基于自适应观测器的超机动飞行鲁棒控制  

Robust Control for Super-maneuver Flight Based on Adaptive Observer

作　　者：李炳乾[1] 董文瀚[1] 解武杰[1] 王焯 LI Bingqian;DONG Wenhan;XIE Wujie;WANG Chao(Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi＇an 710038, China)

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《信息与控制》2018年第3期259-266,282,共9页Information and Control

基　　金：航空科学基金资助项目(20141396012)

摘　　要：针对超机动飞行的气动参数及外界扰动和建模误差等不确定性,设计了一种基于自适应观测器的鲁棒控制方法.通过在一般观测器中引入自适应律设计自适应干扰观测器来对外界扰动和建模误差进行观测和补偿,在快、慢回路中引入自适应律对不确定的气动参数进行在线估计,并选取李亚普诺夫函数对整个系统的稳定性进行分析,最后得到最终控制信号.超机动飞行数字仿真验证了该控制器能够有效抑制外界扰动和建模误差及气动参数等不确定性引起的扰动,增强了系统鲁棒性.In this study,to resolve the uncertainties associated with aerodynamic parameters,external disturbances,and model error,we design a robust control method for super-maneuver flight based on an adaptive observer.To observe and compensate for external disturbances and model error,we design the adaptive disturbance observer to apply the adaptive rule of a general observer. We adopt this adaptive rule in both fast and slow circuits to estimate the uncertainty of the aerodynamic parameters,and then use the Lyapunov function to analyze the stability of the whole system and obtain the final control signal. Our digital address verification of the super-maneuver flight proves that the controller can effectively resist interference caused by the uncertainties associated with the aerodynamic parameters,external disturbances,and model error,and thereby enhances the system robustness.

关 键 词：超机动飞行 自适应干扰观测器 抗干扰 鲁棒性 数字仿真 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]