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Communication Dans Un Congrès Année : 2006

Modelling and Control in Optical Disk Drives: Reducing the Opto-mechanical coupling effect

Olivier Sename
Alina Voda

Résumé

In this paper it is proposed a new radial and vertical disturbance model for Optical Disc Drives (ODD). The model takes into account the opto-mechanical coupling between the radial and the vertical control loops. As a result, the coupling effect appears as an amplification of the vertical disturbances around the middle and the high frequencies in the vertical control loop (i.e. the focus servo). In addition, this paper proposes a H-infinity controller which compensates the coupling effect by choosing a suitable weighting function. The behavior of the controlled system is analyzed and discussed by using a simulation example in the frequency domain.

Domaines

Automatique
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Dates et versions

hal-00123042 , version 1 (08-01-2007)

Identifiants

  • HAL Id : hal-00123042 , version 1

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John Jairo Martinez Molina, Olivier Sename, Alina Voda. Modelling and Control in Optical Disk Drives: Reducing the Opto-mechanical coupling effect. Sep 2006, 6p. ⟨hal-00123042⟩
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