张杰,李国盛,文谦,王东辉,武泽平,张为华

• 1:国防科技大学空天科学学院

摘要(Abstract)：

为实现沉积影响下的喉栓式固体姿轨控发动机推力快速预示，提出一种融合各向异性和快速交叉验证的增广径向基近似建模方法。基于正交条件构建混沌多项式增广的径向基混合模型，并提出基于样本局部密度的各向异性方法，进一步提高混合模型精度。采用递归演化的拉丁超立方试验设计生成样本点，根据通用交叉验证误差求解过程中高阶矩阵快速求逆方法，降低模型训练的计算复杂度。与其他常用代理模型方法相比，本文提出的方法具有更好的精度和稳定性。将本文方法应用于固体姿轨控发动机推力快速预示，预示结果与仿真结果偏差控制在2.5%以内，计算耗时由小时级降低至秒级。

关键词(KeyWords)： 固体姿轨控发动机;增广径向基函数;各向异性;代理模型;交叉验证;推力预示

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（52005502）;; 国防科技大学科研计划（ZK19-11）

作者(Author): 张杰,李国盛,文谦,王东辉,武泽平,张为华

DOI: 10.13675/j.cnki.tjjs.2205062

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