子空间辨识方法在主动约束层阻尼筒形结构建模中的应用

Application of subspace identification method in modeling of active constrained layer damping(ACLD) tubby structure

通过以系统输入、输出的随机响应采样值为依据的子空间辨识方法获取系统的模态参数和空间状态方程.在辨识过程中分别根据输入/输出信号和输出信号进行辨识,并利用实验测试数据验证模型的精度.辨识和实验结果比较表明,此方法能够得到多自由度系统较精确的状态空间模型,为振动控制器的设计提供了一个精确的控制模型.

Proposed a new method to get modal parameters and state space by subspace identification based on input and output data. The identification and experiment of a active constrained layer damping （ACLD） tubby structure was given to validate the proposed method. The results indicate that the method proposed can get an accurate state space model for controller design.