2次元周波数空間におけるモード分解とモード群分解 : モード群のリアルタイムフィルタリング(機械力学,計測,自動制御)

概要

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This paper examines a method for the design of a real-time filter for extrcating a desired modal cluster, which is decomposed on a two-dimensional frequency domain. At first, the realization method of modal cluster decomposition was revisited. Then, in order to extract the desired modal cluster on real-time, we derived a design method of a time domain filter based on a theory for two-dimensional FIR filter. This filter computes the simple summation of current signals for a spatial direction, and hence there is no time delay to extract the signal of a desired modal cluster. As a numerical example, it was shown that the real-time filtering of the desired modal cluster can be successfully realized with low computational cost and without time delay.
社団法人日本機械学会の論文
2007-10-25