基于LQG/LTR方法的结构主动控制的研究

详细信息

ACTIVE STRUCTURAL CONTROL BASED ON LQG/LTR METHOD

摘要: 将LQG/LTR(Linear Quadratic Gaussian/Loop Transfer Recovery)方法引入到结构控制领域中,针对AMD(Active Mass Damper)Benchmark模型进行主动控制策略的研究。首先建立AMD试验结构的LQG/LTR控制系统模型,并采用近似法确定模型不确定性,引入速度反馈来降低模态峰值以设计理想的目标回路;然后根据LQG/LTR理论设计了控制器,使得全状态LQR(linear quadratic regulator)调节器自然拥有的鲁棒特性在系统的输入端得到基本恢复。最后仿真结果证明了LQG/LTR控制器的有效性和鲁棒性。
- 结构主动控制 /
- AMDbenchmark /
- LQG/LTR /
- 不确定性 /
- 鲁棒性
Abstract: This paper introduces linear quadratic Gaussian/loop transfer recovery(LQG/LTR)method into structural control field and investigates active control strategy focusing on the active mass damper(AMD)benchmark model.Firstly,the control model based on LQG/LTR method is established and the model uncertainty is computed using an approximate method.Ideal loop is obtained through introducing velocity feedback.Then,controller is designed according to LQG/LTR control theory,which makes the robust property of linear quadratic regulator(LQR)recover at the input.The simulation results show that the control law is effective and robust.
- active structural control /
- AMD benchmark /
- LQG/LTR /
- uncertainty /
- robustness