一种改进的窄带Fx_Newton算法及在振动主动控制中的应用

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (18) : 170-176.

论文

王春雨1,2，何琳1,2，李彦1,2，帅长庚1,2，胡泽超1,2

作者信息 +

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

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

Author information +

文章历史 +

摘要

窄带Fx_Newton算法应用在振动主动控制中具有收敛速度快、收敛效果好等优点，其中窄带滤波器在算法的信号通道和更新通道中能有效的提高待处理信号的信噪比，增强信号的相关性。针对多频带窄带算法在实际应用过程中不可避免出现的频带间过度问题，提出一种改进的窄带Fx_Newton算法，通过设计一组跨频带的窄带滤波器组，增加窄带滤波器的个数、改变窄带滤波器的分布，使得算法对于频带间的线谱控制能力得到提高。算法进行了仿真分析和试验对比，结果表明改进后的算法提高了线谱处于频带边缘时的收敛速度，提高了算法的稳定性和可靠性，对窄带Fx_Newton算法在振动主动控制中的应用具有重要意义。

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.

导出引用

王春雨1,2，何琳1,2，李彦1,2，帅长庚1,2，胡泽超1,2. 一种改进的窄带Fx_Newton算法及在振动主动控制中的应用[J]. 振动与冲击, 2017, 36(18): 170-176

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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