收稿日期:2025-09-08
修回日期:2025-12-08
接受日期:2025-12-25
出版日期:2026-01-12
发布日期:2026-01-09
通讯作者:
寇家庆
E-mail:jqkou@nwpu.edu.cn
基金资助:
Jinyang TONG1, Jiaqing KOU2,3,4(
), Weiwei ZHANG2,3,4
Received:2025-09-08
Revised:2025-12-08
Accepted:2025-12-25
Online:2026-01-12
Published:2026-01-09
Contact:
Jiaqing KOU
E-mail:jqkou@nwpu.edu.cn
Supported by:摘要:
针对白箱气动力降阶模型的高效高精度构建,提出了一种基于非线性动力学稀疏识别(SINDy)的频域非定常气动力建模方法。该方法通过典型振幅频率下的飞行器简谐运动仿真数据,利用经典代数气动力模型架构设计候选函数库,并根据稀疏回归方法实现候选项的最优选择及参数辨识,从而自动构建稀疏结构的强可解释性气动力降阶模型。分别基于经典代数气动力模型与Theodorsen气动力建模理论,构建了全采样空间的统一模型(SINDyA)和变参数的局部气动力模型(SINDyB)。随后,以NACA64A010翼型和CHN-T1飞行器的跨声速俯仰运动这两类典型问题为研究对象,以升力和力矩系数为建模目标,验证了提出方法的有效性。结果表明:建立的模型仅需少数主导项就能兼顾气动力非线性与迟滞特性,其中SINDyB模型由于对系数进行局部插值,展现出更高的预测精度;由于力矩系数非线性更强,其预测难度显著高于升力系数;建立的模型在一定幅值和频率范围的激励下能准确预测气动力响应,但对于大幅高频工况,预测精度有所下降。研究验证了符号主义机器学习方法在构建高精度、可解释非定常气动力模型上的潜力,展现出此类模型的工程应用前景。
中图分类号:
童金阳, 寇家庆, 张伟伟. 飞行器非定常气动力稀疏识别建模方法[J]. 航空学报, 2026, 47(16): 132764.
Jinyang TONG, Jiaqing KOU, Weiwei ZHANG. Sparse identification modeling method for unsteady aerodynamics of aircraft[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(16): 132764.
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