智能结构重频系统反馈控制

提出了一种智能结构重频系统振动控制规律的设计方法·为了解决重频子空间相对应的特征向量选取的敏感性问题,通过摄动分析得到与重频子空间相对应特征向量的线性组合并利用闭环系统特征值极点配置的方法得到重频系统的振动控制规律;在所设计的反馈控制力作用下,讨论了结构参数改变后对系统的动态特性的影响;最后通过算例证明该方法的有效性

Feedback Control of Intelligent Structures with Repeated Frequencies

A design method for the vibration control law of intelligent structures with repeated frequencies was presented. The active control of the intelligent structures with repeated frequencies was studied. Firstly, the linear combination of eigenvectors corresponding to repeated frequencies was obtained by the perturbation method of systems with repeated frequencies; secondly, the vibration control law was designed on the basis of the system with repeated frequencies; finally, the vibration control law was applied to the original system and perturbed system, and the 1st order perturbations were discussed when the parameter of the system are modified in small. A numerical example was given to demonstrate the application of the presented method.