Design Method Considering Phase Condition for Adaptive Feedforward Cancellation

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  • Okuyama Atsushi
    Department of Precision Engineering, Tokai University
  • Yabui Shota
    Japan Research Laboratory, Hitachi Global Storage Technologies Japan, Ltd.
  • Atsumi Takenori
    Japan Research Laboratory, Hitachi Global Storage Technologies Japan, Ltd.

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  • 適応フィードフォワード制御器の位相条件を考慮した設計法
  • テキオウ フィードフォワード セイギョキ ノ イソウ ジョウケン オ コウリョ シタ セッケイホウ
  • A Study on Adaptive Feedforward Cancellation Schemes Considering Phase Condition

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Abstract

This paper presents the design method of adaptive feedforward cancellation (AFC) for reducing periodic disturbance. AFC can be designed by considering the phase condition. The results of this study show that the proposed method can achieve a circular vector locus that recedes from the critical point on the Nyquist diagram and can improve the convergence of the adaptive algorithm. The effectiveness of the proposed method is confirmed by numerical simulations of the benchmark problem for hard disk drives (HDDs).

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