周期振动隔离的自适应方法及其实验研究

针对多频、多点隔振问题,将跟踪滤波与带饱和抑制的LMS算法相结合,构造出基于分量控制的自适应隔振方法,将其用于多频率多通道控制,并进行实验验证。该方法是在通用的LMS算法的基础上,引入饱和抑制函数,根据控制饱和程度,优化控制器权系数更新过程,避免控制器的性能恶化。实验结果表明,自适应方法能够在多通道控制中很好地隔离周期振动,不仅具有良好的稳态控制效果,而且可以改善输出饱和情况下的控制性能。

Experimental Study on Adaptive Isolation of Periodical Vibration

For the isolation of multi-tonal vibration at multiple locations,an adaptive isolation method for vibration control was constructed by combing the tracking filtering technique with an anti-saturation LMS algorithm and was further verified with an experiment.The anti-saturation LMS algorithm can prevent any excessive adjustment of controller weights in the case of strong disturbance by introducing an anti-saturation scheme into the traditional LMS algorithm,which can optimize the updating process during the ...