A03 共振モードの減衰を考慮した制振軌道設計とハードディスクのシーク制御への応用(OS5-1 精密・情報機器の制御)

概要

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For a first access control, it is effective to reduce the power spectrum density (PSD) of feedforward input in the frequency range where the mechanical resonance modes of the plant exist. We have shown that these feedforward input can be easily obtained using a final-state control method with a certain weighting function. However, if these resonance modes have damping and it cannot be neglected, the feedforward input can be optimized considering the effect of damping of the resonance modes. In this paper, we propose a design method of feedforward input which is optimized for resonance modes with damping. This method is applied to the track seek control of hard disk drives, and the effectiveness is shown by simulation.
2005-08-22