.738920

17 July 2007 Effects of the high gain servo controller and the initial value compensation on optical disk drives

Y. Urakawa, Y. Suzuki

Proceedings Volume 6620, Optical Data Storage 2007; 66200X (2007) https://doi.org/10.1117/12.738920
Event: Optical Data Storage 2007, 2007, Portland, OR, United States

Abstract

The high gain servo controller with complex zeros was proposed¹. The controller can realize a much higher gain with the same servo bandwidth. We applied the controller to Blu-ray disc drives, and confirmed decrease of servo error and improvement of resistance to vibration. On the other hand, we observed the controller increased an overshoot of an initial response. We applied the initial value compensation², and confirmed suppression of the overshoot.

Citation Download Citation

Y. Urakawa and Y. Suzuki "Effects of the high gain servo controller and the initial value compensation on optical disk drives", Proc. SPIE 6620, Optical Data Storage 2007, 66200X (17 July 2007); https://doi.org/10.1117/12.738920

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