智能结构模态控制实验研究

Experimental research on the modal control of intelligent structures

独立模态控制方法原理明确,实现简单,是智能控制的常用算法,根据一个3层框架结构智能控制实验,介绍了模态控制理论及实现方法,阐述了压电堆工作原理,根据压电堆受压性能好的特点设计了一种将拉力转化为压力的主动元件,给出了压电堆工作的检测方程和控制方程。通过对实验数据分析,可以看到,通过对结构进行主动控制,相应的模态位移和加速度得到了良好的抑制。

The independent modal space control method is simple and efficient,which is common used in vibration active control of intelligent structures.Based on the active control experiment of a three-story intelligent frame structure,the modal control theory and implement methods are introduced,and a kind of piezoelectric driving lever is designed,which can convert pulling force to pressure without flexural moments based on the well characteristics of the piezoelectric pile,then the piezoelectric detection equation and the control equation of the piezoelectric pile are obtained.Through analyzing the experimental data,it can be seen that,the corresponding modal displacement and acceleration of the structures are inhibited significantly with the active control method.