基于LQG/LTR的飞翼飞机阵风减缓系统研究  

Research on gust load alleviation for flying wing aircraft based on LQG / LTR

作　　者：彭程[1] 王新民[1] 张斯哲[1] 陈晓[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710129

出　　处：《飞行力学》2015年第2期130-133,139,共5页Flight Dynamics

摘　　要：根据我国《运输类飞机适航标准》的要求,采用有理谱逼近的方法建立了Von Karman大气紊流的数值仿真模型;详细推导了多变量系统鲁棒性的衡量方法,给出了开环系统奇异值曲线形状与闭环系统鲁棒性的关系;针对飞翼飞机多操纵面的特点,将控制分配技术与LQG/LTR控制器结合在一起,同时兼顾了对飞机过载和翼根弯矩的减缓。仿真结果表明,所设计的控制系统在对飞机过载减缓的同时,也对机翼的翼根弯矩进行了有效的减缓。In this paper,a numerical simulation model of the Von Karman atmospheric turbulence is established by the rational spectral approximation method according to the requirements of the 25 thChina Civil Aviation Regulations. The method for measuring the robustness of a multivariable system is derived in detail,and the relationship between the singular values shape of a open-loop system and the robustness of the closed-loop system is given. Since the characteristics of the multiple control surfaces for the flying wing aircraft,the control allocation technology and LQG / LTR controller are combined to realize the normal load and the wing bending moment alleviation. Simulation results show that the designed control system can alleviate the normal load as well as the wing bending moment.

关 键 词：飞翼飞机 LQG/LTR 控制分配 鲁棒性 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]