一类多频线谱激励下的主动隔振控制方法

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (23) : 128-131.

论文

一类多频线谱激励下的主动隔振控制方法

陈绍青，王永，魏璀璨，姚太克

作者信息 +

An Active Isolation Control Method to Suppress Vibration with Multiple Line Spectra

CHEN Shao-qing, WANG Yong, WEI Cui-can, YAO Tai-ke

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文章历史 +

摘要

研究了多频离散线谱激励下的主动隔振控制问题，提出了一种多通道解耦的自适应前馈控制方法；采用窄带带通滤波器对多频振动信号进行解耦，通过多个并行的自收敛变步长归一化的LMS自适应滤波器构成前馈控制器，驱动一个单自由度的作动器对多频线谱振动进行隔离；该方法无需次级通道模型信息，具有结构简单、鲁棒性强的优点。在某型磁悬浮隔振器的隔振系统上进行了多频主动隔振实验，实验结果验证了该方法的有效性。

Abstract

Active isolation control problem for the multi-frequency periodic excitations, which can be regarded as the combination of a set of the multiple harmonic components or some individual simple harmonic components, is studied, and a multi-channel decoupling adaptive feedforward algorithm is presented. The feedforward controller consists of multiple parallel self-converging variable step size normalized LMS adaptive filters, each of which is combined with bandpass filters respectively to uncouple the adaptive filters. Then with an SDOF actuator, multi-frequency periodic vibration is isolated. The algorithm do not require the identification of the secondary path, it is simple to implement and shows excellent robustness. The method is applied to an electromagnetic suspension vibration isolator, experimental results confirm the effectiveness of our proposed algorithm.

导出引用

陈绍青;王永;魏璀璨;姚太克 . 一类多频线谱激励下的主动隔振控制方法[J]. 振动与冲击, 2012, 31(23): 128-131

CHEN Shao-qing;WANG Yong;WEI Cui-can;YAO Tai-ke . An Active Isolation Control Method to Suppress Vibration with Multiple Line Spectra [J]. Journal of Vibration and Shock, 2012, 31(23): 128-131