基于LQG自校正器的机翼颤振主动抑制  

ACTIVE FLUTTER SUPPRESSION FOR THE WING BASED ON LQG SELF-TUNING CONTROLLER

作　　者：司益坡[1] 赵永辉[1] 

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016

出　　处：《动力学与控制学报》2012年第2期177-181,共5页Journal of Dynamics and Control

基　　金：国家自然科学基金资助项目(10972100)~~

摘　　要：研究了一种基于LQG自校正器的机翼颤振主动抑制设计方法.以带有后缘控制面的柔性机翼为研究对象,采用在线辨识来获取系统的时变参数,利用Kalman滤波器重构状态,通过求解离散时间代数Riccati方程得出机翼颤振主动控制律.在Simulink仿真平台上实现了上述方法,仿真结果表明,该控制器能够有效抑制机翼颤振的发生并具有一定的鲁棒性.This paper studied the design method of the LQG self-tuning controller to suppress the flutter of a wing. The flexible wing model with a single trailing-edge control surface was used in this study. The on-line iden- tification was used to obtain the time-varying parameters of the system, and the Kalman filter was used to estimate the states of the system. Then, the control law Was determined by solving a set of discrete-time algebraic Riccati equations. All the developed algorithms were implemented on the Simulink platform. The simulation results show that the developed controller is effective and robust.

关 键 词：LQG自校正 参数辨识 颤振主动抑制 

分 类 号：V215.34[航空宇航科学与技术—航空宇航推进理论与工程]