An improved narrowband Fx-Newton algorithm and its application in active vibration control

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (18) : 170-176.

Chunyu Wang1 2 Lin He1,2 Yan Li1,2 Changgeng Shuai1,2 Zechao Hu1,2

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Abstract

The narrowband Fx-Newton algorithm has an advantage of fast convergence speed and good performance. The narrowband filter in algorithm improves the SNC of measured signals to confirm the advantage. This paper improved the narrowband filters in Fx-Newton algorithm aiming to deal with the spectrum in the edge of divided frequency band through designing a cross-band filter bank which adds the number of filters and changes the distribution of narrowband filters in the algorithm. The improved algorithm is tested and the results show that it increases the convergence speed when the spectrum is in the edge of frequency band and improves the algorithm’s steady and reliability. It is meaningful to the application of Fx_Newton algorithm in active vibration control.

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Narrowband filter bank / Narrowband Fx_Newton / Active vibration control

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Chunyu Wang1 2 Lin He1,2 Yan Li1,2 Changgeng Shuai1,2 Zechao Hu1,2. An improved narrowband Fx-Newton algorithm and its application in active vibration control[J]. Journal of Vibration and Shock, 2017, 36(18): 170-176

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