基于LQG/LTR方法的结构主动控制的研究  

ACTIVE STRUCTURAL CONTROL BASED ON LQG/LTR METHOD

作　　者：徐洋[1] 姜洪洲[1] 丛大成[1] 韩俊伟[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001

出　　处：《工程力学》2006年第7期130-135,共6页Engineering Mechanics

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。This paper introduces linear quadratic Gaussianfloop 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.

关 键 词：结构主动控制 AMD BENCHMARK LQG/LTR 不确定性 鲁棒性 

分 类 号：O327[理学—一般力学与力学基础] TU311.3[理学—力学]