Control-oriented modeling of a high-aspect-ratio flying wing with coupled flight dynamics  

作　　者：Cong NIU Xiutian YAN Boyi CHEN 

机构地区：[1]Department of Design,Manufacturing&Engineering Management,University of Strathclyde,Glasgow G11XQ,UK [2]College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Chinese Journal of Aeronautics》2023年第4期409-422,共14页中国航空学报（英文版）

基　　金：co-supported by the Natural Science Founda-tion of Jiangsu Province,China(No.BK20200437);the National Natural Science Foundation of China(No.62103187);the Fundamental Research Funds for the Cen-tral Universities,China(No.NT2022025).

摘　　要：The flight-structural dynamics of a high-aspect-ratio wing challenge the flight control design.This paper develops a reduced model of coupled dynamics with stability consideration.The structural dynamics are formulated with dihedrals,and the central loads drive the deformation.The control-oriented model with essential coupled dynamics is formulated.Modal sensitivity anal-ysis and input–output pairing are performed to identify the control structure.Besides,an example of flight control design is provided to discuss the necessity of considering structural dynamics in controller design.Analytical coupled flight dynamics provide a system-theoretic approach for sta-bility and facilitate model-based control techniques.Simulation results reveal the characteristics of flight-structural coupled dynamics and demonstrate that the influence of flexible modes should be considered in control design,especially in lateral dynamics.

关 键 词：Flexible couplings Flexible wings Flight control systems Flight dynamics Sensitivity analysis 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]