面向控制的变构型空天飞行器建模及特性分析
Control-Oriented Modeling and Characteristic Analysis of Morphing Aerospace Vehicle
高泽鹏 1刘燕斌 1沈海东 1陈金宝 1彭寿勇2
作者信息
- 1. 南京航空航天大学航天学院,南京 211106;南京航空航天大学宇航空间机构全国重点实验室,南京 211106
- 2. 北京空天技术研究所,北京 100074;空天飞行技术全国重点实验室,北京 100074
- 折叠
摘要
针对空天飞行器爬升过程中,传统固定构型难以兼顾高低速气动性能的问题,提出了一种空天飞行器变构型调节策略.首先,提出了一种翼面伸缩的变构型方式,构建了含有表征飞行器构型变量的气动代理模型;其次,基于气动代理模型对飞行器气动和配平特性进行分析,根据气动特性制定构型变化策略,根据配平特性提出质心位置匹配设计;然后,根据构型变量和爬升飞行平衡的约束,以控制输入最小为目标,优化得到了合适的质心位置,为不同构型的质心位置设计提供参考;最后,仿真结果表明变构型空天飞行器在爬升飞行任务中起到分担舵面负载和减小油门的作用,增加了飞行过程的稳定性.
Abstract
Since the aerospace vehicle with the traditional fixed configuration cannot meet the requirements of the aerodynamic performance both at high and low speeds during the climbing section,a morphing adjustment strategy is proposed.Firstly,a morphing method with wing retraction is proposed,and an aerodynamic surrogate model with vehicle configuration variables is constructed.Secondly,the aerodynamic and trimming characteristics of the vehicle are analyzed based on the aerodynamic surrogate model.A morphing strategy is formulated based on the aerodynamic characteristics,and a center-of-mass position matching design is proposed based on the trimming characteristics.Thirdly,according to the constraints of the configuration variables and equilibrium state of climbing,the appropriate center-of-mass position is optimized with the objective of minimizing the control inputs,providing a reference for the design of the center-of-mass position of different configurations.Finally,the simulation results show that the morphing aerospace vehicle can share the load on the rudder surface and reduce the throttle during climbing missions,which increases the stability of the flight process.
关键词
空天飞行器/变构型/平衡状态/代理模型/优化设计Key words
aerospace vehicle/morphing/equilibrium state/surrogate model/optimal design引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据