变形翼无人机纵向动力学建模及飞行力学特性分析
Longitudinal Modeling and Analysis of Flight Dynamics of a Morphing Win UAV
邵朋院 1张治国 2屈高敏 1谭健 1张西1
作者信息
- 1. 西安航空学院 飞行器学院,陕西 西安 710077
- 2. 兰州飞行控制有限责任公司,甘肃 兰州 730070
- 折叠
摘要
文章建立了变形翼无人机(Morphing Wing UAV,MWUAV)的纵向动力学模型并在此基础上对其飞行力学特性进行了简要分析.首先,针对MWUAV的参数变化特点,建立纵向非线性参数变化(Nonlinear Parameter-Vayring,NPV)模型;其次,分析了参数变化对其静态特性的影响,包括升阻特性、转动惯量特性以及飞行包线的影响;最后,在建立模型和静态特性分析的基础上,在其飞行包线内选择典型分析点,进行了配平和线性化分析,得出了其配平量随参数变化的关系,并计算了其纵向长短周期模态特性.建模和分析结果可以为MWUAV的飞行状态设计以及控制器设计提供设计依据.
Abstract
In this paper,the longitudinal dynamics model of Morphing Wing UAV(MWUAV)is established and the flight dynamical characteristics are briefly analyzed on its basis.Firstly,a longitudinal nonlinear parameter-varying(NPV)model is established for the parameter variation characteristics of MWUAV;the effects of parameter variation on its static characteristics,including the lift-drag characteristics,the inertia characteristics,and the flight envelope,are analyzed;and on the basis of the established model and the analysis of the static characteristics,typical analysis points are selected and leveling and linearization are performed in the flight envelope of the MWUAV.On the basis of the established model and static characteristics analysis,the typical analysis points are selected,the leveling and lin-earization analysis are carried out,the relationship between the leveling amount and the parameter change is ob-tained,and the longitudinal long-and short-period modal characteristics are calculated.The modeling and analysis results can provide a design basis for the flight state design of the MWUAV and the controller design.
关键词
变形翼无人机/纵向动力学/飞行力学/飞行包线/动稳定性Key words
Morphing Wing UAV(MWUAV)/longitudinal dynamics/flight dynamics/flight envelope/dynamical sta-bility引用本文复制引用
基金项目
陕西省自然科学基础研究计划(2021JQ-845)
陕西省自然科学基础研究计划(2022JZ-37)
陕西省自然科学基础研究计划(2023-JC-QN-0031)
陕西省教育厅专项科研项目(21JK0701)
出版年
2024
NETL
NSTL
万方数据