107 評価点の位置情報を利用した3次元能動音響制御(騒音の制御,騒音・振動評価・改善技術)

概要

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Active noise control (ANC) around head is investigated in this paper. In this type control, an enough control effect cannot be got when an evaluating point is moving. Against this problem, authors proposed Geometrical Adjustment Method based on Direct Adaptive Algorithm. Geometrical Adjustment Method prevents the control effect to become worse just after movement starts. However, the control effect becomes worse if the evaluating point moves largely. ANC used Filter-Map is proposed against this problem. In this paper, a method to update the Filter-Map is investigated. Predetermined map reliability controls the update. Difference of the control effect caused by difference of map reliability is researched in numerical simulations and experiments. The result suggests that the map reliability should be changed by the control effect.
社団法人日本機械学会の論文
2008-07-09