高超声速飞行器的LPV鲁棒变增益控制  

Robust variable gain control for hypersonic vehicles based on LPV

作　　者：秦伟伟[1,2] 郑志强[1] 刘刚[2] 马建军[1] 李文强[3] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,湖南长沙410073 [2]第二炮兵工程学院自动控制系,陕西西安710025 [3]海军航空工程学院控制工程系,山东烟台264001

出　　处：《系统工程与电子技术》2011年第6期1327-1331,共5页Systems Engineering and Electronics

摘　　要：针对高超声速飞行器复杂的气动特性和严重参数不确定的纵向非线性模型,提出了一种基于线性变参数(linear parameter varying,LPV)的鲁棒变增益控制方法。首先,采用雅克比线性化方法将非线性系统LPV化,并结合张量积(tensor-product,T-P)模型转换方法进行LPV系统的多胞变换,得到LPV多胞系统;然后,采用H∞鲁棒控制和增益调度策略设计了鲁棒变增益控制器,保证高超声速飞行器的纵向稳定。该方法不仅避免了复杂的非线性控制器设计过程,而且能够有效地抑制模型参数变化。仿真结果验证了算法的有效性。For the complicated aerodynamics characteristic and severely parameters uncertainty of nonlinear longitudinal model of a hypersonic vehicle,a novel robust variable gain controller design methodology based on linear parameter varying（LPV） is developed.Firstly,the nonlinear model is transformed into a LPV form by Jacobian linearization of nonlinear plant.And then the polytopic decomposition of the LPV model is obtained by a tensor-product（T-P） model transformation method.So the robust variable gain controller is designed,combined with H∞ robust control and gain scheduling,to provide the longitudinal stability for the hypersonic vehicle.The proposed method can not only avoid the complex design process of nonlinear methods,but also restrain the effects of model parameters change in complicated fight conditions.The digital simulation results prove the availability of the proposed method.

关 键 词：高超声速飞行器 线性变参数 鲁棒变增益控制 H∞鲁棒控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]