摘要
以某型飞行器为例,运用气动参数建模分析的手段,建立典型空气动力学模型。将传统的模型辨识方法与现代计算机技术相结合,对气动力辨识输入参数进行了分析,采用迭代算法得出辨识参数,并对观测量和物理几何参数误差影响辨识精度进行了分析,选用某型飞行器现有试验测量数据作为输入量,进行气动参数辨识,将辨识得到的气动参数进行了仿真验证。利用辨识得到的气动参数仿真计算的弹道与试验结果吻合度较高,说明气动参数辨识可行。
Taking a certain aircraft as an example,a typical aerodynamic model is established by means of aerodynamic parameter modeling and analysis. Both the traditional model identification method and the modern computer technology are used to analyze the input parameters of aerodynamic identification,and the identification parameters are obtained by the iterative algorithm finally. The effects of the errors of observation and physical geometric parameters on the identification accuracy are analyzed. The existing test data of a certain aircraft are selected as the input to identify the aerodynamic parameters,and the identified aerodynamic parameters are simulated and verified. The results show that the ballistics calculated by simulation with the identified aerodynamic parameters are in good agreement with the experimental data,indicating that the identification of aerodynamic parameters is credible.
作者
梁明
LIANG Ming(Unit 91851,Chinese People’s Liberation Army,Huludao 125001,Liaoning,China)
出处
《上海航天（中英文）》
CSCD
2022年第5期140-146,共7页
Aerospace Shanghai（Chinese&English）
关键词
飞行器
动力学模型
气动参数辨识
弹道计算
仿真验证
certain aircraft
dynamics model
aerodynamic parameter identification
ballistic calculation
simulation verification
